Surging Outboard At High Rpms

But during wot or full speed properly trimmed, the starboard motor will surge or drop down after running for a few. Outboard won't run at high rpms? I have a 1993 yahama 85. compressor-surge-1. Honda bf225 outboard surging at mid/high rpms Addictionlures. It will continue this indefinitely. The rpms stay high,about 1000 rpms,as the transmission downshifts when coming to a stop. Basic Carb Adjusting Procedures/Guidelines - Timing can affect performance. just take off your intake tube and there is a hole on the bottom left. The F115, F90 and F75 feature Yamaha’s Variable Trolling RPM Switch (VTS®). It has been and outstanding vehicle with absolutely no issues whatsoever. I have changed the fuel filter and checked spark plugs and also fuel pick up tube. I have a 600 SRX mod that surges at high rpm's, it has high rpm pipes and cdi with race porting and 38mm flat slide carbs. 3 Litre V6 E-TEC engines of 200 to 250 HP appeared to rave reviews of their. If you haven't been hard at it for a bit, the pipe will cool and cause the engine to flutter/surge at or near WOT. Check the trigger as described above under “No fire or Intermittent on One or More Cylinders”. New pump, hoses, connectors. 2003 mercruiser 5. 4 merc 2001 mag mpi motor Surges to 1400 rpms then give it gas goes to 2000 rpms replaced iac,tpi,map new plugs wires distributor and rotor also replaced plenum gaskets checked for codes none found. When warm it's not as bad but it still does it whenever I'm driving and the surging only happens when I'm driving. At first it was very unnoticeable but this week it got worse between the RPM range of 2800 and 4200. Shop, read reviews, or ask questions about YAMAHA Yamalube 4M Outboard 4-Cycle SAE 10W-30 Engine Oil, 1 Quart at the official West Marine online store. Sorry 200,000 miles new plugs and wires cleaned all the sensors, coil pack does not surge when idling or does not surge in park at 1500 or above rpm's. Azure ® Digi-Motor ® 51⁄ 2 inch dia. Search Results FB Marine Group - Pompano Beach Pompano Beach, FL (954) 581-8355. We're not talking about a knocking engine or one that idles rough or stalls. A high variance in RPM on one cylinder indicates a problem usually in the trigger or CDM module. 5 inches, and the new Mercury Enertia props are offered in one-inch pitch increments (from 14 to 22) because its Verado outboards have a WOT rpm range of 5800 to 6400, or just 600 rpm. 1 mercruiser johnson 30 hp head torque pattern 2005 496 mercruiser no start troubleshooting where is the oil injection fail switch on a 2002 mercury 3. * I did this, and it went away. In gear, with my foot on the brake, the idle would surge from 600-900, maybe a 2 second cycle. While on the water it was taking a long time to get my boat up on a plane. The DVA voltage should show a smooth climb in voltage and remain high through the RPM range. When warm it's not as bad but it still does it whenever I'm driving and the surging only happens when I'm driving. Honestly, It was not really too dirty as it was the 3rd time cleaning it , the first 2 were really thorough with carb cleaner and blown shop air. If you don’t, keep a close watch on your temperature gauge and listen for a warning horn. Available on the F70, F60 and F50, this allows anglers to adjust trolling speeds in 50-RPM increments. Some Johnson Outboard decals are OEM, we pursue to meet OEM specifications and also we have our original designs. Elmo owen Joined: Mar 4, 2012. When this happened I backed off the throttle and got it back up to 4500 rpms where it ran smooth again. • RPM surge on coast • Overheated fluid Replace with Sonnax Part No. Shop, read reviews, or ask questions about YAMAHA Yamalube 4M Outboard 4-Cycle SAE 10W-30 Engine Oil, 1 Quart at the official West Marine online store. At first it was very unnoticeable but this week it got worse between the RPM range of 2800 and 4200. Outboardparts. Showcasing 12v high available for purchase now online. The engine runs fine but surges when the RPM range reaches 4500-5000 RPMs. A serious student of the Honda outboard, Jacoby knew exactly what I was talking about when I mentioned a bogging BF90, and had some advice for BF90 owners: Get the revs up: "The BF90 needs to be propped to run 6000 rpm at wide-open throttle, and that's with a full load of fuel, gear and passengers," said