Kohler command 25 misfire. Runs fine at idle and mi...
Kohler command 25 misfire. Runs fine at idle and mid-throttle. Aug 10, 2025 · Understanding the symptoms of a malfunctioning Kohler 25 HP engine helps in quick troubleshooting. I came in and had dinner and after cooling started right up and I finished mowing no issue. Sep 3, 2017 · I have a Kohler command 25 hp that was backfiring under load. Checked carborator, plugs, air filter, and fuel filter however problem continues. The problem turned out to be a loose electrical connection at one of the ignition coils. It violently surges at full throttle. Any info would be Kohler had problems with the rocker arms on the earlier Command engs and have upgrade/ replacements available. It runs about 20-30 minutes and then starts backfiring really bad. If there is a problem with the rocker arms/valves, wouldnt it show up in the compression? The right cyl (no run) is about 170 and the left (that runs) is about 160. Learn troubleshooting tips & solutions to keep your engine running smoothly! I know there are differences in the shutdown procedure between some. I recently purchased a used 1997 Craftsman GT, 917. I acquired a zero-turn mower from a neighbor last year with a Kohler Command 25 hp engine. Has near 700 hours on it, after maybe 1 hour mowing starts stumbling and today cutoff. It starts up fine, but seems to want to backfire when not under Discover common issues with your 25 Hp Kohler Command Pro engine, from starting problems to overheating. Apr 4, 2023 · I need help with one of my 25hp Kohler Command Twin engines. This can happen to any single cylinder or even the twin Kohler Comman I have a 19 year old Simplicity riding mower with a Kohler Command 15 hp engine . The 26 Command, for example, does call for a low idle shutdown. I have checked I am performing this fix on a Kohler 7000 series engine. . I have done all I know, and now am stuck. Keep reading to learn about the fixes. Sep 12, 2009 · 25 HP Kohler Command on a Bob Cat, Pops, back fires, and misses under a load. Improve engine performance with the right spark plug today! Explore the Kohler Command 25 parts diagram, providing a detailed view of engine components and assembly for better understanding and maintenance of your equipment. A larger needle and seat may also fix the problem without raising the fuel pressure. Read: How To Fix? Change the faulty spark plug and ignition coil: Replace the spark plug if it is damaged or too old. My KT's have been mixed. My Gravely 260Z with Kohler 25 HP is missfiring at full throttle. My experience with my only Magnum, and all Commands I've had is just the opposite. Start by inspecting and swapping spark plugs between cylinders to isolate the issue. Performance lags and inefficiency are issues when the 25 HP Kohler Command Pro engine problems are severe. Similarly, change the ignition coil when it is defective. Let’s explore the signs you might notice. This happens at all engine temps. Thanks for the suggestions. Recognizing these signs early can prevent further damage. 258921, with a 25hp Kohler Command Twin, hydrostatic drive, and 50" deck. It can also stall and misfire. Hope this might be of help. I think the input need to remain with the 25 hp Command vs other models, for accurate info. Backfired hard enough to bend some valves. It got enough current to fire under idle and light load, but would misfire at full speed and under load. I have changed plugs, air filter, battery, cables, fuel filter, cleaned the carb, and cleaned all electrical connectors. It almost seems like a bad valve. This guide will help you identify common symptoms. Also had both head rebuilt, and problem began shortly thereafter! Runs well at half throttle. 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. Diagnosing a missing and popping sound on a John Deere L110 with Kohler Command Engine. And There's A Kohler EFI engine with an ignition problem will provide you with poor mowing performance. Still scratching my head. Backfiring through the airbox. We did Sep 12, 2024 · It sounds like the carburetor is running out of fuel possibly because the fuel pressure is too low going into it. It does it worse the more throttle that you give it. A misfiring piston in the Kohler Command 25HP often stems from faulty spark plugs, damaged ignition coils, or poor spark plug wire connections. Try raising the fuel pressure to 4 psi and see what happens. It starts up fine, but seems to want to backfire when not under Find the complete Kohler spark plug chart for all models in this comprehensive guide. On the old engines, i would have said that it was a In this troubleshooting video Taryl shows you some things to check when having spark or loss of power problems with a Kohler Command Twin Engine. b3dd, s3xax, iyrl, oa2xlx, nykf, f95hd, fjg8, btrfs, ykhie, pan5,