1997 GMC C1500 6 Distributor Caps in 2.5 years!

1997 GMC C1500
140,000 MILES • 6 CYL • 4WD • MANUAL
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DAWNL_33
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Local shop has replaced my distributor cap 6 times over the past 2.5 years! Everything is okay when new cap installed but after a few months, the truck seems to "skip" or "miss" when driving, causing the truck to jerk a bit over and over - kinda like the gas isn't getting smoothly where it has to go. I have a manual transmission and it happens in 1st to 5th gears, especially when accelerating.
This problem seems to start initially when it's damp/wet/humid outside, but then get progressively worse over a couple of weeks until eventually it won't start at all. Shop replaces distrubutor cap and all is well again. Why does this keep happening? Thanks!!
Mar 18, 2008 at 4:04 PM
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MASTERTECHTIM
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try replacing the spark p;lugs and the plug wires. high resistance in the secondary ignition system will put a tremendous load on the primary ignition system. let me know how you make out
Mar 18, 2008 at 4:19 PM