Kawasaki engine surges at full throttle

Have a JD X540 w/Kawasaki FD731V engine. Engine idles but when warm at full power it surges and cuts out - can partially control surge with choke. Have had carb ultrasonically cleaned - didn't help. H … read more

14,778. Apr 23, 2021 / Mower runs at low RPM at full throttle. #7. Could be that the throttle cable is not adjusted properly. Try this, move throttle control to full speed, and then loosen the screw holding the cable in place. With the cable loose push it forward as far as possible and then tighten the screw.Kawasaki 921 V lawn mower engine surges and backfires at low speed runs fine when you turn blades on ... I noticed several weeks ago that it wanted to surge and not run at full throttle so the first thing I thought is that I had got some ba ... The mower has started surging when the throttle is at low speed. When I increase the RPMs the surge ...it is very minor! I almost thought I was imagining it. But after a while I noticed it more. It was always at steady throttle and the throttle was only open enough to maintain my speed. Doing 40km/h or 60 km/h or 110km/h. The gear I was in didn't seem to matter either. I had a few faster runs doing 140+ km/h and didn't notice it.12486 posts · Joined 2004. #12 · Oct 25, 2012. Once the throttle bodies are fully open (full acceleration), and the engine RPM's get high, then the injectors must deliver a full flow of fuel. If the fuel pump is getting weak, then the injectors can't deliver enough fuel to keep the engine running properly.If your engine is surging or running unevenly, chances are that something is wrong. Some engines will seem to surge when there's no load. because when the drive, auger (if a snow blower) or blade (if a mower) are disengaged, the governor will keep it from reaching full throttle.. If the engine still surges while there's a load on it (or it dies out completely), here are some quick tips to ...Surging is always caused by an air : fuel ratio that is too lean to maintain a constant speed. Only 2 ways this can happen 1) carb not supplying enough fuel 2) air entering the engine after the carb venturi tube has added the fuel. To test for the latter, start the engine, hold the governor arm at whatever place to obtain the fastest smooth speed.2. Engine Misfires or Backfires. A common challenge many have with the Kawasaki Bayou 300 is engine misfiring. There are four possible causes for this malady: An improperly timed fuel pump. A poorly tuned carburetor. Inaccurate valve timing. Unusually low idle screw setting.

Kawasaki FD750D Surging/Fuel problems. Hello everyone, new member here. I have an old scag turf tiger that had a carb on it and when it came time for a new motor I bought the fuel injected version of the same engine and retro fitted it. which was as simple as a new wiring harness, Now I cant get it to run right and my mech seems to be simply ...Jul 14, 2013 · I have an LX277, air cooled, Kawasaki FH500V, 494cc, 17HP VTwin OHV. This mower runs a half throttle, but surges when trying to run full throttle. I've changed the fuel lines, fuel pump, solenoid, and cleaned the carb during the past months with no lasting fix. I'm confident this is a fuel/air issue due to the fact that choking the mower will ... GX345 Surging Engine Problems. I have a JD 2005 GX345 garden tractor with a 20hp liquid cooled Kawasaki engine. I am having trouble with the engine surging after it warms up very badly. I have done the following things to rectify the problem with no success. Couple of hints: When I run the PTO (blades) it runs like a top.Feb 19, 2018 · Feb 18, 2018 / 22hp V-twin STILL surging. Help! #2. that type of surge is normally associated with the idle circuit in the carb. Even though the engine runs at full throttle, you are still running on the idle circuit unless the engine is under load. those passages are normally in the area at or in front of the throttle butterfly if you are ... Have a JD X540 w/Kawasaki FD731V engine. Engine idles but when warm at full power it surges and cuts out - can partially control surge with choke. Have had carb ultrasonically cleaned - didn't help. H … read more5 posts · Joined 2010. #1 · Apr 4, 2013. I have a 2007 exmark turf tracer hp with a 17 hp kawasaki motor. Has maybe 400 hours. Engine has been surging from idle to nearly full throttle. Doesn't surge at wot but engine doesn't sound smooth. I have done research and tried all the secrets and tricks on here. I've had the carburetor off 8 times ...Kawasaki 921 V lawn mower engine surges and backfires at low speed runs fine when you turn blades on ... I noticed several weeks ago that it wanted to surge and not run at full throttle so the first thing I thought is that I had got some ba ... The mower has started surging when the throttle is at low speed. When I increase the RPMs the surge ...114 posts · Joined 2014. #7 · May 5, 2017. Piston Slapper, I have a similar issue with my Kawasaki FH541V - it starts quickly but will surge heavily at idle or full throttle with no load or surge slightly with blades engaged if given anything less than 3/4 choke. I've thoroughly cleaned the carburetor twice, new fuel filter, air filter, etc.

