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Briggs & Stratten new heads but no compression

24 hp engine on a Cub Cadet mower. V-twin. 2004 vintage 274 hours. Left side of engine (looking from the carburetor) had bent push rods. On the intake valve the valve guide got displaced and locked up the rocker arm. Decided to buy 2 new heads from Amazon due to hours on engine. Installed both heads, proper torque and valve clearance. Right side 90 psi compression. Left side 0, not even a flicker of the needle.

Double checked valve clearance. Right on 0.004".

Did I get a bad head (original B&S heads in B&S box). What in the world could lead to absolute 0 compression? Will do a leak-down test.

Any other ideas would be greatly appreciated.

Thanks, Ivan Vegvary

Reply to
Ivan Vegvary
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Hey, Mr. Mechanic, is Hotel Econoline back on the road yet? Did you ask the guys you hired to fix it if they'd checked for bad head gaskets?

Reply to
Christmas Card From a Hooker in Minneapolis

What Rangersuck said, plus make sure the valves are closing fully and opening enough -- whatever violence was done to the pushrods may have done Bad Things to the cam and/or lifters.

Actually, I'd pull the cam and inspect both it and the lifters, just to be sure.

Reply to
Tim Wescott

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