Starts fine runs up to RPMs that it should be you start mowing 2 inch tall grass and it just loses all RPMs down to about 1600. Compression is 90 pounds and it seems to be failing the plug to has a new fuel filter on it air filters are coming in but it didn’t make any difference if you took them off and try to run it any ideas on what else to check
I also did a spark test both coils are firing like they should be
I do believe the mower is a 2005 if I’m correct it’s 15 years old can’t tell you exactly how many hours are on it right now because the mower is not mine it belongs to a friend but I think it’s somewhere around 485
All right this is the final follow up with the head pulled the head gaskets were both fine but had one exhaust valve that was carpenter up enough it was sticking it open just a little bit and all the seats look like crap so clean the Valves clean the carbon out of the hands and lap the valves put it back together it seems to be running good enough for him Thanks for all the suggestions and help guys
I also did a spark test both coils are firing like they should be
I do believe the mower is a 2005 if I’m correct it’s 15 years old can’t tell you exactly how many hours are on it right now because the mower is not mine it belongs to a friend but I think it’s somewhere around 485
All right this is the final follow up with the head pulled the head gaskets were both fine but had one exhaust valve that was carpenter up enough it was sticking it open just a little bit and all the seats look like crap so clean the Valves clean the carbon out of the hands and lap the valves put it back together it seems to be running good enough for him Thanks for all the suggestions and help guys
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