I'm out of ideas! It just doesn't make sense. I start it, it idles ok, I can apply throttle and rev the engine just fine for the first couple of minutes, and then, after that, it wants to die if I touch the throttle. It seems to be consistent; whenever the engine is cold, it runs fine for a couple of minutes.1) replace the fuel solenoid on the carb with a short bolt, thus taking the solenoid & solenoid wiring out of the question. 2) rig up an external fuel tank and the minute it plays up switch to the alternative tank. problem goes away = obstruction to the fuel supply. 3) check that the fuel solenoid is working.Jun 8, 2020 / Kawasaki FH601V surging / loping at high rpm. #1. I bought a well cared for JD 717a mini z Trak 48" mower last year. It's old but it is in fantastic shape. The motor is a 19hp Kawasaki FH601V It idles fantastic, and starts like a dream, but at full throttle and especially under load it lopes and seems to struggle to maintain ...The motor surges when at idle, revs up, revs down, up, down. Sometimes dies if the throttle is at it's lowest, but will continue to run any other situation. Engage the PTO, everything runs like a dream. Took it to the shop, they changed out the coils ($200), about a week later, same thing. Took it back, they ran it through test after test and ...

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9. Messages. 63. Aug 2, 2019 / Gravely losing power under load. #4. Oh and see if your carb has an adjustment knob. Some do some dont. Also make sure there isnt debris in gas tank limiting the amount of fuel being pulled through. Make sure there is no vacuum leak on engine side of carb.John D Kawasaki engine 17 hp surges. anybody have any thoughts. Thanks a lot, Deeremoonkid. My F525 (17 HP Kawasaki) does that at idle after I fuel it. I fuel it & drive it about 100' to the shed, 1/2 throttle or less. The rest of the time, it runs fine! ~~ grnspot110. Thanks, appreciate it. could be as simple as the vent in the fuel tank cap ...STEP 1. Verify that the throttle control is adjusted properly as follows: - Move the throttle control to the Choke position. - In the Choke position the arm attached to the throttle cable at the engine should bottom out at the arrow (1). Choke. Full Throttle Idle Throttle Engine Off (BBC version) 2 1.Jun 6, 2013 · kbeechler. 11 posts · Joined 2022. #9 · Nov 8, 2022. I’m reading about the Kawasaki FJ180V surge, I have a brand new machine, straight out the box, it too surges during load, it idles beautifully.. it will really surge at full throttle, but if I back it off to about 3/4, it surges very little.. Understanding the dangers of overheating and regularly maintaining your engine can help prevent this issue and keep your equipment running smoothly for years. 6. Engine Vibration. Engine vibration is a common issue experienced by owners of the Kawasaki FR730V engine. Excessive engine vibration can cause wear and damage to engine components ...

