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  1. I

    Timing Chain guides SOHC 4.0

    A little update-- I pulled the front timing cover and found both guides on the jackshaft/crankshaft chain completely worn out and broken. The spring tensioner and its springs were missing, and worse yet the fixed guide for this chain had a chunk broken out. That chunk seals the front side of...
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    4.0 SOHC noise?

    Engine noises Welcome chinesemechanic, These engines have a perpensity to eat up the timing chain adjusters. You have two in particular that will be affected, one is in the front of the left cylinder head, and the other is at the rear of the right cylinder head. There are a couple more...
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    Timing Chain guides SOHC 4.0

    I have a 99 Explorer, 4wd, with 165,000 miles on it. It quit while getting on the freeway. Inspection shows good fuel pressure and spark, but lack of any oil going to the passenger side head. I pulled the engine and found the timing chain guides for the right head to have broken in pieces...
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