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Re: Two Questions Posted by Gene N [Email] ![]() ![]() ![]() In Reply to: Two Questions, Jeff M., Fri, 6 Aug 2004 06:40:04 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The hole in the muffler would not affect boost in a measurable way. If you get boost on a random basis, I would say your Boost Pressure Control (BPC) valve is clogged. I would get symptoms like this were the car would have no boost in the morning, and suddenly start boosting after the car was warmed up. The valve was stuck and then would work loose. (If you are not sure where the BPC valve is, it is that cylinder with three hoses that is tacked to the radiator fan.)
For the second question, is the noise coming from the chain area of the head or somewhere else. The two prime candidates for this noise are timing chain and tired hydraulic valve lifters. There are other possibilities like idler pulleys but there noise is more like a roaring noise.
posted by 155.104.24...
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