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1997 f150 v6, recent fuel pump repair, knocking

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1997 f150 v6, recent fuel pump repair, knocking

Old 04-18-2013
  #1  
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Question 1997 f150 v6, recent fuel pump repair, knocking

A lot of symtoms, not sure what is related to what.
  • RPMs drop to zero when travelling over 50 mph (sensor maybe?)
  • Had issue where it wouldn't start, had to replace fuel pump, but still hesitates to start
  • Drove it with a loose oil plug for a month, obviously not on purpose
  • Running sluggishly
  • Gas gauge stayed on 1/4, but I think fuel pump replacement corrected that problem
Now (2 weeks after fuel pump replacement), I started it up and a horrible knocking, like someone is trying to get out from under the hood. I didn't attempt to drive anywhere, I just shut it down to avoid any further injury.

What things should I look in it to try to fix my truck? Thanks for any help.
Drefoo is offline  
Old 03-07-2014
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I have an 84 Honda. The diaphram went bad on it, and filled the oil pan with gas. I replaced the fuel pump and changed the oil and filter, and it runs fine now, altho I didn't drive it much before I did the repairs. If you have a knocking in the engine, you have a serious problem that will take a mechanic to fix. I'm sorry I didn't see this post before or I would have been prompt to answer you.
C & J is offline  
Old 03-13-2014
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Is your truck smoking bad even in low rpm? If so have a compression test just to have an idea of its engine health.
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