- - fuel problem
09-05-2009 02:03 AM
94 yj 4.0 WHEN JEEP IS COLD IT WONT START. NO FUEL PRESSURE. IF I LEAVE THE KEY IN THE ON POSITION FOR 2 TO 3 MINUTES YOU CAN HEAR IT BUILD FUEL PRESSURE AND THAN IT WILL START. AFTER IT WARMS UP IT STARTS EVERY TIME. ALREADY CHANGED THE PUMP SAME PROBLEM:banghead:
09-05-2009 07:53 AM
backflow check valve. find it,fix it,forget it.
09-05-2009 02:45 PM
X2 All your fuel is bleeding off back to the tank.
09-05-2009 05:27 PM
is the check valve your'e referring to located in the tank?
09-06-2009 07:02 PM
i looked at my parts catalog and could not find the valve. someone will come up with a location......not to worry.
09-07-2009 08:59 PM
there are 2 check valves. one on the pressure regulator and one in the tank. tested with a pressure gage, if you lose pressure but it does not drop below 20lbs pressure it's the one on the regulator. if you lose to below 20 lbs, it's the valve in the tank. the haynes manual has all the particulars listed in the fuel system section. good luck.:punk: