Quote:
Originally Posted by mitch_04
Check your fuel pressure, smoke the intake for vacuum leaks, make sure your exhaust manifold bolts aren't broken off. All very common problems, especially the rear and front manifold bolts. Also, the rear knock sensor likes to fill up with water as the seal ages and no longer fits tight in the valley cover. The harness also likes to crack with age and let the wire break.
I have done all of these dozens of times, each. Had some under 100k miles, had some that had 300k. Those pickups just don't die.
I've only once had to replace a bad coil on an pickup engine of the LS variety. It had 200k on it and had been in a field for 2 years.
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Sorry I forgot to mention I bought it new and have never messed with it.
Where is the knock sensor?