4. Apr 30, 2018 / Kohler 7000 Started Surging Suggestions Needed Please. #1. Hi Follks, I am not the best at fixing small engines so I am trying to learn. I have a Troy-Bilt Zero turn with a Kohler 7000 Engine and Walbro Carb. The engine started to sputter and die when I ran it for 5 min. The first thing I tried is pulling off the carburetor ...Joined May 16, 2013. 551 Posts. #77 · Sep 29, 2016. Now that the motor is fixed (hopefully) register a complaint (in writing) with the dealer, detailing every aspect of what the repair shop damaged. Hand the service guy one copy, and keep another ... get him to acknowledge & sign it if possible.Tractor - 2011 x300 with FS541V motor with about 180 hours today and regular maintenance. Bought in April with 150 hours. History - At about 172 hours had a rough idle problem develop, cleaned out the carb and replaced the fuel. Likely caused by older untreated fuel.Some articles I have read suggest removing the stock auto-choke carb and replacing it with a Honda CT70 Carb. Check with a local shop to verify, I do not own either and am just passing along the info. Another solution suggested by 'OneRide': Try it with the gas cap off. The tank vent might be plugged. Possibly plugged fuel filter.Kawasaki FH430V surging/loping at idle solved! In an attempt to give back to all of you for all the info I have gleaned over the years I want to share some success with this particular motor I had this evening. The motor is a Vert. 15 hp. I bought it used and ever since I had it has always had the dreaded surging at idle or slightly above.#1 · Jan 27, 2010. Have an 06 3010 Trans. When driving at full throttle engine rpms cut dramatically, then after a few seconds surge back up to full throttle, it does this after …3 posts · Joined 2006. #1 · May 29, 2007. I have a 34Z Gravely with a 15 hp Kawasaki and this is whats happening. When we start it up when it is cold it runs fine. After it warms up it starts to miss on one cylinder. I changed the coil but it didn't seem to help. Has anyone ever encountered this. Your help would be greatly appreciated.Leon Cooperman defended short-sellers and decried attacks on the wealthy as he said the GameStop surge would "end very badly" for the public. Jump to Billionaire investor and hedge...2017 Ultra LX engine issue. I have developed an issue with my 2017 Kawasaki ultra LX (40 hours on the clock) where the engine stumbles / surges at part throttle where it feels as though the fuel is being cut from the engine, at a frequency of around 2 to 3 times a second. The launch is fine, then around 30km/h - 4000-6000 rpm, the engine ...3. Aug 3, 2021 / Surging at full throttle. #5. bertsmobile1 said: We have all seen it before and the usual cause ( about 90%) is a blocked carburettor. After that is debris in the fuel tank cutting off the fuel supply. next is air leak between carb & engine. Then comes faulty solenoid. Then comes blocked fuel filter.piston slapper. a common problem that causes engine surging is dirt ingested into air jets. these are usually found in the carb throat behind choke plate. blow thru the jets with carb cleaner.these jets provide the air in the air/fuel mix that runs engine.I have a 2009 Stingray with a Volvo 3.0 Penta FI engine. When I gave the boat full throttle it waits to go and then surges (like pumping the gas peddle in a car). The dealership has been "solving" the … read more

👇Click here for the full video👇https://youtu.be/QtCAehETLBEA simple fix for a surging John Deere X300 or any mower with a twin Kawasaki FH491V 17hp engine....

