16 hp Briggs and Stratton compression.

[Roy_Wooten 0]

I have a 1984 Simplicity 6216 with a B&S twin cylinder L head engine. The compression is supposed to be 90-110 psi but mine is running 75 in one cylinder and 65 in the other. It burns no oil and seems to run strong. I am wondering where I need to start looking for the compression loss. It is the origional engine(by the numbers on it),but does not have a lot of wear. Could the problem be in the valves? The tractor was not used for the last 3 years. Any help would be appreciated. Thanks, Roy Wooten

[Al 6]

Hi, 75 lbs is pretty normal. If it is up around 110 the valve clearance is probably to wide so the compression release is probably not able to function. Good luck, Al Eden

[JonetteP 0]

Hi Roy, I would do the valves and scrape the heads. Sounds like a runner!