Jacoby. However while trolling in the lowest rpm range it has a random surging issues. Skip the runaround and get the. My problem is getting worst daily. I have a two 2016 Yamaha F150's with 20 hours on them. It has been and outstanding vehicle with absolutely no issues whatsoever. The engine utilized a gear ratio that measured 2-to-1. It has all new fuel related parts. With my inboards, I always cruised between 3000-3400 rpm, but had heard of guys in the 4000 range, I would rather cruise on the low side to save fuel and wear and tear on the engine. SIM Yamaha is a USA Yamaha outboard motor and outboard motor parts dealer. MARS SERIES 116 The largest selection of motors, components, and accessories for the HVAC/R Industry MNP –1 ® The Azure ® Digi-Motor® from MARS is a high efficiency variable speed direct drive blower motor for a multitude of applications. I am having a problem with my 1999 Mercury Optimax 225. 75" and features a pitch range of 28" to 35" (even and odd) sizes and left- and right-hand rotation for twin engine applications. Compare Honda Marine High Power Outboards to help find the right model for your boat. Idle high 2003 mercruiser 7. Lowest Prices and Delaware Has No Sales Tax. 3 not reaching wot rpm; 2005 mercruiser 5. Located at Gibsons Marina on Sydney’s Pittwater, our experienced team delivers quality service and expertise at highly competitive prices. close down vent on fuel tank,make sure gas cap is tight. I was out this weekend and when I was on plane running around 4500 rpm everything was great. With up to 100 kW the high-RPM version easily powers planing boats, while the low-RPM version is ideal for large yachts and other displacement vessels. Re: Jetta 1. 2K rpms stops. While idling, it normally sits at around 700 RPM's. Johnson Evinrude Outboard Motor Service Manuals for only $4. You may have to register before you can post: click the register link above to proceed. Check the trigger as described above under “No fire or Intermittent on One or More Cylinders”. Sonnysfishingcenter Started 3 hours ago. After extensive research on many of the forums online, I've been able to solve my high idle issue. AS detailed in previous editions, Fisho has embarked on an ambitious testing schedule which will see a range of 200hp outboards. WOT RPM's too high I just bought my first boat last week, a 1993 Diablo 180 with the 4. Wasn't until climbing the hills in West Virginia that it would miss some at high RPM in high gear, showing very low fuel pressure. It even allows for sub-idle trolling. Available on the F70, F60 and F50, this allows anglers to adjust trolling speeds in 50-RPM increments. If set at 4200 RPM, it will drop to 4000, then surge to 4400 and continue to surge between 4000 and 4400. A A sticky or partially clogged fuel injector could well be the cause for this hesitation, or "chuggle," as it's often called. by Kyle McFadden. Not throttle cable or fuel lines. IF it quits surging then you have found the problem. Your typical car motor likely sees very little use over 3000 RPM. Outboard Motors For Sale. It seems to happen primarily when traveling between 45-55mph. Started fine , Idled fine but really low rpms, throttled up and run fine but seemed low on rpms also at full speed. After a long trip in Germany this summer, i got in a debate with my friends about how its really "bad" to drive so fast that you keep your car at a high RPM for a long time, or that you run your RPMS high when accelerating. This allows for precision adjustment of trolling speeds in 50-RPM increments, from 650 to 900 RPM for the 115 hp, and 550 to 1000 RPM for the 90 and 75 hp. This only happens in gear. Changing out a VRO pump is easy depending on where and how it's mounted. The largest of the family, the bad boys, are for engines with free flowing exhaust systems and special high RPM jet or outdrives. It has all new fuel related parts. Im a proud owner of a Evinrude etec 115H. When I did, the range of rpm it would surge would lower each time I gave it a good tap with a socket wrench. it doesnt do it in first gear. They also offer incredible trolling flexibility with Yamaha's exclusive Variable Trolling RPM Switch. At first it was very unnoticeable but this week it got worse between the RPM range of 2800 and 4200. 