Kawasaki engine surges at full throttle

Kawasaki fh680v surging. 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.

Kawasaki engine surges at full throttle. Hi all and restrorob!! Restro, I have read alot of your posts on this problem and wanted your opinion. The engine runs fine mowing at full throttle. This is a John Deere Quicktrak 647 with 19 hp vert. Then it will surge under no load. I went to the my shop took check it out further. Changed air filter ,fuel filter,and plugs. Same thing.

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An incorrect air-to-fuel ratio mix is the number one cause of ATV bogging. There are two types of bog, a lean and a rich bog. The fix is usually pretty simple, adjust the AFR (air-fuel ratio) as follows: Warm the engine. Locate the air/fuel mixture screw. Adjust the screw clockwise for less fuel/anti-clockwise for more fuel.3. May 12, 2021 / cub cadet riding mower surging. #1. I have a Enduro cub cadet riding mower, and 2 days ago, i had to punched the PTO blade off to avoid an obstruction suddenly, and after that incident, the engine would surge when the PTO isn't engaged. When PTO is engaged, it runs smoothly. I cleaned the carb and it seems good shape, pulled ...Apr 9, 2022 · This is a late 90's model Scott's lawn tractor with a Kohler engine. After sitting a few years, it would start and run, but needed a little TLC to resolve th... Messages. 24,705. Jun 6, 2018 / my TORO has started "surging / hunting" when idling. #2. Surging is always caused by a weak air:fuel ratio. This can be due to a lack of fuel ( blockage ) or excess air ( leak at manifold ). Actually cleaning / replacing the air filter usually makes surging worse. You can start at either the carb or the fuel tank ...Kawasaki FX1000V EFI problems. Hello all, just bought myself a brand new Spartan SRT-XD with the above mentioned engine, 38.5 hp. First half hour of the day went great, wasn’t mowing anything too crazy, then started having engine issues. Every 15-25 minutes the engine would lose RPM’s and nearly die, backfire, and then resume normal …

Move the throttle to the FAST position. Pull the PTO switch up/out into the ENGAGED (ON) position. NOTE: When operating the tractor be certain that the throttle is always in the FAST position. Operating with the throttle at less than full throttle may lead to premature battery wear and a poor quality cut.A Kawasaki 27 HP engine can experience several problems. These include fuel injection, air intake, and exhaust system issues. The fuel injection system may malfunction due to clogged filters or faulty injectors. A poor design or assembly of the air intake system may cause it to become inefficient or damage the engine.This mower runs a half throttle, but surges when trying to run full throttle. Web 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. Minimal fuel system response contaminated or bad fuel presents the main cause of surging on any engine.After you start the bike, remove the key from the ignition and put it in the gas cap. Next time it starts surging, pop the cap and see if it stops. - Rich. 2006 1600 Ultra-Classic. Patriot Guard Rider. Please put your bike year/model in your sig line or fill in your profile before asking for help.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.

Firstly, check to see that the carburetor is securely attached to the engine. Secondly, with a running engine, spray engine starter onto the gaskets and listen for a change in the surging. The engine starter spray will immediately have an effect, replacing the air being sucked in with a combustible substance.Often, mid mowing it will begin to start "cutting out" and running irregularly making significantly less power. It will "clear" itself and generally resume running smoothly for a while and then revert again. Here is a video of what it sounds like at full throttle (no load) as it cycles from running well to not:O.S. Engines Support - Pumped OS FS-91 surges at full throttle - I have a pumped OS FS-91 which is running erratically at full throttle - it surges. It will run well for awhile leaving a visible smoke trail but then it sags and the trail disappears. This happens erratically. Sometimes I can get nearly a fuull flightMy Main Activity ( WIND AND SOLAR POWER & You Can Do It ) FOR MY VIEWERS - ⬇️ Complete 1200w OPC DESIGNED SURVIVAL POWER SYSTEM -- 100 Watt Panels https://...F. fixer67. 3092 posts · Joined 2004. #2 · Oct 20, 2004. Try running without an air filter. These new engines of all makes are running so lean you can not running them without an air filter which makes it hard to do carb work on some of them. On some engines I have had to make a special filter set up to do carb work. If you notice that your Kawasaki lawn mower engine is surging, there are a few possible causes. First, check the air filter to see if it is clean. A dirty air filter can restrict air flow to the engine, causing it to run lean and surge. Next, check the spark plug to see if it is fouled or damaged.