14,778. Apr 23, 2021 / Mower runs at low RPM at full throttle. #7. Could be that the throttle cable is not adjusted properly. Try this, move throttle control to full speed, and then loosen the screw holding the cable in place. With the cable loose push it forward as far as possible and then tighten the screw.Watch at proclaimliberty2000 how fixing a small engine that's surging might be easier than you think.Disclaimer: Under no circumstances will proclaimliberty2...The engine's specs, including a 23-hp rating and 39.3 ft-lbs torque, are pretty impressive. While it is the perfect accessory for your mower, you should be ready for Kawasaki FR691V issues. The leading Kawasaki FR691V problems are overheating, a dirty carburetor, backfire, stalling, and weird noises.I have a jd gx75 with a 9hp kawasaki. It surges and won't hold a steady idle at any throttle position . When the blades are engaged then it idles fine. I took the car apart and cleaned it with carb cleaner and that had no effect also checked governor adjustment and pulled the governor spring tighter .JD LX280 18 HP Kawasaki Engine has been surging for at least a year now. Started out by using a carb cleaner in the gas. ... Hold the throttle linkage stationary (fight against the governor) and see if the engine smoothes out. ... It then starts surging very little but quickly ramps up to the full on surge in a matter of a couple of seconds ...To remove the carburetor, you'll have to disconnect the throttle cable, choke cable, air intake, fuel line, a couple of mounting bolts and that's it. Once the carb is off the machine, it's best to clean the carburetor to minimize the chances of dirt getting inside it. Remove the float bowl (you may need an impact driver to loosen the ...Most two-stroke engines have two screws that allow you to adjust the carburetor. One of these screws adjusts the mixture of the gas/oil/fuel mixture, and the other screw controls the speed of the idle. To adjust the carburetor, you need to have the engine running. Slowly turn the screws to adjust the carburetor until the engine is running smoothly.Nov 17, 2013 ... Tighten the throttle cables so there is no play in the throttle. ie no jiggle. That will remedy some of the jerkiness. 2004 Honda CBR600RR 2016 ...

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Unintended acceleration may mean that a car’s throttle is stuck in an open position or that there is a problem with the gas pedal. Mistakes also lead drivers to believe their cars ...Carefully reinstall the black limiter cap onto the adjustment screw. Turn the adjustment screw back and forth until it reads 1450 rpm + or - 75 rpm. Turn the idle stop screw clockwise until the tachometer reads 1550 rpm + or - 100 rpm. The 17-horsepower Kawasaki is a single cylinder, air-cooled engine. The carburetor delivers the fuel from the ...2 posts · Joined 2023. #1 · Jan 14, 2023. 40hrs - 2017 Kawasaki Ultra LX 1500 non supercharged. Engine runs fine at light throttles and full throttle. At a certain part throttle range, it has instant power loss then back again, which can be several times a second until I gas on or reduce throttle. At times, more so after the first occurrence ...When a Kawasaki engine revving fluctuates, this is known as “surging” and it is a direct result of inconsistent volumes of fuel and air being delivered to the engine’s combustion chamber. The problem will lie with the fuel filter, injectors, lines, or the carburetor.Engine surge is a sign of inefficiency in the engine's operation, causing stress on various components. It can wear down parts like the throttle body, fuel pump, and spark plugs over time. In more severe cases, persistent engine surges can lead to more significant engine damage requiring extensive and costly repairs.Engine will run, but it surges, hunts for a constant RPM. 1. Partial Blockage of Main Jet. This is for bowl type carburetors only. Stop the fuel flow to the carburetor, either turn off the fuel valve or pinch off the line with a pair of fuel line pinch off pliers or a pair of vice grips.One: The fuel tank vent. This has been covered extensively on how to mod it. I have done this to mine and I suggest you do it to yours immediatley if not already done. Two: The filler cap. Three: The o-ring and metal retaining ring holding the pump in.11 posts · Joined 2007. #1 · Jun 13, 2010. Please help!! idle problems Exmark Lazer Z HP Kawasaki, 19HP, FH580V 720 hours- real clean machine, all of a sudden the engine surges at idle, runs rough, stops surging at half throttle and at full power with mowers on it runs fine but sounds rough. I figured air or fuel filter bad, changed both and ...Table of Contents. The Problems And Fixes of Kawasaki Mule 4010: 1. Kawasaki Mule 4010 Loss of engine and electrical power Problem: The Fix: 2. Kawasaki Mule 4010 Throttle body and Sensor Problem: The Fix: 3. ….

