Misfiring and other problems

Timing chain worn out and jumped a tooth?

ThoseWhoHatedMeCreatedMe wrote:

thank you so much! that explains EVERYTHING!!! oh man, it all makes sence now man... im getting a timing chain same day air!

Sounds like a timing problem to me, too - but take it apart and check first before you start ordering parts. We're trying to diagnose it long-distance with limited information, that might not be it...

But a normal failure mode on the R motor is at somewhere above 150K to 250K miles the chain guides and the slack adjuster wear out, and the timing chain goes really slack. It also gets very noisy, to give you fair warning that service is necessary.

And if it doesn't jump teeth to the point it quits running, the slack side of the timing chain flopping around loose for long periods wears a hole through the timing cover into a coolant passage, and eventually dumps all the coolant into the crankcase oil.

You might get it all apart and find you need a new timing cover, too. Or other fun stuff. And if it did drop the chain guides into the pan, you'll need an oil pan gasket set after you drop the pan to fish out all the debris. Pay the air freight bill only once.

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