motor

[jerrys cp]

can anyone tell me why im getting back fire out of one side of motor and why i got 145 pounds of compression on all cylinders except one i have 85 pounds

[JetBoatRich]

Sounds like you need to work on that engine, head gasket leak etc. wink Have you pulled the head yet?

[Hustler]

Maybe a bent valve? :rolleyes:

[JetBoatRich]

Hustler:
Maybe a bent valve? :rolleyes: Thanks for the change wink

[geraldscp1234]

im thinking a valve if it was a head gasket wouldn't i have water some where in motor because i dont have any no where

[Floored]

put that piston at tdcc and run an air line to it then listen to intake, exhaust, adjacent cylinders, and crankcase for a hiss. my .002

[hack job]

maybe you busted some rings on that piston?
there are lots of reason the only way to find out is to dig in to it.
check the valve timing and if its all straight then you have other problems. frown

[SoCal Power]

As Floored said, perform a leak-down test first then proceed from there.

[geraldscp1234]

thanks for all the help took heads to hutchisons machine today and had a valve seat totally gone and the guild was two times the size it should bee thanks

[JetBoatRich]

geraldscp1234:
thanks for all the help took heads to hutchisons machine today and had a valve seat totally gone and the guild was two times the size it should bee thanks I think you just may have found the problem. :(
Good luck on the repairs