Kohler engine surging at idle

Based on the KOHLER Command PRO® commercial engine design, the air-cooled, V-time 7000 Series will run rings around your neighbors. It features a 3 year, unlimited hour, limited warranty. Specs. Features. Engine Uses. Technical Documents. Parts & Warranty. Follow us on to find the latest updates on our products. HELP. Contact .

Kohler engine surging at idle. The problem showed itself at first like a slight "miss" occasionally when pulling a load, and eventually, over a couple months, it led to "surging" at idle and complete failure while cutting 5" high grass after only a couple of feet. The sputtering seemed to only occur after the engine warmed up (about an hour of cutting) at first but over the ...

Kohler engine surging. I took out dad's Gravely from winter storage, sharpened the blade and started cutting grass. It was running smooth, then about 5 minutes in, the rpm started surging. It idles just fine. It surges anywhere above idle. If I hold the throttle on the carb, the engine smooths out and just hums.

Apr 10, 2005 · Before making any carb adjustments you need to let the enigine run for about 10 minutes, at idle set the adjustment low and right as the engine wants to die due to low rpm's, start increasing it till it's smooth. That should have you right around 1200-1300 rpm's. Recheck the oil level. Keep it below the max line. I made this video after following a couple tutorials. Surging lawnmowers was always an issue but I watch Taryl's video on how to fix the surges, and seemingl...A snow thrower engine that is operating as per its new engine design standards will most likely experience this type of non-load intermittent surging. If a snow thrower engine is not operating as a it did when it was new, then probable causes to this issues are most likely fuel or fuel line related. A snow thrower with fuel issues may also ...Aug 12, 2019 ... How to diagnose and repair a lawn mower's surging engine, will not start, and / or will not stay running. Air - fuel - spark right?13,811 posts. Joined: November 25, 2009. Military Member: Coast_Guard. Location: New Windsor, Maryland. #3. Posted August 4, 2011. If it is a Carter carburetor, turn both needles all the way in until seated, then back them out 2-1/2 turns for the idle, and 2 turns for the high speed. That's your starting point.In this video Shane goes over some steps you can take if your Kohler EFI engine is over fueling on your Brandt auger.Apr 28, 2023 · After reassembling everything with motoseal on the gaskets there is no surging. The mower now runs better than when I purchased it in 2017 with 50 hours on it. No longer needs choke to not stall while engaging the blades... idles and runs smoothly at high idle w/no load. I hypothesize this was leaking on the carb to intake manifold gasket. When I first fire it up, the mower (Kohler Engine) runs smooth. However, as soon as the motor warms up it begins to surge in a very rhythmic surge and idle back, surge and idle back. If I drive the mower (not idle) the surging goes away and if I engage the blades, the surging goes away. I have put a new fuel filter on, new spark plugs, new fuel ...

If they do not, replace the faulty one. 2. Rough idling. The Kohler EFI engine can have rough idling issues due to faulty sensors like MAF and TPS, vacuum leaks, and a dirty fuel injector. If it occurs, you can experience excessive shaking while the mower is in idle condition. It can also stall the engine.Kohler KT725 Surging. I have changed plugs, gas source, filter, fuel pump and carb. Plugs are not fouled and everything looks good but as soon as the engine is warmed up, there it goes. Can anyone help?Surging or erratic idle may also be caused by a faulty carb or vacuum leak. Vacuum leaks are commonly caused by bad carb gaskets or cracked manifolds. ... Kohler Engine Surging Repair. This video covers the complete repair of a surging Kohler engine. Kohler engines are easy to work on, and in many cases, just a few minute’s …Based on the KOHLER Command PRO® commercial engine design, the air-cooled, V-time 7000 Series will run rings around your neighbors. It features a 3 year, unlimited hour, limited warranty. Specs. Features. Engine Uses. Technical Documents. Parts & Warranty. Follow us on to find the latest updates on our products. HELP. Contact .3,756. Location. Bismarck, ND. Tractor. Husqvarna YTH24V48 riding mower, Branson 3725CH. Start with the easy stuff first. Take out and blow out the air filter with compressed air. Blow from the inside to the outside of the filter. If that doesn't fix it, then try a new fuel filter.Kohler Command 27 Issue. So I have a Kohler Command 27hp v twin on my 72" toro zero turn and I bought it with bad coils, I swapped them to the "older" style coil as that's what everyone does due to the new ones they had designed back then being so in reliable and haven't had too many issues with the mower since. This was a year ago.3. Excessive Engine Vibration. If you notice excessive vibration coming from your Kohler 7000 Series engine, consider the following troubleshooting steps: Check for Loose or Damaged Parts: Inspect the engine components, including the flywheel, blades, and mounting bolts, for any signs of looseness or damage.

