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are my valves shaggged?
Posted: Wed Dec 08, 2010 8:51 pm
by pongo
Its a Diesel and was doing my valve stem seals( have motor out anyway) and put 90psi of air into cylinders to hold valves, and noticed a heap of air escaping past the exhaust valve on 1 cylinder,
Then i tried another and that one was leaking but not as bad.
Im figuring the blown manifold gasket has done more damage than hoped for.
Re: are my valves shaggged?
Posted: Wed Dec 08, 2010 9:05 pm
by Struth
Sounds like they could be burnt unfortunately, but try putting the springs back on the valves and see if air still gets through with a hundred or so pounds of spring holding the valve closed.
Re: are my valves shaggged?
Posted: Thu Dec 09, 2010 8:50 am
by pongo
Struth wrote:Sounds like they could be burnt unfortunately, but try putting the springs back on the valves and see if air still gets through with a hundred or so pounds of spring holding the valve closed.
that was with the valve springs in place.
that head was xrayed and had a slight crack starting to appear. looks like ill have to send off my spare one for testing,etc
thanks