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Fuel distribution to cylinders

Tiny
TOMGARLAND55
  • MEMBER
  • 1993 DODGE DAKOTA
  • 5.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
Engine floods out and engine shuts off. Cranks back after several spins. Nox ppm fail failed on emissions. Smells like its running rich but no black smoke that I can see. Fuel problem.
Sunday, October 8th, 2017 AT 10:15 PM

4 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,496 POSTS
Couple things to check for this. Pull the vacuum line off the fuel pressure regulator, any fuel in the hoe means the regulator has failed and is adding extra fuel through the vacuum line.
Next would be the coolant temperature sensor. It can fail and make the PCM think it is very cold outside. The result is that it dumps extra fuel into the "cold" engine.
The temperature sensor wiring can fail open and cause the same result.
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Monday, October 9th, 2017 AT 10:56 AM
Tiny
TOMGARLAND55
  • MEMBER
  • 3 POSTS
Where is fuel pressure regulator
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Thursday, October 26th, 2017 AT 9:51 PM
Tiny
TOMGARLAND55
  • MEMBER
  • 3 POSTS
Can't check fuel pressure reg. Don't know where it is located.
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Thursday, October 26th, 2017 AT 9:54 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,496 POSTS
It is on the fuel rail that feeds the injectors. Left rear corner of the intake manifold.
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Friday, October 27th, 2017 AT 2:05 AM

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