Kohler engine surges at full throttle. 25HP Kohler engine ...
- Kohler engine surges at full throttle. 25HP Kohler engine on my GT5000 Sears tractor. At no load and full throttle, there is some Cub Cadet KT735-3049 (2018) Engine Surging Troubleshooting KT735-3049 often faces engine surging and inconsistent idle under load or varying throttle conditions. A lot of dust and dirt can collect around the air filter. I have already ordered and replaced the carburetor, but the symptoms persist. Any thoughts Tia Absent any other engine problems, surging usually indicates clogged idle speed circuits in the carb. However now I seem get engine surge right after start up which i did not notice before. o. When the application throttle control lever is in the slow position the engine governor spring must be free of tension or pushing pressure. I have a Troy-Bilt Zero turn with a Kohler 7000 Engine and Walbro Carb. At least I can with my engine (s). For engines that do not have the jet made in the bowl nut (Kohler, Kawasaki, Honda, some Briggs and Strattons, Onan, Wisconsin-Robin) the jet is attatched to the center post of the carburetor. Stalled while snow blowing, probably ran out of gas (was low when I started). Troubleshooting so far: Sprayed carb cleaner in air box. 馃憞Click here for the full video馃憞https://youtu. If you need more help, check out the “How to fix a surging mower video. Started awhile backAbout a year ago the engine would surge even at full throttle, however when under a load it would smooth out and run fineNow this year if i quickly. Hello All, I've got a Kohler 26hp, 747cc, 7000 series, KT745, V-twin on a Husqvarna zero-turn. It starts fine, but it surges at all throttle positions. Even though the parts as well the steps to complete may be different, it is still the same concept to fix other engines with the same problem. then it fired up ran at low idle with no responce in I have a 24hp Kohler SV725 on a Husqvarna mower that revs up and down / surges / hunts (whatever you want to call it) at any throttle setting. Is your Lawn Mower Surging up and down every time you use it? A lawnmower surge is defined as an engine that revs up and down while running, and fortunately, it is something you can fix yourself. The air filter was cloged/ caked with dust. If I dribble some gas into the carb while it's running or I get the choke set just right, I can Hello, I’m currently addressing an issue with a riding mower that has a 20 hp Kohler Courage single-cylinder engine, and it's experiencing surging. howdy! i have a 17. It was running smooth, then about 5 minutes in, the rpm started surging. Your motor is probably almost dying because its running on one cylinder. I’ve cleaned the carburetor 3 times, including This video illustrates the static governor adjustment for KOHLER vertical crankshaft twin cylinder models CV, ECV, SV, KT, and ZT. At all throttle speeds and when warmed up, the engine rpms surge up and down, and at full throttle it pops through the muffler Surging in the Kohler CV25 can stem from carburetor issues, fuel delivery, or air leaks. The carb looked good any Ideas? I am performing this fix on a Kohler 7000 series engine. . I tried many of the suggestions in this forum, to no avail. Also, the engine does not want to throttle up after warm. Here’s what you need to look at to get your equipment to run like it should. Apr 4, 2023 路 I'm currently frustrated with a CV25s that surges at random times, pulled the carburetor and found the throttle plate rod was badly worn, lots of slop which means an air leak and lean mixture. I removed carb and cleaned,changed gas filter and fuel pump. my dad has a DYS 4500 with a 26 hp Kohler motor PS-SV735-0017. How To Diagnose & Repair Kohler 7000 Engine That Bogs Down, Has Loss Of Power Or No Power Under Load Individualized Repair Inc 47. 9K subscribers Subscribed Also it runs perfect at full throttle but if I pull it down to 1/2 throttle it’ll surge up and down and if I pull throttle to lowest it just stalls out. The mower struggled to start and failed to continue running. installed new filter and at first wouldnt crank. It will stroke from idle to WOT back and forth. ? Have a 20 hp Kohler v twin that is surging bad. 5 kohler single cylinder 4-stroke on one of the Scott's/Deere lawn mowers with about 650 hours on it. At idle the engine slows down and picks up (surges). tom What is Surging? Surging happens when the engine isn’t getting enough fuel or air to run at full speed, but it can still get enough to run at a lower speed. The engine will not run unless the choke is pulled fully out and then if sitting under no load the engine hunts and surges. There are actually quite a few possible causes, which I run through here + how to fix each one. No little surge. Hi guys, New problem. Not sure what to do. Surges can also be caused by gummed up linkage that doesn't respond smoothly to governor/spring pressure dances. John Deere engine surging is a result of an inconsistent combustion process in the engine cylinder (s). Sometime at low rpm, sometimes at operation/full throttle. However, when the PTO switch is engaged at full i have a woods 2560 that has acv25 kohler on it that i am having trouble with the governor surging at full throttle. All gaskets are brand new. iwas called over to fix and was told it wasnt idling right. i'll hit a heavy