my dad has a DYS 4500 with a 26 hp Kohler motor PS-SV735-0017. iwas called over to fix and was told it wasnt idling right. The air filter was cloged/ caked with dust. that i thought was the prob. installed new filter and at first wouldnt crank.. then it fired up ran at low idle with no responce in throttle till at mid throttle setting. at full throttle it surges .. is it a …Kawasaki FH500v surging at high idle. last year, while it was an overall reliable engine, it would often be hard to start, especially in cold weather often taking 5 to 7 pulls to get it started and would have to be left on choke for at least 30 seconds. Otherwise the engine would kill itself. The engine seems to start easier easier at mid to ...Jun 16, 2020 · Surging is always caused by an air : fuel ratio that is too lean to maintain a constant speed. Only 2 ways this can happen 1) carb not supplying enough fuel 2) air entering the engine after the carb venturi tube has added the fuel. To test for the latter, start the engine, hold the governor arm at whatever place to obtain the fastest smooth speed. what I did to my Kawasaki Mule to hopefully improve the idle and to prevent further dirt and oil goo from entering the throttle body and fouling up the works.HELP PLEASE kfx700 cutting out at full throttle only! Took it out for 4 days over new years week/weekend and tried a ton of things. Not the fuel filter, not a pressure issue on the fuel tank, moved/checked about every electrical connector i could see on the quad, still no luck.5 posts · Joined 2014. #1 · May 25, 2014. My Hustler 60" deck Mini-Z has a 23HP kawasaki FH680V engine that has a problem no one has figured out. It has run great for 750 hours but now after about 15 minutes of operation under load the engine starts to surge for 20-30 seconds and then shuts off. I noticed that the governor arm goes up and ...matt167 Discussion starter. 4517 posts · Joined 2011. #1 · Jun 3, 2014. My LX188 has always had a light surge without a load at lower throttle positions, but it would often go away. It has started surging badly even at high speed that the hydro surges. It's no issue with the mower deck since it smooths right out, but I don't like it still..Check the Air Filter: The most common reason why an engine bogs out under acceleration is because the air/fuel mixture is 'dirty' or inefficient. If the air filter is clogged or has a lot of dirt in it, it could be bogging down the engine. Clean …Kawasaki FH430V surging/loping at idle solved! In an attempt to give back to all of you for all the info I have gleaned over the years I want to share some success with this particular motor I had this evening. The motor is a Vert. 15 hp. I bought it used and ever since I had it has always had the dreaded surging at idle or slightly above. Kawasaki engine surges at full throttle, scagman52 said: Try adjusting the valves. This may help too. Before you tear it off you might try hot soaking it in a heavy solution of sea foam (1 can in 1 gallon of gas). I did this by just emptying one tank and running it through the system for 10 minutes and letting it sit overnight., #1 · Jan 14, 2023. 40hrs - 2017 Kawasaki Ultra LX 1500 non supercharged. Engine runs fine at light throttles and full throttle. At a certain part throttle range, it has instant …, The job of replacing is simple and will solve the surge. The process is as follows: Remove the spark plug wire - prevents the mower from starting. Remove - Remove and clean the air filter and filter housing - Clean it using soapy water, and when dry, smear some engine oil over the surface of the foam., Kawasaki FR691V is a 0.73 l (726 cc, 44.3 cu-in) V-twin 90° internal combustion 4-stroke air-cooled small gasoline engine with a vertical shaft. The FR is a type of engine called a "heavy-duty residential engine." Three things stand out: the air filtering, the engine covers, and the carburetor. However, many problems exist with this one., Stalls going to full throttle and surges at low throttle. Engine is an 18HP twin Briggs, it was running fine other than a few intermittent electrical issues. Here's what I did. It was about 50 degrees in the garage (15 outside) when I started it last night. It started right up at about 1/3 throttle and full choke., Oct 2, 2019 · i am struggling to figure out this problem. Basically the engine surges or hunts from idle through full throttle. I researched and done all the things that I’ve seen suggested. 