A leaking fuel injector can cause the engine to run rough, which might cause an extended crank and hard start when hot. Kohler Engine leaking issue. A lot of symptoms are engine stalling and backfiring, difficulty starting the vehicle, poor acceleration, and a rough idle. Fuel leaks into the combustion chamber might be shown.2. Engine Running Rough or Surging. If your engine runs rough or surges while in operation, it is likely a result of fuel system or carburetor issues. Follow these steps to resolve the problem: Inspect the Fuel Line and Filter: Check the fuel line for any restrictions or damage that may hinder the fuel flow. Additionally, clean or replace the ...If troubles persist after checking the possible causes listed or you are unable to identify the problem, call KOHLER Engines Customer Service at 1-800-544-2444 or contact your local KOHLER dealer.Engine Surging - Snow Thrower. Aug 1, 2017 • FAQ. Details. Article Number. 000001916. Problem. Why does the engine speed increase and decrease slightly every few seconds when it is at idle? ... For independent brand engines visit Briggs Stratton / Honda Power Equipment / Kawasaki / Kohler / Kubota / Continental-Linamar-Onan. Details. File1.

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Spray it around the manifold and gaskets while the engine is running. Any change in idle indicates a leak. Inspect Linkage and Springs: Look for signs of wear or damage and replace if needed. 9. Stops suddenly. ... A Kohler engine might surge because of a blocked idle jet, meaning something is clogging the part of the engine that …Kohler CV624 20HP SURGING Problem. I have a Craftsman rider with a Kohler CV624 Command Pro engine with awful surging and running problems. The engine will not run unless the choke is pulled fully out and then if sitting under no load the engine hunts and surges. If driving the tractor with choke out the engine runs very well.The 27 HP Kohler engine is a reliable and powerful choice for use in a variety of small engines, including lawn mowers. However, like any engine, it is prone to experiencing problems from time to time. Some common issues that have been reported with the 27 HP Kohler engine include surging, missing, and backfiring. In this blog, we will explore ...In this video I show what it took to get the engine on my mower running smooth again, in my case. I am no pro, this is just me trying to DIY and save a few b...Messages. 95. Location. Michigan. Apr 6, 2022. #1. Looking for some help on a friends ~2012 eXmark X-series with a Kohler ECV749 EFI engine and the 60" deck. Running on one cylinder at idle and then really rough at full throttle with RPM's surging with no load and smells like it's running VERY rich. Put in new air filter as the one that …

There can be many causes for engine surge, and they may vary from one car model to the next. When this fault appears, there are a number of components or systems you may want to look into first: Vacuum leaks at the intake manifold or vacuum hoses. Leaking, sticky, or partially restricted fuel injector (s) A faulty emission control system.Kohler engine surging. I took out dad's Gravely from winter storage, sharpened the blade and started cutting grass. It was running smooth, then about 5 minutes in, the rpm started surging. It idles just fine. It surges anywhere above idle. If I hold the throttle on the carb, the engine smooths out and just hums.Here are some additional tips for troubleshooting a Kohler engine that is running then dying: If you have recently filled up the fuel tank, try draining the tank and refilling it with fresh fuel. Old fuel can cause engine problems. If the engine is running hot, try letting it cool down before starting it again.Feb 2, 2020 · Bobcat 225 surge at idle. 02-02-2020, 11:03 AM. I’ve got a bobcat 225nt, with kohler engine. Used it yesterday and ran perfect, today it’s surging at idle, but perfect under load. Any ideas? Has new plugs, new fuel and air filter. Edit:... scratch this. I got to thinking about it, and remembered the guy I bought welder from said he cleaned ... Check the gasket, tighten the bolts and inspect the air-intake manifold for leaks. Tighten bolts or replace worn parts as needed to correct any problems that arise during troubleshooting. Lawn mower surging results from continual accelerating and decelerating of engine revolutions. The sound resembles repeatedly throttling up and powering down ...If troubles persist after checking the possible causes listed or you are unable to identify the problem, call KOHLER Engines Customer Service at 1-800-544-2444 or contact your local KOHLER dealer.If the engine still surges while there's a load on it (or it dies out completely), here are some quick tips to troubleshooting an engine surge: If the machine is equipped with a fuel pump, check to make sure it is working properly. Inspect your governor as it may be set improperly or sticking in place. Clean, rebuild or adjust your carburetor.Before making any carb adjustments you need to let the enigine run for about 10 minutes, at idle set the adjustment low and right as the engine wants to die due to low rpm's, start increasing it till it's smooth. That should have you right around 1200-1300 rpm's. Recheck the oil level. Keep it below the max line.

