Question about 1992 Chevrolet C/K 2500
The last few weeks my car has been making a tapping noise .then it was getting louder .it got louder when i pressed on the gas and let off .the my son went to start it and a cloud of white smoke came out and he thought it was cold and then he started to pull away and the noise was very loud so he turned around and parked it ?
If this is a SOHC, you probably dropped the #4 valve seat. This is a common problem with the SOHC. My daughter's car did that last summer, and with the seat took out the piston (the skirt was destroyed all the way to the wrist pin) and rod was bent. We were fortuneate that the block was not damaged. It is most likely cheaper to get a junk yard motor if you can find one, or better yet someone who can replace the SOHC with the DOHC engine. The conversion will cost the same as just a replacement engine (~$1300). These engines are getting tough to find.
Posted on Mar 18, 2009
From my own personal experience, it sounds like you may have some pretty serious internal engine issues. Usually white smoke indicated that you've got leaky piston rings. However, the tappingleads me to believe that you may have a blown head gasket. Try checking the oil and the coolant. If the oild looks like chocolate milk or is gatering "foam" around the filler cap, or if your coolant appears to have oil in it, you're going to have to most likely get the head gasket replaced. I would drive it as little as possible to keep from throwing a piston rod until you know exactly what's going on. Sorry to be the bearer of bad news, but that's probably what's wrong with it. Hope this proves to be useful. Have a nice evening.
Posted on Nov 24, 2008
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Posted on Jan 02, 2017
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