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Originally Posted by p76rangie
Cam could fail if not ran in properly, but I was more leaning towards the cam timing being out. That is, fitted wrong, slipped a tooth on the chain, etc.
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This is something that DAP has suggested. That it could have a slipped tooth or the timing could be off.
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I am not sure from the post as to what problems he is left with. Did the new injectors fix the bucking and not starting problem?
Is the only problem that he has left is with it overheating? If so, what does this mean?
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Well, I have not actually run the truck since the new injectors were put in, but I have been told that it runs worse than before. That it barely starts, and then heads towards over heating. It is smelling of gas out the tail pipe and generally is not road safe. So, that is all I know, but I don't know it from experience.
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There is also a big difference between low vacuum and low compression.
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Um, yea, sorry about that everyone. This should be an indicator of how little I know. But, I am willing to learn! Steve did say low VACUUM not compression. I'm a bone head... sorry.
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Faulty alternators have also been known to fry every electronic component with high voltage. I know that they have replaced various electronic components, one at a time, but a faulty alternator can fry multiple units and switching one at a time might not find it.
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The truck does have a new alternator. Of course, perhaps the old one killed everything in the truck. Prior to the problem I was having a weird issue where all the lights in the truck would ever so slightly dim. Like the radio, instrument cluster etc... they would just slightly dim. That problem appeared to go away after the new alternator was installed, but I only drove the truck about 20 miles before it crapped out again.
That being said, Al at DAP swapped in pretty much everything that can be swapped without taking the engine apart with known good parts, and found no change.
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I am not sure when he states that they replaced the fuel sender whether they replaced the O2 sensor, but if you have a spare one, I would take it.
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There has been no mention of an O2 sensor. We replaced the fuel sender because there was gas leaking from the back and something else I can't remember that warranted such a replacement.