Kohler Engine Surging. Kohler lawn mower engine surging or stalling can be caused by many different things, but the most common ones are fuel starvation and a clogged carburetor. Fuel starvation happens when you run out of gas or oil. When this happens, some engines (especially gas engines) may try to keep running by drawing extra air into the ...

The problem showed itself at first like a slight "miss" occasionally when pulling a load, and eventually, over a couple months, it led to "surging" at idle and complete failure while cutting 5" high grass after only a couple of feet. The sputtering seemed to only occur after the engine warmed up (about an hour of cutting) at first but …Got Chrome? Surging/hunting is usually a sign of being too lean. If it's surging at full throttle or thereabouts, richen the high speed needle. If it's at part throttle, it might need a little richer setting on the low end. Small adjustments with testing in between will get you where you need to be.Here are some additional tips for troubleshooting a Kohler engine that is running then dying: If you have recently filled up the fuel tank, try draining the tank and refilling it with fresh fuel. Old fuel can cause engine problems. If the engine is running hot, try letting it cool down before starting it again.My Craftsman T210 has the Kohler 5400 KS540-3011 18 hp single cylinder engine. This year it started surging while running at full throttle. I'm looking for suggestions on how to fix it, and if this engine has a plastic governor gear. Broadly speaking, surging is usually a fuel or carb issue. At a given throttle setting, the carb isn't providing ...328i Idle Surging. My e92 328i will have an occasional idle surge when coming to a stoplight. This happens mostly in the morning when the engine is cold and the AC is on. Managed to get a video of it today and wondering if anyone has experienced something similar. The idle usually moves a little (+/- 100 RPMs) on cold starts and when the engine ...The coronavirus pandemic has led to a surge in downloads of mental wellness, and specifically, those focused on meditation, dealing with anxiety and helping users fall asleep. Acco...on the front of the carb, there are two screws. One with a black plastic sleeve. Jack : let me see if I can find a picture for you. Jack : ok the one that has the black plastic that is the low idle fuel needle, do not turn that one, the idle adjustment should be up higher than that one and should be at the top in kind of the middle.

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The good news is in many cases, engine surging can be repaired with little cost. Learn the causes, and how to troubleshoot and fix this common engine problem in just under 45 minutes to drive trouble-free. Engine Surging: Symptoms Surging or misfiring. Engine surging is different from a difficult start or a no-start problem.I HAVE A 2006 54 INCH GARDEN TRACTOR WITH A KOHLER 26HP COURAGE ENGINE. ENGINE SURGES IN IDLE. NO POWER GOING UP SLIGHT HILL, SLOWS DOWN ,ALL MOST DIES. ADDED SEAFOAM TO THE GAS TANK. ... I have a Husqvarna riding mower with a Kohler CV15S engine, spec #41597, ser# (XXX) XXX-XXXX. While trying to start it, a large amount of fuel comes out of ...Aug 28, 2014 · 6,973. Aug 28, 2014 / Kohler engine surging. #4. 93 octane does not mean clean gas. Also the outside of the carb and governor gets missed. You need to clean everything inside and out with carb cleaner and compressed air if you have it. Tiny holes get dirt i them in the carb. 3. Aug 18, 2015 / Kohler courage 20 (sv600) cranks but won't start and backfires..... #1. Hello all, I joined the group to see if I could tap into the knowledge base and see if anyone had an idea what could resolve my current dilema. I looked back about 12 pages or so in the history and didn't see a problem exactly like mine so I figured I'd ...Kevin K said: Another possibility is an air leak between the carburetor and engine, possibly the intake manifold gaskets. One of my Onans had this trouble, it ran perfectly with no or low load, but surged badly when the load was over 3,000 watts. The problem was an air leak in the two piece intake manifold.Kohler Home generator not operating properly. In this video you will find how to repair a Kohler generator with surging and hunting issues. There could be di...location of the nearest Kohler Co. authorized service location, you should contact Kohler Co. at 1-800-544-2444 or access our website at www. kohlerengines.com. LIMITED 3 YEAR KOHLER® DIESEL ENGINE WARRANTY Kohler Co. warrants to the original retail consumer that each new KOHLER Diesel engine sold by Kohler Co. will be free from manufacturing ….

