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Air in Fuel Rail

Tiny
19MACH199
  • MEMBER
  • JEEP CHEROKEE
I have a 2001 Grand Cherokee with a 4.0L, It has 140,000 rounds and has a serious fuel issue. For some reason it will build up air pressure in the fuel rail that has to be released in order for it to start. I replaced the pump last year, fuel regulator/Filter last month. What could be the cause of the air build up?
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Wednesday, July 11th, 2007 AT 8:07 AM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
A kinked fuel line at the pump?
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Wednesday, July 11th, 2007 AT 8:51 AM
Tiny
19MACH199
  • MEMBER
  • 2 POSTS
I saw a Tech note talking about faulty O-rings in the pump assembly? I'm pretty sure the line is free from kinks but when you slide the tank up in place you can no longer see the lines.
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Thursday, July 12th, 2007 AT 1:58 AM

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