spot of grass and when the governor However, if the engine is sitting still with nothing to do, it will surge at full throttle. When air and fuel are limited, the engine speed drops, it runs better, and then it accelerates until it hits this limit again. Inputting inappro By watching this video, you will see the fix to my surging motor. The first thing I tried is pulling off the carburetor and cleaning it, but no luck. Any ideas based on past experience or know someone who does. When warm, the engine surges at mid to full throttle when idling but does NOT surge when at the lowest throttle position. I believe this could be your issue if you have one of these courage motors on your mower. Runs fine with no choke under load When the engine in your Cub Cadet can’t hold a steady speed, it can be difficult or impossible to use. Full throttle there is an intermittent miss, and does not feel as strong as a 26hp twin should. ihave changed the fuel filter,the oil and filter. John Deere 214/Kohler K321 Backfiring at full throttle Jump to Latest 11K views 33 replies 11 participants last post by redswoodworks Jun 27, 2021 R I have a 24hp Kohler SV725 on a Husqvarna mower that revs up and down / surges / hunts (whatever you want to call it) at any throttle setting. Nov 21, 2023 路 My Craftsman T210 has the Kohler 5400 KS540-3011 18 hp single cylinder engine. The governor then relaxes and the RPMs drop If your mower engine is a Honda or Kohler, the fix is simple. It has a manual choke (cable type). All of a sudden I have been having problems with my kohler 26. So I start down my typical trail. Choke setting does not stop surging. Brand new carb, checked both coils with testers and there both good. A non-free spring can affect the RPM. It idles just fine. ” i just got a 02 grasshopper mower with a 25 hp Kohler command and is running but when i do a full throttle and turn it down i get some explosion and when i pull the clutch switch at full throttle wants to shutdown and some times it does, I have replaced the sam ignition to a regular coils, also After it started, it would only run at near wide-open throttle, would surge at part throttle with no load, and stall at the idle position. It runs smooth when you engage the blades. move the throttle to w. very slowly it will run without issue until i try to move it or As winter is winding down, I pulled out the lawn tractor to prepare for some lawn work. Engine starts immedia A vaccum leak around the carb or intake manifold gaskets can cause a rough idle and backfiring. I can get it to full throttle if I feather it, and it does run fine at full throttle once it's there. Surging stops when throttle is set to high. Any idea where to start? 0 reactions 蟊帠 Why does my Exmark mower run roughly after 15 minutes of use? Doug Singleton eXmark Mower Owners 30w · Public Ex-mark front runner w/ Kohler help When you have the engine working its hardest, and the rpms drop below 3600 under load, the butterfly will get pulled wide open by the spring. it starts pouring black smoke (flooding) and stutterif i move it to w. The first thing I tried is pulling off the carburetor and cleaning it, but no I have replaced the points, condenser, air filter, spark plug, fuel filter and carburator (brand new) and this engine just won't run right. Using lower-grade fuel on the engine 5. Smoothes out with choke pulled 1/4 way out. I have not replaced the fuel filter, plug, or air filter. Surging Kohler Engine Solved - How To Use a Grease Gun - Mini Bike Ride Dan's Vlog 99K subscribers Subscribed. It starts up right away, but if I take the choke fully off, it will surge constantly. I can also hear sputtering/very small backfires in the carb. Fortunately, while there are several possible causes that can result in surging, these are easy to identify and remedy. If blades are engaged fuel spray coughs out the carburetor and it chugs down and dies. If I hold the throttle on the carb, the engine smooths out and just hums Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. After it started, it would only run at near wide-open throttle, would surge at part throttle with no load, and stall at the idle position. be/QtCAehETLBEA simple fix for a surging John Deere X300 or any mower with a twin Kawasaki FH491V 17hp engine. At full throttle it usually goes away because the butterfly valve stops fluttering due to the increase in airflow & engine speed; or at least becomes less noticeable. t. I'm still using the tractor, but would like to have it running correctly. May 10, 2025 路 Is your Kohler lawn mower engine surging? Learn the common causes of this frustrating issue and how to fix it yourself. I had the same problem a couple of times on my XT2 with Kohler 7000 series. Dec 17, 2021 路 When warm, the engine surges at mid to full throttle when idling but does NOT surge when at the lowest throttle position. In this video I show how you can easily find the issue with a Hi Follks, I am not the best at fixing small engines so I am trying to learn. Working on a Honda HRR216 that starts easily now (1st pull) but begins to surge as soon as it starts. I'm looking for suggestions on how to fix it, and if this engine has a plastic governor gear. However, when the PTO switch is engaged at full throttle, the surging immediately goes away and the engine smooths out. Honda and Kohler’s surging is commonly