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Faulty Impeller. Bad Spark Plugs. Malfunctioning Fuel Pump. 1. Tangled Propeller. If your outboard motor will not throttle up, the issue may be as simple as a tangle. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle.About 2-3 lawn cuts ago I started to notice under heavier load (going uphill mowing) the engine would sputter gradually and lose power. It would go away going downhill, but then repeat going uphill. The last lawn cut going up the same hill mowing at full throttle the sputtering was constant with a loss of power.1,851. May 28, 2015 / Two Kawasaki Engines that Dip and Surge at Idle. #3. Get some Sea Foam fuel additive and give a strong dose to each machines fuel tank. The RPM your machines are running at seems high for low idle. As a carb makes the transition from the low speed system to both the high and low speed system, engines tend to vary RPM.Inspect the vent on your gas tank's cap and clean it if it's dirty. Drain the gas tank, clean the gas bowl, and add a fresh batch of fuel. Or you can inject fuel cleaner to clean the fuel line. After changing the fuel or injecting fuel cleaner run the lawn mower as usual. Caution: Make sure the fuel is below the maximum gauge level.About 2-3 lawn cuts ago I started to notice under heavier load (going uphill mowing) the engine would sputter gradually and lose power. It would go away going downhill, but then repeat going uphill. The last lawn cut going up the same hill mowing at full throttle the sputtering was constant with a loss of power.

The engine sounds and feels bogged down and surges. When I get to the top of the hill I let off the accelerator and I feel like the the tranny reset to normal operation. I park it. The muffler is real hot. Oil is good, water is good. I let it sit for 30 minutes... only the check engine light is on now.My mower has the 24hp kawasaki EFI 750 engine and when dropped to idle it slowly settles into a never-ending cycle of pulsing the throttle to try to attain the target idle revs. If you bump the gas up, it cuts the fuel back and settles into the same pattern quite quickly.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 ...Although your might running at near full speed if it is off load it is still running off the idle circuits of the carburetor. It when you put the full load of the deck on the engine is when start to the main fuel circuit in the carburetor. Also be aware that 698445 has been superseded to 594593.My Husky GTH2248 with the two cylinder Kawasaki engine just started surging at mid to full throttle…but only when the mower is not engaged. The moment I engage the mower deck the RPMs increase and it runs perfectly. Disengage the mower and the surging returns Any ideas? PeteThe main time the loud backfire happens is when starting it. Exactly. Our guys get back at the end of the day and bring the lazers into the shop to change blades. They shut the machine off, jack it up and change out the blades. On start up to move the machines into the back bay, one lazer would back fire, scare the pizz out of the office staff.The engine keeps surging at full throttle (pulsing) even though it is running slightly rich. I have been informed that this engine can suffer from a bad seal at the supercharger plenum chamber or a cracked chamber. I have lapped in the plenum seal face down to a few microns and replaced the gasket, and the chamber is not cracked, the engine ...Surging Engine. OK, we have a liquid cooled 27 HP Kawasaki engine model number FD750D-S04. It has a very bad surging problem from half throttle and above as long as it is not under a load. Once the blades are engaged or if you drive up a hill it smooths out and runs great. Another thing is it backfires and sputters when we take it from full ...This mower runs a half throttle, but surges when trying to run full throttle. Web I Have An Lx277, Air Cooled, Kawasaki Fh500V, 494Cc, 17Hp Vtwin Ohv. Web engine surges.if you close the choke 90% it smooths out and keeps running.you can see the throttle close down to an idle,then governor opens the throttle.Jun 20, 2019 · 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.

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 ...