How to fix a surging snowblower or small engine with a fixed jetting system the fast & easy way. In this video, I remove the Low Speed jet, clean, & install...10,279. Jan 17, 2023 / Kohler K-735 Idle Speed. #4. Most likely you have a governed idle system. They are designed to operate between 1500 and 1800 rpm. Most have governed idle speed adjustment screw though depending on the control set you might be looking at bendable tang. Note: you don't want to go below 1500 rpm or you will have surging.There are several ways to make money renting out your car. These are the best ones that will help you earn the most money with little effort. Home Make Money Side Hustles If you’...Apr 28, 2023 · After reassembling everything with motoseal on the gaskets there is no surging. The mower now runs better than when I purchased it in 2017 with 50 hours on it. No longer needs choke to not stall while engaging the blades... idles and runs smoothly at high idle w/no load. I hypothesize this was leaking on the carb to intake manifold gasket. Kohler 7000 series surging. ... I have a KT725 engine on this 2014 Z-Force ZTR. About 2 years ago I ran out of fuel while mowing. ... No longer needs choke to not stall while engaging the blades... idles and runs smoothly at high idle w/no load. I hypothesize this was leaking on the carb to intake manifold gasket. Upper red circle on my earlier ...'06 Exmark TT 60" Kohler 20hp '06 Exmark TT 60" Kawasaki 22hp ... set the idle screw too low , and it would surge down and almost die before coming back up ... 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 ...Tach surges up about 500 rpm and back to idle about every 3 seconds. Probably happens once or twice a week. Doesn't seem to matter if engine is hot or cold. Engine stumbles from idle. Tach drops down from idle to nearly 0 for less than a second and the engine stumbles like it will stall but doesn't. Usually happens as a single isolated ...1. Messages. 1. Jun 3, 2018 / Scag Cheetah Kohler 35 hp EFI Engine Surging. #1. Purchased a Scag Cheetah with 35 hp Kohler Command Pro ECV940 EFI engine this month. The mower was a left over from last year. We have used the mower twice on a 4 acre lot. Last night my wife was using the machine when the motor started surging badly.Bobcat 225 surge at idle. 02-02-2020, 11:03 AM. I've got a bobcat 225nt, with kohler engine. Used it yesterday and ran perfect, today it's surging at idle, but perfect under load. Any ideas? Has new plugs, new fuel and air filter. Edit:... scratch this. I got to thinking about it, and remembered the guy I bought welder from said he cleaned ...Identifying a Lawn Mower Engine Popping Sound and Possible Fixes. Hearing a lawn mower engine popping sound can be startling. That noise indicates that your lawn mower is backfiring, just as similar popping sounds can signal that a car engine is backfiring. When you hear that sound, it's important to get to the root of the problem immediately ... Kohler engine surging at idle, My 2003 Kohler 25hp. CV730, surges when idling, at both low and high speed, but not under load. The governor seems to - Answered by a verified Technician ... The problem i am having is the throtle lever dose not seem to make any difference to engine speed when i move the lever from idle to fast it stays the same rev's. also w ..., The issue is on a woodlands mill hm126, fitted with a kohler 9.5hp CH395 command pro. I can't get it to run an idle speed without feathering the choke. Open the choke and it dies after a few seconds. If I open the throttle whilst its still running it runs up to maximum speed with no problem, but the high speed without load sounds weak and ..., Reason #2: Clogged Vent of a Fuel Cap. The gasoline filler cap on most lawnmowers has a small vent that keeps the fuel at the right pressure and vacuum. Lawn mower engine surging can come from the wrong back pressure, which could force fuel into or away from the carburetor. Find the little hole on the cap that you use to fill the mower’s …, 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., R56 surging and stalling during warm-up Vehicle is standard R56 2007 mini cooper (not 's'). Symtoms of problem are as follows:- car started perfectly and would run perfectly