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Miss fireing

Tiny
HOKE87
  • MEMBER
  • 1995 DODGE TRUCK
  • 150,000 MILES
When u give it gas and try to go after about 40 mph it starts cutting out and back firing like its miss firing
Thursday, September 29th, 2011 AT 10:46 PM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Has the check engine light come on? Have you had the computer scanned?
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Thursday, September 29th, 2011 AT 10:49 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Check fuel pressure. Check ignition timing. Check for vacuum leaks.
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Thursday, September 29th, 2011 AT 10:49 PM
Tiny
HOKE87
  • MEMBER
  • 4 POSTS
A mechanic looked at it and said it sounds like its something in the distributor he fixed it and ran fine for awhile now its doin it again
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Thursday, September 29th, 2011 AT 10:52 PM
Tiny
HOKE87
  • MEMBER
  • 4 POSTS
If u hold the pedal to the floor it goes just fine
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Thursday, September 29th, 2011 AT 10:52 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
It sounds like a major vacuum leak or a sensor issue. Has the check engine light come on?
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Thursday, September 29th, 2011 AT 10:55 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Vacuum leaks. Timing. Fuel pressure. In that order. Unplug the vacuum line to the distributor, plug it with a screw or golf tee and see what happens. If this fixes the issue, you need to rebuild the distributor baseplate.
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Thursday, September 29th, 2011 AT 10:58 PM
Tiny
HOKE87
  • MEMBER
  • 4 POSTS
How do u rebuild that and no lights
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Thursday, September 29th, 2011 AT 11:00 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
It isn't something that's very easy to describe. You have to pull the distributor out. The plate is usually screwed to the distributor base.

Try this first: remove the distributor cap and lightly spray the baseplate with WD-40 and allow to dry completely. Test drive the truck and see what happens. Check with your local Mopar dealer for a distributor rebuild kit. It should come with detailed instructions and good drawings. If not, find a Mopar club near you and ask if they have anyone that can rebuild it for you and that will do it for a 12-pack.
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Thursday, September 29th, 2011 AT 11:59 PM

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