Bismarck Arkansas. Tractor. 2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010. The last time I mowed with my Ferris with the Kawasaki 691V engine, it started surging like it was running out of gas. I found that the fuel filter was plugged. I took it off, blew it out and finished mowing.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.Excessive production of white smoke. Overheating. Fuel filter issues. Faulty voltage regulator. 1. Kawasaki fx730v carburetor problems. Dealing with carburetor problems on your Kawasaki FX730V engine can be frustrating. Let's dive into some common issues and how you can handle them.crashbf650 Discussion starter. 24 posts · Joined 2006. #2 · Oct 23, 2006. I have a 05 bf 650 with a mose module. If I give it full throttle from an idle the engine almost stalls out then will slow begin to pick up to full power. If I get the engine reving a little then the apply full throttle it will take off better.24,705. Jul 1, 2019 / GT275 John Deere 17HP Kawasaki Backfires and trouble running at times. #5. From memory the engine JD used have the external timing module which kawasaki called an igniter for some strange reason. However we would need full engine & JD model numbers to check that out. Never had a coil on a JD go bad but have needed to ...When it starts, it begins to surge. RPM goes up and down. Governor rotates up and down. This surging happened no matter if at idle or at full throttle. Here are the things I have replaced and checked: I replaced the carburetor...I verified the choke spring is set properly also and governor to throttle and throttle cable...with correct spring ...Yea its real easy. Everything just unscrews and screws back in. The throttle needle will be the hardest thing. When you take something out use Carb cleaner to clean those holes good. 1998 bayou 220. K&N power kit. Back wheels spaced 2.5 inches. Front wheels spaced 2 inches. 22x11.5 mud witches on back.

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Tractor. JD X728. I am struggling with an engine that is surging at all rpm's. It can be made to run smoothly by adjusting the choke almost all of the way closed. The engine as a 17hp kawasaki FH500V twin with 450 hours on the meter.. The first thing that I looked for is a vacuum leak in the intake and found none in the gasket surfaces but the ...Sep 18, 2013 / John Deere GT245, Was Surging, Now Running Wide Open. #1. Hi, I'm new to the forum, but am looking to see if anyone has experienced the same problem. I have a 2005 John Deere GT@$% with the Kawasaki V Twin. It started surging, so I replaced filters, cleaned vent line, removed carb and cleaned. After reinstalling everything, the ...Briggs 22 hp twin surging badly all rps adjust governor arm , tried adjusting both ways now nothing but full throttle. Removed springs from arm, worked throttle by hand. No movement in governor arm at …This is a late 90's model Scott's lawn tractor with a Kohler engine. After sitting a few years, it would start and run, but needed a little TLC to resolve th...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.4010 Mule surging. I have a 2011 mule 4010 that surges at low RPM. it idles ok at start but if i slowly accelerate it gets really sticky and surges. if I floor it it runs great. I have changed out the injectors and cleaned the fuel pump screen. I suspect the Throttle sensors may be the real issue but I dont have the special connector to test this.1 post · Joined 2017. #1 · Aug 3, 2017. I removed and cleaned the throttle body on my 2010 Silverado LT and now i'm experiencing an engine surge when I come to a stop. The RPMs jump two or three times and the truck jerks before coming to a complete stop. I also have bit of a high idle when I start up, and it hangs around 700 for a couple ...Issue: FR691V V twin motor starts up fine. When it starts, it begins to surge. RPM goes up and down. Governor rotates up and down. This surging happened no matter if at idle or …Messages. 7. Apr 27, 2021 / Surging Tiger Cat 2 STCII-61V-26CV-EFI. #1. I have a 2020 Tiger Cat 2 with a Kawasaki FT730v EFI engine. It has about 50 hours of residential use. It cranks and idles fine but increasing RPM's results in a methodical surge in engine speed. It reminds me of a governor problem on an old style carbureted engine I once ...Watch the throttle surge up & down.If I hold the choke at 90% closed it smooths out. ….

Mar 1, 2015 ... Kidding aside, it could be your fuel filter got clogged when you turned up the rpm. Bad gas maybe? Or something got sucked into your air filter ...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 ...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.My mower has the 24hp kawasaki EFI 750 engine and when dropped to idle it slowly settles into a never-ending cycle of pulsing the throttle to try to attain the target idle revs. If you bump the gas up, it cuts the fuel back and settles into the same pattern quite quickly.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.168 posts · Joined 2013. #11 · Apr 22, 2017. Generally there is an adjustment screw somewhere on the carb to increase or decrease the idle. Make small adjustments to see if the rough idle improves. If so, you will probably want to get a cheap tach to verify you are within a safe range.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.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.Aug 16, 2011 · Surging Engine. OK, we have a liquid cooled 27 HP Kawasaki engine model number FD750D-S04. It has a very bad surging problem from half throttle and above as long as it is not under a load. Once the blades are engaged or if you drive up a hill it smooths out and runs great. Another thing is it backfires and sputters when we take it from full ... Kawasaki engine surges at full throttle, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]