for up to one mile then would hesitate as if it missed firing on one cylinder. The next time I stopped the engine would surge between 200rpm and 1200rpm., If they do not, replace the faulty one. 2. Rough idling. The Kohler EFI engine can have rough idling issues due to faulty sensors like MAF and TPS, vacuum leaks, and a dirty fuel injector. If it occurs, you can experience excessive shaking while the mower is in idle condition. It can also stall the engine., The issue is on a woodlands mill hm126, fitted with a kohler 9.5hp CH395 command pro. I can't get it to run an idle speed without feathering the choke. Open the choke and it dies after a few seconds. If I open the throttle whilst its still running it runs up to maximum speed with no problem, but the high speed without load sounds weak and ..., Hold the lever and clamp in this position while tightening the screw. Briggs Engines: To adjust the governor on a Briggs and Stratton horizontal shaft engine, you would loosen the nut on the governor arm and push the governor arm down, clockwise. Then you would turn the governor shaft clockwise also and tighten the nut., Sno-Tek Snowblower Surges?Today I show you how to fix a Sno-Tek Snowblower surging issue.This also occurs on some Kohlers and Honda engines that use carburet..., I've been rebuilding a JD 314 powered with a rebored Kohler K321 in my spare time for the past year. I've got everything back together and wired up and lucky for me - she runs again! When I get it fired up at low idle all is well and it idles around 2000 RPM. The problem that I'm having is that as soon as I increase the throttle so that it is ..., Jul 10, 2020 · Jul 3, 2020 / KOHLER 19 SV590S Surging. #1. My Toro Time-Cutter Zero-Turn Lawnmower Surges whenever there is no load. It is fine as long as the blade is engaged but when dis-engaged or even when going down a hill with the bade engaged the engine surges. I removed the carb, cleaned it and sprayed cleaner through all the ports, everything looked ... , All Kohler diesel-fueled engines are approved to use HVO. Discover more about HVO fuel. CHECK IT OUT. Kohler PRO 300 Hour Oil Change Kits. Save time and money with the new oil change kits by Kohler. CHECK IT OUT. K-HEM Series. KOHLER Hybrid Energy Modules. DISCOVER MORE. Innovating For The Future., Surging or erratic idle may also be caused by a faulty carb or vacuum leak. Vacuum leaks are commonly caused by bad carb gaskets or cracked manifolds. ... Kohler Engine Surging Repair. This video covers the complete repair of a surging Kohler engine. Kohler engines are easy to work on, and in many cases, just a few minute’s …, Kohler CV730-0017 Sputtering. New problem. 25HP Kohler engine on my GT5000 Sears tractor. Stalled while snow blowing, probably ran out of gas (was low when I started). Filled the gas, now it won't run smoothly (full throttle) without a little choke. The engine surges with no choke., There can be many causes for engine surge, and they may vary from one car model to the next. When this fault appears, there are a number of components or systems you may want to look into first: Vacuum leaks at the intake manifold or vacuum hoses. Leaking, sticky, or partially restricted fuel injector (s) A faulty emission control system., If your mower engine is a Honda or Kohler, the fix is simple. Honda and Kohler’s surging is commonly caused by a blocked idle jet see “Gas starvation” towards the end of the page. If you need more help, check out the “How to fix a surging mower video.”, 50571 posts · Joined 2011. #1 · Jun 7, 2016. I posted some of this in the good morning thread. Dieselshadow suggested I post up a thread about it. I agree. The engine is on our 2014 ZTrak Z915B ZTR. Approximately 100 hours on it. The issue was surging at WOT with no load. I took the carburetor off 4 or 5 times looking for dirt and cleaning it., Jun 26, 2017 / Troy Bilt Super Bronco with Kohler engine. #2. A pickie of the control plate for the carb would be good. When the throttle cable is on choke it has to move the choke butterfly to close it. If the cable anchor gets loose the cable does not move the control far enough to engage the choke fully. The thing under the carb is offically ..., Koehler Courage SV590S idle