At 11:38 AM 12/13/99 PST, you wrote:
> <snip>
>The pinging happens at anytime. Cold, warm. It doesn't matter. Its happen
>when the truck is under a load. Like going up a hill and not giving it
>enough gas to down shift, or riding down the road and giving it enough gas
>to maintain speed.
It really sounds like your truck is in a constant lean state. This, in turn,
will cause very high combustion chamber temperatures which will, in turn,
cause
pinging.
>The plugs look like they belong on a vehicle with 70+ thousand miles on it.
There won't be a chance to get rid of pinging without a good set of plugs.
Try the Autolites (one range colder). When you take your old plugs out,
document
their condition by cylinder number...wet/dry, colour of the tips, deposits
on the
tips, anything else you notice. Put the 180 tstat in to make the computer
signal
for a little, richer mixture. These two things will not be very expensive ...
just takes a bit of time for the do-it-yourselfer.
> <snip>
If you get a 4th of July show when you check the running engine at night,
you'll
know that the wires should be replaced as well.
Let us know how these 3 things turn out. Good luck.
Bob. Southern Ontario, Canada.
'97 Dakota CC Sport, FR, 5.2L, 3.55 SG, auto.
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