Bent Valves=Smoke?
06-17-2012, 06:38 PM
#1
Racer
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Bent Valves=Smoke?
I tested the compression on my car and #2 was dead so I went ahead and pulled the head to replace the valve which was slightly bent, along with #3 so I replaced it too.
The car was smoking a lot of bluish smoke beforehand and vacuum was quite low and fluctuated. The head was recently rebuilt with all new parts and I could barely wiggle the valves in the guides so I figured they were still good.
Could the smoking have been caused by the 0 compression in the cylinder? Maybe since the injector was still firing but the mix wasn't combusting so it would just shoot it all out of the exhaust as smoke?
Sorry for the dumb question
The car was smoking a lot of bluish smoke beforehand and vacuum was quite low and fluctuated. The head was recently rebuilt with all new parts and I could barely wiggle the valves in the guides so I figured they were still good.
Could the smoking have been caused by the 0 compression in the cylinder? Maybe since the injector was still firing but the mix wasn't combusting so it would just shoot it all out of the exhaust as smoke?
Sorry for the dumb question
06-18-2012, 01:00 PM
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In theory, oil will enter the combustion chamber by one of two ways. Past the rings, or down the valve guide past the valve stem seal. While the head is off, I would replace the seals and check the valve stems/guides even if they were recently done.
http://www.pelicanparts.com/catalog/..._pg1.htm#item3
http://www.pelicanparts.com/catalog/..._pg1.htm#item3
