Posted by Tim Holloway on Saturday, January 07, 2006 at 10:40PM :
I started tinkering with the poly I bought to put into my Power Wagon. I figured first thing to do was a compression test. Since the engine has not run in a coons age I squirted half a dozen pumps of an oil can into each cyl. before cranking it. The first cyl was a meager 30 lbs of pressure. The next jumped right up to 125. The next was a flat line at zero. I had pulled the valve covers so I could see the valves bobbing up and down. The exhaust valve was stuck open so I went on to the other cyls. Very good, ranging from 125 to 135. I squirted some more oil into the first one that was 30 lbs and it jumped up to 90 psi. OK, so I figure I may have some stuck (or broken) rings on that one. I went back to the one with the stuck valve. I sprayed some PB blaster on it and gave it some gentle taps for a minute, more to vibrate the oil into t than to dislodge it. I then put a screw driver into the valve spring and gave it a little tweak. POP, up came the valve. So far so good. I turned the engine a couple of times to watch the valve to see if it was going to hang up again. It hopped up and down like a well behaved valve should. Feeling pretty good, I screw in the gauge and give it a crank. Still flat lining!! So, now I am baffled. I filled the cyl up with a mix of kerosene and oil to free things up (if they need it). I was suprised to see the oil start to run out of the stub of exhaust pipe still attached to the manifold. I would have thought the exhaust valve would be higher than the spark plug hole, which is the oil level. If thats so, I am thinking a cracked head maybe? Or am I missing something really basic here? Sorry for the long post, just needed to set the stage.
Thanks,
Tim
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