3 different carbs. Current one is brand new. Still surges. Fuel pump works. Fuel lines clear. , My machine is a Scag Wildcat 61" with the FD731V Kawasaki liquid cooled engine. About 2-3 lawn cuts ago I started to notice under heavier load (going uphill mowing) the engine would sputter gradually and lose power. ... The last lawn cut going up the same hill mowing at full throttle the sputtering was constant with a loss of power. The sound ..., Find technical Kawasaki engine downloads such as specification sheets, troubleshooting guides, service data, owners manuals and brochures here. Engines Expand Engines . Turfcare . 4-Stroke Vertical Handheld Equipment . 2-Stroke Horizontal Powered by Kawasaki ; Support Expand Support ., Corey King said: 2012 Brute Force 750 surging half throttle. 2012 efi Brute Force 750 4000km. swamp exhaust. power commander 5 (custom map vforce john) Primary Red spring (vforce john) K&N air filter with breather box hood with fine screen filter. Recently by bike when I go above 1/4 throttle it starts to surge., Sep 18, 2020 / FR691V - Low IDIL rough / pulsing. #1. I have a Gravely ZT HD 52 with a Kawasaki FR691V and having some issues at low IDIL. My model of zero turn is 991083. It randomly acts like it wants to stall or cut off at low IDIL , but when throttle is up no issues. New fuel filter, spark plugs, air filter, gas cap and oil changed start of ..., You can try the old school trick of running the engine at full revs and closing the choke until it almost dies. Open the choke and let the engine stabilize. Repeat this process a few times. You might get some good results. If not, the only true way to effect repairs is to disassemble the carb and fully clean it., 3787 posts · Joined 2007. #2 · Dec 18, 2008. Make sure your idle set screw that holds the throttle shaft slightly open is still there and adjusted properly. Then it is a matter of elimination. Check the pilot jet or the pilot jet air screw. I would remove the pilot jet hold down bracket and pull the pilot jet and check it for plugging., Aug 1, 2015 · Aug 1, 2015 / FR730 Surging @ Idle & Intermediate Speeds. #1. I have a 2011 Husqvarna GTH26V52LS mower with a Kawasaki FR730VAS04 engine with a little over 90 hours on it. It has run great but recently at idle and intermediate speeds the engine began to surge but it doesn't die. At full throttle for mowing it seems to run fine. , STEP 1. Verify that the throttle control is adjusted properly as follows: - Move the throttle control to the Choke position. - In the Choke position the arm attached to the throttle cable at the engine should bottom out at the arrow (1). Choke. Full Throttle Idle Throttle Engine Off (BBC version) 2 1., 185 posts · Joined 2001. #1 · Jul 5, 2001. i have a hustler z and love it so far! one problem i have is the kawasaki 23hp engine started surging at about 40 hours. The local dealer cleaned and eventually replaced the carb. problem was fixed, or so I thought. Now I have to engauge blades at full throttle or the engine will die., STEP 1. Verify that the throttle control is adjusted properly as follows: - Move the throttle control to the Choke position. - In the Choke position the arm attached to the throttle cable at the engine should bottom out at the arrow (1). Choke. Full Throttle Idle Throttle Engine Off (BBC version) 2 1., Jun 8, 2020 / Kawasaki FH601V surging / loping at high rpm. #1. I bought a well cared for JD 717a mini z Trak 48" mower last year. It's old but it is in fantastic shape. The motor is a 19hp Kawasaki FH601V It idles fantastic, and starts like a dream, but at full throttle and especially under load it lopes and seems to struggle to maintain ..., However, now that the Kawasaki FX921v engine has 8.7 hours on it, the carburetor is acting up. It's starting to surge. ... Full disclosure, I have no experience on this engine series. On an older series Kawasaki engine the surging problem was caused by a missing welch plug. Reactions: Walker56 and hort101., 5. Apr 16, 2001. #1. We have a 98 25hp Evinrude that has an annoying habit of intermittently bogging down or losing power when we run at full throttle. One of the problems is that it is completely unpredictable as to when it is going to happen. When it happens we stop the motor take it out of the water for a minute