91 truck with r22 skips in the powerband timing chain was replaced fuel filter and pcv as well still skips in the power band help
Hi William, I'm not very sure what you mean by "skipping in the power band." The 22 R does wear out the timing chain sprockets. You would be wise when replacing the chain, also to replace the guides, tensioner and the complete set of sprockets. As I have said, I cannot identify the problem you're having from you description, but taking a guess, if your vehicle is fitted with a carburetor and not fuel injection, are you experiencing a flat spot during acceleration? This usually happens during take off and low engine revs. If this is the problem the fault is with the carburetor, between the throttle body (the lowest part) and the section containing the float chamber. It is sometimes possible to strip the unit and polish the two surfaces using a sheet of wet and dry emery paper laid on a sheet of glass, until both are perfectly flat, but the best course of action is replacement of the carburetor. If the engine is fitted with injection, remove the intake manifold and inspect all gaskets between fuel delivery areas and the cylinder head, as leakage of air between the manifold and cylinder head can also result in a flat spot or spots. If this explanation does not solve your problem please let me know as many details as possible, with descriptions of the symptoms and when they occur. Regards John.
May 23, 2014 |
1991 Toyota Pickup