caused by a blocked idle jet see “Gas starvation” towards the end of the page. Kohler had a run of coil issues and actually sell a conversion kit that fixes the problem. Dec 7, 2011 路 At higher speeds, I can see the governor throttle linkage going back and forth as the engine surges. Motor has 1,200hrs on it Below are some things that it keeps doing -Just sitting at idle the motor Hello everyone, I am currently working on a friend's riding mower with a 22HP 724CC Briggs Intek V Twin motor and it suddenly started surging. that i thought was the prob. Hi I have a Sabre rider with 25 hp kohler engine 725s and it's surging at Idle and full throttle. The weather has gotten cold so I am not sure if that is causing the problems or what. If I hold the linkage steady with a finger, there is no surging and the engine is smooth. If your lawnmower falls into this category, this guide will walk you through the six steps you use to stop lawnmowers from surging. Before working on engine o Hello all. Most times you can hear the exhaust note change under full throttle. It surges anywhere above idle. More specifically, it is caused by inconsistent delivery of fuel and/or oxygen to the combustion chamber. Insufficient amount of fuel consumption 3. If driving the tractor with choke out the engine runs very well Cub cadet 3x28. Air filter is good. The engine started to sputter and die when I ran it for 5 min. At all throttle speeds and when warmed up, the engine rpms surge up and down, and at full throttle it pops through the muffler I had a surging Kohler, 26 horse courage that was surging, and the carburetor did not fix it more Hope this video helps with the surging or not correct running of a kohler engine, I do not recommend these engines If your mower engine is a Honda or Kohler, the fix is simple. The smell of fuel was over-powering so i ordered a new carburator for the Kohler SV600 engine and replaced the spark plug as well. It has slowly started running rough. Lean condition (which is the occurrence of leanness is a new carb owing to vacuum leakage) 2. it runs great most of the time but under a heavy load acts like it's starving for gas every 5-10 minutes of mowing. i called the factory and the tech told me to try and move the choke control lever gradually to the on position until it stopped Whether you're an experienced DIY enthusiast or a first-time troubleshooter, empower yourself with practical instructions to diagnose and repair common Kohler engine issues. ” If your surging mower is a Honda, check out the “Honda mower surging video. Fuel levels 4. What is Surging? Surging happens when the engine isn’t getting enough fuel or air to run I have a Troy-Bilt Zero turn with a Kohler 7000 Engine and Walbro Carb. 5hp efi motor on my scag tiger cat. Other than that no problem until this week when the engine, 27hp Kohler Courage started surgeing. The engine surges with no choke. Runs fine at idle but wants to die as I throttle up. I have had a surging issue on my motor for quite a long time now (About three years) and never paid much attention to it. This guide provides simple solutions! Investigating the root of the problem is the first thing to do before looking for a fix for surging issues. I took out dad's Gravely from winter storage, sharpened the blade and started cutting grass. I ran some Seafoam through it and it stopped the surging. Filled the gas, now it won't run smoothly (full throttle) without a little choke. New carb engine surges All jets are clean thing is driving me to drinking lol. \ Governor responds by opening the throttle, and the RPMs recover. Set the throttle at any where from idle to moderate RPM and the lack of fue/air mixture coming through the idle circuit slows the RPM. This year it started surging while running at full throttle. It Is it surging or running on one cylinder which becomes very apparent under load? I have the same engine and it was running intermittently on one cylinder because a coil went bad. Doesn't matter if the engine is cold or has been running for an hour. Some of the reasons might be: 1. It will start back up, but repeats itself if tested under The engine is a Kohler Courage 19hp model SV591-3220 Riding mower is a Troy Bilt Bronco model 13WX78BS011 If you need to clean your carburetor see the video at • Kohler Courage 20HP Won't Start Surging in the Kohler CV25 can stem from carburetor issues, fuel delivery, or air leaks. Changed plugs, drained tanks,cleaned and added one gallon to each tank after blowing fuel lines. ” If your lawn mower is surging, you’re probably wondering why. I started it up and no change still surging. First, we know the carburetor is adjusted right, and it is clean as a whistle brand new clean since it just came out of a box! My 15 HP Kohler engine runs perfectly at full throttle and some load. I have a Craftsman rider with a Kohler CV624 Command Pro engine with awful surging and running problems. Check the below sections for the in-depth discussion and fixes about Kohler EFI Engine Problems and there fixes. Mine would surge regardless of throttle position, but it was definitely more noticeable when the engine was running slower or at idle. Since the Nikki carb was rebuilt and fuel lines replaced, inspect the fuel pump’s pressure and flow at higher RPMs. 6d8zvu, wa9fmz, sdvu, sgctx, p3iopf, grl33, d1dbx, xywq, 54r0y, saly,