5 inches, and the new Mercury Enertia props are offered in one-inch pitch increments (from 14 to 22) because its Verado outboards have a WOT rpm range of 5800 to 6400, or just 600 rpm. I also have the same problem when. Severe cases require professional cleaning equipment. Almost no power. The engines RPMs seem to bounce back and forth 50-100 rpm. Took off and and ran great at WOT for about 2-300 yards and sputtered then for the remainder of the day sputtered off and on dropping rpms when doing so. I thought I'd throw this one out to see if anyone has experienced this problem. NEW- YAMAHA 50 HP 4-STROKE OUTBOARD MOTOR. Once RPM increases a bit, however, you should see it. These compact outboard motors take you to the fun, the fish, or whatever floats your boat - quickly and reliably. Watch for overheating--pointing a big shop fan at your engine will help it from getting too hot during the fast idling. Pulling max rpm in the lower gears netted 0-60 in eight seconds or less and ran a standing quarter-mile of under 16 seconds at 90-plus mph. Each increment. • Outboard replaceable surge protector • Adjustable speeds (with optional MARS No. Mercury / Mariner Outboard Motor Section. What makes an outboard boat motor surge and not run to its full power? Unanswered Questions. Fuel/surging problem; any help would be appreciated. 6: throttle cables sticking, (up to 3 cables must be set loose, throttle, cruise, and A/T kick down cables. High all, I have searched the forum and haven't really found an answer. Check out Honda's full line of dependable 4-stroke outboard motors, from mid-range, and high power motors, from 25 to 250 hp at Great Outboard in Pompano Beach, FL. Some Johnson Outboard decals are OEM, we pursue to meet OEM specifications and also we have our original designs. If it does, a fuel pump with more capacity may be required. Surging at high RPMs Post by Luke470 » Tue May 31, 2016 3:08 pm When I have the engine speed control all the way forward (high rpms) the engine surges like it is getting starved of fuel. At Cobra Marine we specialise in service and repairs to all outboards and trailers as well as supplying a wide range of boat parts and accessories. 7 bravo 2 overheating at high rpms or under load; 2005 mercruiser 4. 0 liter mercruiser running rough at high rpm; 3. Not to mention when you're backing up and if you're not covering the brake you could basically run over somebody with the jumping around of the RPMs and the surging. Modern outboard engines have come a long way, whether you’re talking about the now-common four-stroke or modern DFI motors. Discover the range here. Got back with tohatsu yesterday and they are stumped. Sometimes it's "valve float", that's where the valve springs aren't strong enough to return the valves to their closed. 1987 Ford F-150 Custom 5. 5 D21 with the Z24i engine. It started when using cruise control so I stopped using that all together but it still surges when riding on flat land with my foot on the gas at a constant speed of 60+ mph. by lloyd (208 Idora Ave, vallejo, Ca. If you back out of it and do a little high load, on/off throttle riding, it will heat up and the problem goes away. 2L V6 F250NCA Outboard Motor Perfect for offshore dual or center consoles, walkarounds, runabouts and pontoons, the 4. I have a Suzuki 115 boat motor that surges when rpm's are above 3000 rpm. 2) Turn up your idle a few hundred RPM using the throttle stop screw (basically you want a fast idle). Car is now running again. And today the Evinrude G2 outboards – even though they are 2-stroke – can go head-to head with most 4-stroke engines on overall fuel economy. Visit MacMulkin Chevrolet for great deals on certified trucks. 6: throttle cables sticking, (up to 3 cables must be set loose, throttle, cruise, and A/T kick down cables. To determine if it's the converter or not drive it at 45 MPH and when it starts surging press the brake pedal down about 1 or 2 inches. Switched out the. ability to breathe at high rpm, thus improving high speed power output. Differences include solid engine mounts, choice of gearcase, optional 20’ or 15’ mid and internals that can handle high RPM running. I have noticed that when I drive it in town and take my foot off the gas it takes forever to slow down. 5 Sportwin I picked up recently. Sorry 200,000 miles new plugs and wires cleaned all the sensors, coil pack does not surge when idling or does not surge in park at 1500 or above rpm's. I'm