It could be the radical timing curve syndrome. At cruising speed, the total
timing can be anywhere from 39-42 degrees BTDC. On a quick stab, the overly
advanced timing can cause noticeable, if not severe, "Pinging" (gasoline grade
depending).
I found this to be the case on several Dakota's (97-99) after initially testing
a local DML'ers '98 Dak with my scanner. We found that at cruising, he was at
40 degrees BTDC and on a passing "stab", it pinged pretty bad for about a
second or two before if went away.
- Bernd
> Ok,
> I probably don't want to know the answer to this:
> I was getting on the Highway today and there was a Eighteen wheeler
> comming up the right lane at me, and he couldn't move over. So no
> problem, I gun it hard in third to get up to speed in front of 'em, and
> I hear this gawd aweful noise come out of my engine right before I shift
>
> to fourth!!!! Sounded like a bunch stones rattling around in my engine
> block!! Any ideas, did I break somethin??!............
>
>
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