Ok so when I am doing about 40 mph going up a hill lightly steping on the gas I hear a like knocking, rattling noise coming from the engine and it only does it at this time. And I have had my truck (1969 gmc shortbed) for two years now and I have heard this noise before in the past and it went away and now I belive it is getting progessivly worse. I am thinking it could be my valves. I had my exhaust just replaced as the prior one was not good, it had broken pipes and broken headers and I ran it like that for about a year and a half. So I am thinking I could have a burnt valve. Please tell me what you think.
have the same problem?
Monday, March 12th, 2007 AT 8:57 PM