adjustment I have a cub cadet riding lawn mower with a Kohler courage engine; Engine model number: SV590S and the spec number is: SV590-0220. Carb was leaking so I rebuilt the carburetor. ... If it still surges then you might need to a dramatic governor adjustment to condensate for wear governor wear., 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 ..., Outdoor Gasoline and Electric Powered Equipment and Small Engines - surging on my 23 hp Kohler - I have a craftsman tractor with 23 hp Kohler ovc engine. I bought it new about 7 years ago. It has about 250 hours on it. The engine just started surging recently. It is a CV675S spec 75544 engine, serial 3207306511., 23 posts · Joined 2003. #1 · May 29, 2003. Hello! I have a Scag 52" with a 18 HP Kohler Command. The first time I've had a problem with it was today, it died while cutting. I had to choke it to get it started and it would only stay running under full choke. I pulled the carb and found no dirt, but thoroughly cleaned and blew it out., #1 · Apr 4, 2012. I took out dad's Gravely from winter storage, sharpened the blade and started cutting grass. It was running smooth, then about 5 minutes in, the rpm started …, 657 posts · Joined 2003. #1 · Sep 12, 2009. 25 HP Kohler Command on a Bob Cat, Pops, back fires, and misses under a load. This happens at all engine temps. It almost seems like a bad valve. We did a compression check and were getting about 190 pounds on each cylinder. The exhaust smells like its running lean., 20. Sep 11, 2012 / John Deere L120 Engine Surging. #1. John Deere, Home Depot Special, L120 with the Briggs engine. Full tune up done last may. Plugs, filter, fuel filter, oil change will filter. Fuel treated each winter with stable, never a problem. This season the mower has developed a problem. Full tank of gas, starts right up and mowes ..., 19 posts · Joined 2011. #15 · Sep 5, 2011. This is a clever solution to worn carb shafts and bushings. It has been a bit of a stopping point having to extract pressed-in shaft bushings. This is an adaptable solution to many similar situations. Another solution I recently found to be successful on an old Zenith carb was placing a felt-like ..., 158 posts · Joined 2010. #1 · Apr 28, 2014. Just got my 444 up and running after 2 years of sitting in the shed. At idle it seems to shack around a little, once the rpms are increased it smooths out and the motor hardly has any movement/shaking. The rubber mounts look good and the bolts are tight. Just trying to remember if this it normal or ..., In this video I show what it took to get the engine on my mower running smooth again, in my case. I am no pro, this is just me trying to DIY and save a few b..., John Deere engine surging is a result of an inconsistent combustion process in the engine cylinder (s). More specifically, it is caused by inconsistent delivery of fuel and/or oxygen to the combustion chamber. The usual problems lie in the air filter, gas cap, fuel lines, or carburetor. As you know, for an engine to fire and produce power, it ... , I had a surging Kohler, 26 horse courage that was surging, and the carburetor did not fix it T shirt link😄https://protect-us.mimecast.com/s/RePPCBB8QWI7Oq..., Check the IACV: If the engine's idle air control valve (IACV) is jammed, clean it using the throttle body cleaner.Replace the component if it is damaged. 3. Stalling. Limited fuel supply, ignition system issues and air filter blockage are the primary reasons for Kohler EFI engine stalling. Besides, the defective crankshaft position sensor can also cause the problem., Common Problems. Overheating: One of the most common problems with Kohler 24-hp engines is overheating. Various factors, such as a clogged air filter, low coolant levels, or a malfunctioning thermostat, can cause this. Regularly maintaining and checking your engine's cooling system is essential to avoid this issue., Cub Cadet XT1 - Kohler 725 surging. I'm new to this forum, so hoping to pick the brains of the experts. I have a Cub Cadet XT1 LT46 I bought in 2016 with a Kohler 725 engine in it. Last Fall it started surging when I started it. I added Fuel Mechanic to it and it seemed to smooth it out. When I put away for winter, I changed oil, drained tank ...