I don't know if y'all have seen this TSB or not. I got an April 2000 copy
of Truck Trend and was reading the "Truck Trend Garage" section when I spied
an article entitled "Knock Knock."
The person writing in was complaining of a 1999 Dodge Ram Sport with a 5.9L
that knocks (pings) constantly upon acceleration regardless of the grade of
fuel used.
The article responds back with a reference to TSB 18-48-98. This TSB covers
placement of the ignition wires. It seems that they are having trouble with
"crossfiring" or secondary induction in adjacent wires. This can happen if
they are placed too close together or placed incorrectly (such as long
parallel runs). The TSB claims this can cause numerous symptoms including:
single cylinder misfire, surging in 4th gear and at the top of the list, a
spark knock. According to the article, the TSB outlines a meticulous
re-routing of the ignition wires to fix the problem.
This might be worth a look if y'all ain't seen it.
Hope this helps.
Mike
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