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07-05-2010, 01:40 PM
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
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Re: 454 lifter tap??
If it is in fact lifter noise theres a high chance that your cam is starting to wipe out. Hydraulic lifters do not go out of adjustment. What kind of oil have you been running? Have you been using a zinc additive?
The first thing to do is pull the valve cover off and check for loose rocker arms. Another thing to keep in mind is exhaust leaks can sound just like a valve tap. After you pull the valve cover off spin the engine by hand and make sure all the valves are opening the same amount.
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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