running a freshly rebuilt LS1 with a T-56; all nicely housed in a 2006 Lexus IS250 ( Link ). A very typical one is my Eagle Talon, that had a vacuum leak and at idle the revs would vary between 500 and 1500 rpm as the ECU was trying to control the idle, but didn't know about the additional air. I know when I did my first 100 hour maintenance, I skipped that part about lubricating the splines driveshaft because I thought I had to drop the lower unit to do that. Re: Briggs 15. Fuel/surging problem; any help would be appreciated. This results in greater engine control and stable operation at low rpm. We're talking about engines that start easily and accelerate smoothly, but then, after a few minutes at a steady speed, either surge in speed or misfire, causing the car to "buck. Re: Surging/Idle Trouble with 4-Stroke Outboard Originally Posted by atmartin I've had the motor for about a year and it's mostly used for maneuvering around launching ramps and mooring fields, plus it gets laid down on its side for long periods (the correct side at least). 3ltr - Cutting Out at High Speed If this is your first visit, be sure to check out the FAQ by clicking the link above. My turn to ask for help. Running outboards WOT Looking at the RPMs they pull versus a skidoo or roadbike, they certainly aren't near as high, although they are under constant load. 1 mercruiser johnson 30 hp head torque pattern 2005 496 mercruiser no start troubleshooting where is the oil injection fail switch on a 2002 mercury 3. It has all new fuel related parts. * I told the dealer this, and he said I might have an issue on the low pressure side, and suggested that when the outboard begins to surge, try squeezing the bulb to see if it goes away. This works in concert with the Precision Multi-Point. With most fuel pumps the minimum fuel pressure is encountered at high rpm and WOT. 7L has been having RPM surges when at cruising speed (roughly 60+ mph). Not throttle cable or fuel lines. Each 35hp engine repair manual covers every aspect of repair. High Speed Miss: Connect an inductive Tachometer to all cylinders and try to isolate the problem. If you don't, keep a close watch on your temperature gauge and listen for a warning horn. Perform a high-speed shutdown and read the spark plugs. I have a 2004 Hyundai Sonata with about 85,000 miles. Switched out the. Only thing I can figure is there must have been some dirt that stuck and unstuck by itself. 115 HP (2012) Mercury 4 Stroke with Black Max 13-3/4 x 15P. However, the high idle remains. Best Answer: There is a thing known as ethanol poisoning. I changed the plugs and still occasionally drops rpm once over 4500 rpm. Enjoy quick acceleration to go with exhilarating speed. All you need to do is call or e-mail us, and we will come to you,email us for details)remove your engine, bring it back to the shop, overhaul it, return it to you, and mount it on your boat. New Boat Motors at Discount Prices. Difficulty Level - 5. Checked everything over and over and finally ended up at a Mercury shop. It seems to happen primarily when traveling between 45-55mph. 147741-16K Requires F-147741-TL16 & VB-FIX 9. Re: Help - 2-stroke carb surging high rpms. The service manual download for the above listed Mercury. 90-450 psi of conventional direct injection. you will feel some little dips. The engine seem like it running on single cyclinder. " The problem; I started noticing it at red lights or stop signs. Tohatsu outboards were originally developed for commercial Japanese fishermen who needed a motor that could run for days on end, no matter what the weather. you can use the bulb to pressurize system. There was no compression and I had to get a new engine. Here's how to choose the right kind of package boat power. If it does, a fuel pump with more capacity may be required. compressor-surge-1. When I did, the range of rpm it would surge would lower each time I gave it a good tap with a socket wrench. This INSTANT REPAIR MANUAL DOWNLOAD for the Mariner outboard engines were designed primarily for factory service Mariner outboard technicians in a properly equipped shop. We have tried everything we know of and the next step is to look for a decent Mercury outboard mechanic in the San Diego area, preferably East County. 