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is that a real thing? lol why is the compression as high as it is if the rings aren't sealing? is the oil sealing them kind of like when you check if low compression is rings by adding a teaspoon of oil to cylinder? hope that makes sense just trying to learn here

looking for suggestions on what to look at... well used murray lawn mower b&s 12.5hp engine flathead model 28v707 smokes on startup and while running, oil fouled plug, misfires when running but gets better when hot pulled the head and quite a bit of oil in cylinder...installed new head gasket...

craftsman model 37068 push mower with briggs and stratton platinum engine (190cc i think) exhaust valve seat doesn't want to stay in. when in place, it runs fine but next time i try to start cold it falls out of place. I put it in place with a socket/hammer and staked around the outside to...

finally some update...life keeps getting in the way of mower repairs lately but luckily grass hasn't grown much yet. took a few iterations but we're running again :) got some ethanol free gas to eliminate that from the equation...no change checked the crank key and looked ok. did a leak down...

Craftsman model 37068 self propelled push mower with briggs and Stratton platinum engine (pull start, 190cc I think) little over 6 yrs old Mower will start using starting fluid but can’t keep running for very long while injecting fluid (maybe 15 sec). Short story, had a valve seat come loose...