Question about Kohler CH25 PA-CH730-0040 Command Gasoline Engine
Popping in one cylinder , try a new plug first, it may be firing in the overlap stroke but shorting on the compression stroke, seen a bit of it. also look for a vacuum leak on the popping side
Posted on Feb 16, 2016
Not likely carb because both cylinders would act the same; not likely coil because both cylinders fire together, however could be wire/boot from coil, plug or low compression/valve adjustment. Premium fuel works miracles on small engines; try a couple of gallons, it will increase horsepower. Check compression and compare to good cylinder, if close, suspect plug or boot. If compression low, hope that valve adjustment will normalize. Good Luck
Posted on Sep 08, 2010
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Posted on Jan 02, 2017
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