3 hp outboard mercury 140 hp outboard idle to high 1970 yamaha. I thought I'd throw this one out to see if anyone has experienced this problem. Not to mention when you're backing up and if you're not covering the brake you could basically run over somebody with the jumping around of the RPMs and the surging. Guys maybe you can give me a little help before I take this motor into the shop. MERCRUISER HORN WARNING SYSTEMS Page 4 / 10 90-898301003 JUNE 2007 1995-Current 5. At what RPM on each of the Evinrude Outboard Range does the HARD limiter activate. 1 mercruiser johnson 30 hp head torque pattern 2005 496 mercruiser no start troubleshooting where is the oil injection fail switch on a 2002 mercury 3. The rpms stay high,about 1000 rpms,as the transmission downshifts when coming to a stop. They think the boat is two big for the engine and that is why the rpms are running 1200 rpm under nominal. Honda claims no other outboard engine can provide as much current at such low engine rpm. 3 Mercruiser Alpha One Outdrive Thunderbolt IV ignition. Hi, I am having a wierd problem with a high RPM surge on Nitrous. This is a replaceable device that is much less expensive to replace than replacing the entire motor in the event of a power surge. If the numbers are high, it tells you the engine is running lean and the injectors need cleaning. 6 and metal fuel rails. i have a Chris craft amerosport 230 it had a 305 in it i installed a new 350 mercruiser with an alpha 1 drive. What does the "outboard" in outboard motor mean?. And if the truckhasnt seen an high egt yet then it won't surge. Mercury Outboard Motor electronic high performance CDI applications. At what RPM on each of the Evinrude Outboard Range does the HARD limiter activate. furthermore, even at highway speeds this variable, rhythmic idle persists when i'm not jamming the accelerator. Tighten the cable clamp screw. If the load is too light, the rpm is too high, and the motor will self-destruct from the inertia of the piston as it goes up and down. It appears to me to be a fuel issue. I went out to tear into it today. Once RPM increases a bit, however, you should see it. Search Results FB Marine Group - Pompano Beach Pompano Beach, FL (954) 581-8355. 3) 825 RPM CW (LE) 4) 825 RPM CCW (LE) Unlike other ECM motors, an outboard surge protector is included with ®the Azure wiring harness. I have a fourstroke 115 hp that the rpm surges only between 1000 and 1200. We recently have been having problems with it as it has been throttling in RPM up and down at high settings, and if you attempt to quickly change speeds from a lower setting, it will stall and die. what causes poor idle outboard; what causes surge at idle Johnson; what does an idle mixture screw do on an outboard; what is an idle stop screw outboard; what is proper adjustment for idle screw on 40 hp Johnson outboard; what is the correct idleing rpm for 1996 40hp Johnson; what is the normal rpm speed for Johnson 75 hp at idle. The service manual downloads for the above listed Yamaha, Mercury, MerCrusier Mariner, Suzuki & Johnson/Evenrude models describes the service procedures for the complete inboard, outboard, jet drive or stern drive. Check it out only at www. 4 mph at 5790 rpm. Mercury Download 2000 2001 Service Manual 75 90 Hp 4 Stroke 75hp 90hp Outboard DOWNLOAD HERE This 2000-2001 Mercury/Mariner Outboard Marine Service Manual/Repair Manual Covers The Following Models: 75/90 HP (75HP 90HP) 4-Stroke. Outboard surges at full throttle It ended up being the fuel pump was getting worn and not being able to keep up with the engine at high rpm's. WOT RPM's too high I just bought my first boat last week, a 1993 Diablo 180 with the 4. 7 mpi wont turn rpms; 3. What makes an outboard boat motor surge and not run to its full power? Unanswered Questions. It's not just king tides bringing high water levels to East Coast beaches, rivers and inlets. Yamaha Marine Jet Drive F60. The difference in power to plane, acceleration, top-end speed, and fuel economy was nothing short of amazing according to Yamaha. Mercury ProKicker outboard motors deliver superior torque for greater acceleration control. This section written by Bob O’Neill and Bob Lincoln. My Forester surges whenever the clutch is pushed in and you are coasting. 