Air in Fuel Rail

JEEP CHEROKEE
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19MACH199
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  • 2 POSTS
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?
Jul 11, 2007 at 8:07 AM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
A kinked fuel line at the pump?
Jul 11, 2007 at 8:51 AM
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19MACH199
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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.
Jul 12, 2007 at 1:58 AM
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