GrnDak4x4@aol.com wrote:
>
> Just curious but other than hearing the timing chain rattle, which I have
> pinpointed on my Dak; what are the symptons the timing chain needs replacing.
> Also, will a worn timing chain affect the timing itself? How does incorrect
> timing affect performance and just how good the engine will run. Over time,
> does the timing need adjustment, or does the computer do it? I plan on doing
> this within the next month, and just want to make sure I really need to get it
> done. I figure with 102,500 miles on my truck, it really does need to be
> done. Thanks in advance for the answers to these questions.
> Kyle
> 93 Dakota 4x4 V6
Kyle,
Imagine the setup. 2 gears driven by a chain. When new and tight, both
sprockets begin to turn at the same time, minus any stretch/slack.
Later as the chain stretches and the gear teeth wear, they begin to turn
seperately after the drive gear runs the slack out of the chain,the
driven gear begins to turn.
Results? My friend had a 442 that skipped a tooth and threw it out of
timing so bad that it sputtered and popped until it was replaced, along
with a valve job. It ran great after that.
On belt driven systems, they break and then bend all the valve and
sometimes break a piston or 2.
The computer is probably doing it's best to keep the timing on the mark,
but it can only do so much, so fast. You may have poor starts that seem
to "catch up" after you back out of the gas a little. Maybe a little
spark knocking, less mileage, etc.
My advice? If you can hear it, it's worn out. Fix it right away before
it costs you big time money. Alan S.
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