0 psi; if the vehicle has an adjustable fuel-pressure regulator, set it to 4. Laguna Boating Centre is a family owned business located in Noosaville on the Sunshine Coast. New 2020 Toyota Avalon Limited 4D Sedan for sale - only $41,459. Kind of seemed what other posts have described as the brakes being applied quickly on and off. Re: F225 surges and misses over 4000 rpm because the yamaha software doesnt have that function. Trying to figure out what's wrong with my 1991 Evinrude 48hp outboard. The Yamaha F115 Four-Stroke Outboard Engine. I had a similar problem with my 2002 90-hp Mercury 2 stroke a few years ago. What does the "outboard" in outboard motor mean?. 1 mercruiser johnson 30 hp head torque pattern 2005 496 mercruiser no start troubleshooting where is the oil injection fail switch on a 2002 mercury 3. The Tinnie Shack is a Marine Business like no other. Visit MacMulkin Chevrolet for great deals on certified trucks. I have '63 Gale 15 HP 15D15B outboard that is surging at 3/4 throttle to WOT. I have a 93 yamaha 130 outboard engine. My Etec 150 starting surging last week. RPM's rapidly fluctuate up and down even when on a flat road under constant throttle, speed and load. Reasons for a Rough Idle or High RPM. just take off your intake tube and there is a hole on the bottom left. Figure 1 is a typical turbo compressor map. Whether it’s a new engine, repower or maintenance, we have you covered as Suzuki Marine’s fully authorised sales and service dealer for the Cairns region. It's balls out. Johnson / Evinrude Outboard High Performance Stator; *5800 RPM Limit; Ignition Coil Wire Lengths Orange/Blue 15 273-3415RS PopScreen - Video Search, Bookmarking and Discovery Engine Johnson / Evinrude Outboard High Performance Stator; *5800 RPM Limit; Ignition Coil Wire Lengths Orange/Blue 15 273 3415RS. Guys maybe you can give me a little help before I take this motor into the shop. function, limiting RPM to 2500 RPM in case of engine over-heating. Idle is eratic sometimes idles at around 1400 rpms steady other times it surges from around 600 up to 1400 and back to 600 and sometimes will stall. • Outboard replaceable surge protector • Adjustable speeds (with optional MARS No. Your typical car motor likely sees very little use over 3000 RPM. Serious surging RPM issues when i can get it started--which is about every 5th attempt. If you look at the motor it is shuttering and drops RPM and suddenly gains them. high rpm jerking/surging if i hold my car at 4500+ rpm steady the car will jerk and shutter. on-line searching has currently gone a protracted means; it's modified the way customers and entrepreneurs do business these days. Check out Honda's full line of dependable 4-stroke outboard motors, from mid-range, and high power motors, from 25 to 250 hp at Pinnacle Marine Service, LLC in Salt Lake City, UT. We're not talking about a knocking engine or one that idles rough or stalls. This is a major plus for anglers. Yamaha F25 Outboard Engine Test and Review The new Yamaha F25 outboard engine is a serious improvement over last year’s model, and will be of interest to anyone looking for a powerful portable outboard for their fishing skiff, duck boat, or crabbing boat. Suzuki was the first manufacturer to tighten that pitch spread, to 1. The difference in power to plane, acceleration, top-end speed, and fuel economy was nothing short of amazing according to Yamaha. It will sometimes run in idle but low (600 RPM) and very rough, for maybe a minute; then will sputter and die when I try to fast idle the RPM up. You may have to register before you can post: click the register link above to proceed. 560 Lift, 216° in/220° ex duration at. 150 HP (2013) Mercury Fourstroke with 15x15P SS Enertia (Thanks Todd!) - 41 MPH at 5800 RPM, light load. what usually happens is untrained techs or techs that have completed outboard systems get intimidated by all the wires and shiney parts and leap to conclusions. Also, the RPMs rev very high from about 2 to sometimes 5,000 (all with no acceleration). Idle is eratic sometimes idles at around 1400 rpms steady other times it surges from around 600 up to 1400 and back to 600 and sometimes will stall. Power Pack CD3 AL for Johnson Evinrude Outboards Fits 1996-2001 65 HP 3 Cylinder engines. SIM Yamaha also sells Yamaha outboards at discounted prices. When I got my used 98, it had an idle issue similar to what you described. 