No fuel pressure at Schrader valve
#1
No fuel pressure at Schrader valve
Trying to get my 1998 XJR started again. A couple of months ago, one of the coolant hoses under the supercharger ruptured. Car overheated and stalled. I don't think it got hot enough to do extensive damage, but I don't know yet. Due to family medical issues, I had to take a couple months off from working on the car. I've got everything reassembled properly (I think), but I'm not getting any fuel pressure at the schrader valve. I can hear the fuel pump(s) running when I jumper the relays, but the valve only gives a tiny spray of fuel when depressed.
Where might I look? Both fuel pumps replaced a year ago with fuel filter. Very few miles on it since then, and the tank is almost half full. Any ideas? Thanks
Royce
Where might I look? Both fuel pumps replaced a year ago with fuel filter. Very few miles on it since then, and the tank is almost half full. Any ideas? Thanks
Royce
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Further update: When I jumper the fuel pump relay in the trunk, I can hear the pump operate. There is pressure in the fuel rail while the pump is on, but pressures drops to nothing when pump is off. When pump is on, I can hear fuel moving somewhere in the engine compartment. I don't see any leaks. Is it possible it's going back to the tank return line somehow?
Last edited by roycej; 01-20-2021 at 03:51 PM.
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