Re: Flames out the exaust!!

Posted by K.B.-826 on June 13, 2007 at 21:27:53 from (66.188.208.110):

In Reply to: Flames out the exaust!! posted by jonnny2006 on June 13, 2007 at 20:58:38:

How about a compression test? If you do need to change out the valve spring, position the engine so that #2 is about mid stroke coming up on compression stroke, stuff as much rope as you can down the plug hole, then roll it up to the top of compression stroke. That way, your rope will be pushing hard against the valve preventing it from dropping. Nice thing about using compressed air is that you can also use it to leak test the cylinder. Position cylinder to be tested at TDC compression stroke. Have to be exactly at TDC or air will push the piston down. Apply compressed air and listen. If valves are leaking, you'll hear air flowing through the manifolds. If rings are leaking, you'll hear air as you listen through the oil fill opening. If it's a blown head gasket between two cylinders, you'll hear the air leaking into the cylinder next door. If you've got a bad head gasket leak to the cooling system, you'll get bubbles in the radiator.

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