air and fuel problems. Hard start runs for a few minutes and idles up and down on its own, then dies. Have changed all fuel lines, dropped tank and all looks good there. Added electric pump. Yesterday tried to add a pressure valve on out side of fuel filter no pressure at all. 5lbs on the...
1991 7.3 f350 please help going crazy. starts up but revs up and down on its own. Dies when you drive. Filter new, return lines and caps new, fuel line from tank new, added in line electric fuel pump. Tested line with clear going into filter and have major air bubbles. This is driving me...
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