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On 21 Oct 2001, at 12:03, veedub@apartment101.com wrote: > I ran a compression test wet and dry and here's what I found: > > Cylinders 1,2,3 =3D 110-112# (consistent) > Cylinder 4 =3D 92# (this was the cross threaded cylinder) > > I squirted some oil down the cylinder and the compression jumped to > 110# on cylinder 4. So, I am guessing that I cracked a ring. Would > this be = possible if my spark plug was cross threaded, and that > cylinder was running lean? Or would this have been a previous problem > waiting to happen? I don't know if these things might be related. I would suspect not. > I will take the engine out and get a better inspection tomorrow. In > the meantime, I appreciate any thoughts you could send. If the threads are okay then just leave them, otherwise take the bad one to an automotive machine shop to have a Helicoil put in that hole. This CAN be done with the engine in the car, but if you are willing to take the head off they can do a better job if they can see both sides of the threaded hole. You DON'T want to leave an extra half turn of helicoil sticking into the combustion chamber. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/