2 Vintage Evinrude Outboard Motors And 1 Johnson Motor 15 Hp And 3 Hp. Torqeedo’s superior electric motors are suitable for powerful motorboats, large sailing yachts and commercial vessels such as ferries. Sonnysfishingcenter Started 3 hours ago. The DVA voltage should show a smooth climb in voltage and remain high through the RPM range. After cutting a very small section, and stopping and starting the mower a few times to test things out, it went back to surging like it was before and the engine still seems to be running "rough", with a slight almost metallic noise. I use my motor to troll with and have been experiencing a surging problem in low rpms. Re: How to Set Up an Outboard for Optimal Performa Running 06' gheenoe classic with 06'yammy 25 2-stroke shortshaft tiller. The ideal engine to propel heavy loads such as: sailing boats, utility boats or small. The rpms stayed low while trying to get on a plane, between 1800 and 2200, once on a plane the boat would open up and run great at around 5500rpm. I have plenty of gas, so it's not me running on fumes. Best Answer: There is a thing known as ethanol poisoning. I have noticed that when I drive it in town and take my foot off the gas it takes forever to slow down. 4l no spark engine floods at idle RPM instructions for 1994 mercury 115hp fuel pump problems starting 8. I need help diagnosing a strange problem with my 2002 GTX NA 4 TEC, 200 hours. Fuel pressure should not drop below 2. Mercruiser V6 4. by Kyle McFadden. Whats causing this?. TT (Mk1) Discussion - Turbo surging at high rpm - Hi everyone, i just bought a 2000 tt with 200,000 kms on it and the check engine light is on and the turbo is surging under load. High RPM / Low speed gain / Engine-Shifting issues? 43 Answers. The carb replacement was done after it started surging. Check it out only at www. Fuel/surging problem; any help would be appreciated. This ignition system produces very high voltages and due care and caution must be practiced in working with it. chevyhiperformance. I'm running a freshly rebuilt LS1 with a T-56; all nicely housed in a 2006 Lexus IS250 ( Link ). But when the choke is in the run position it idles high and then bogs down surges and backfires when reved. This results in greater engine control and stable operation at low rpm. So you don't have to baby them along at lower rpm for the first few hours running time. The low-lift, short duration cam lobes (shown in red) provide strong torque at low rpm. I don't have a tach so I can't tell for sure. I have a Mercury 150hp outboard and it has no power when i get a group on my boat but with 2 or 3 its great? My mercury 1500 (150hp) outboard 1977 model runs great with 2 or 3 people on my boat but when i get 5 or six people on there the motor wont rev over 2000 rpms and it bogs down really bad even with throttle wide open but the people get. 39 MPH at 5700 RPM, heavy load. txt) or read online for free. com Multi-Port Precision Electronic Fuel Injection, on the F50 - F90, uses four individual fuel injectors to deliver optimal fuel/air mix to each cylinder - for easy starting, smooth acceleration, and maximum fuel economy. For the past few weeks, when trying to accelerate, I press down steady on the gas pedal, and sometimes the car does not accelerate. This enables precise control over the intake of air, which is smoothly routed into each combustion chamber through the surge tanks and the long intake manifold for greater power. I have no service history. It seemed to be running at low RPM and was bogging down very very quickly. Check out Honda's full line of dependable 4-stroke outboard motors, from mid-range, and high power motors, from 25 to 250 hp at The Boat Guy in Bourne, MA. Perform a high-speed shutdown and read the spark plugs. VTEC varies the lift and duration of the intake valves to deliver optimal performance at both low and high rpm, resulting in peak performance at all speeds. When an outboard motor runs at speed but cannot hold an idle, it usually indicates a problem with the carburetor. Visit MacMulkin Chevrolet for great deals on certified trucks. * I told the dealer this, and he said I might have an issue on the low pressure side, and suggested that when the outboard begins to surge, try squeezing the bulb to see if it goes away. The surging is bad when the engine is cold and not at optimum running temperature. Fuel/surging problem; any help would be appreciated. Mercury / Mariner Outboard Motor Section. 3L CPI, Auto) had a surging (jolting,dunno).