or so, start it back up and ..., Chrome/Safari/Opera: There are a number of solutions for dealing with an inbox overwhelmed with spam, newsletters, marketing emails and so on. You can filter your mail, for example..., 2003 Kawasaki FH500V surging at full throttle and smoking. Jump to Latest ..., Aug 1, 2015 · Aug 1, 2015 / FR730 Surging @ Idle & Intermediate Speeds. #1. I have a 2011 Husqvarna GTH26V52LS mower with a Kawasaki FR730VAS04 engine with a little over 90 hours on it. It has run great but recently at idle and intermediate speeds the engine began to surge but it doesn't die. At full throttle for mowing it seems to run fine. , Then lubricate the throttle cable. To adjust, loosen the locknut at the upper end of the accelerator cable. (under throttle grip) Turn the adjuster in completely so as to give the throttle grip plenty of play. Loosen the locknut at the middle of the decelerator cable. (see pic) Turn the adjuster until there is no play when the throttle grip is ..., Most two-stroke engines have two screws that allow you to adjust the carburetor. One of these screws adjusts the mixture of the gas/oil/fuel mixture, and the other screw controls the speed of the idle. To adjust the carburetor, you need to have the engine running. Slowly turn the screws to adjust the carburetor until the engine is running smoothly., Jun 2, 2018 / Kaw FH721v surging. #1. I have adjusted the valves, adjusted the governor, and thoroughly cleaned all linkage. And rebuilt the carb. It will not run unless 1/2 to full throttle, and is surging constantly. I cannot set the idles while it’s running like this., The latest in performance excellence from Kawasaki Engines, EVO engines offer increased power density and greater fuel efficiency. GRAND RAPIDS, Mich. (October 19, 2022) --- Kawasaki Engines has unveiled a new line of engines at Equip Exposition 2022: EVO, the next evolution for Kawasaki Engines, an electronic fuel-injected (EFI) engine that offers increased power density and improved fuel ..., Apr 14, 2021 · 14,778. Apr 23, 2021 / Mower runs at low RPM at full throttle. #7. Could be that the throttle cable is not adjusted properly. Try this, move throttle control to full speed, and then loosen the screw holding the cable in place. With the cable loose push it forward as far as possible and then tighten the screw. , Hi, I have a 2010 Kawasaki FR651V 22 HP v twin. It just started surging as low RPM. I have clean 100% gas, fuel filter was changed about 30 days ago and the air cleaner is clean and new. Looks like the governor is possibly the problem but before hauling to shop I wonder if there is another possible issue causing the surge. Any ideas?, 24,705. Sep 14, 2020 / Engine surges and sometimes stalls after running perfectly for 20-30 minutes. #3. Most likely but not exclusively it could be floating debris in the fuel tank getting sucked into the outlet blocking it off. Next time it happens pull the fuel line from the item closest to the fuel tank and blowback hard through the tank., Carburetor Tuning for Kawasaki Triples. This manual can be downloaded in PDF format (4.8M) ... Plug chop after full throttle operation is required to determine the best size for main jet. Too small a main can damage the motor. ... A lean setting will cause your engine to surge at very low RPM's, bog or cut-out when the throttle is opened ..., Kawasaki EFI technology combines Integrated Electronic Throttle Control and an advanced engine control unit (ECU) to continuously match engine power to cutting load and ground speed, helping to maintain maximum cutting performance through heavy turf, tall grass, hillsides, cold starts, and more. Get razor-sharp results with a Kawasaki EFI engine., Member. Hello everyone I have been working on a project for some time that is a predator 212 swapped yamaha yl2. The bike is a joy to ride but it has had lots of reliability issues over the 6 months ive been riding it. The first issue I encountered was with the engine completely stock. When I would start getting on the throttle it would perform ..., 4. Dec 18, 2021 / Kohler ECV749 (EFI 29HP) Surging at mid to high throttle when idling. #5. ILENGINE said: Doing a TPS relearn may not be a bad idea to see if that improves the idle. It is very possible that the TPS is getting worn sending erratic signals to the ECU. May require a TPS replacement in the future.