I have 2000 S-Type 3.0 that was running perfectly last time I drove it. I have another vehicle that I was driving for the last several months, so the Jag was sitting. The battery was dead when I tried to start it, so I jumped it off. It would crank, but not start. First, I tried to depress the fuel rail pressure release valve to see if fuel was moving throught he system. No indication of fuel with key in on position or while cranking. I realize this is not a good idea, but in frustration, I sprayed a little starting fluid in the air intake, and walah, it started and ran until the fluid was spent. Could the fuel pump have lost its prime while setting for several months, could the filter be clogged enough that no fuel could get through the line, or are there any other thoughts of why the fuel system could have failed by simply sitting in the driveway for several months?

Thanks-
mtfife

 

Your fuel pump relay may have died. Might also check its fuse.

Regards:
Oldengineer

 

Finally got around to checking fuel relay and fuse. That was not the problem. Any other thoughts. I am thinking the fuel pump may have lost its prime. Should there be fuel spewing from the shrader valve on the fuel rail when: either the key is in the on position, or when the starter is cranking. Currently there is no fuel in either case.

 

I would check the fuel filter.... If it does end up being the fuel pump itself, don't fret. It is easy to replace compared to other cars... There is an access panel under the rear seat cusion that gives you direct access to the fuel pump.. Maybe pull it and check for "gunk" clogging the pickup???

 

Should I be able to hear the fuel pump running when the key is turned to on position? Does it have an audible sound?

 

The fuel pump will run momentarily when fully turning the key, then continously when she fires up. You may want to try have someone keep the key turned while you depress fuel rail shrader valve as a means to vacate air and fill with fuel.

 

This, and might as well change the fuel pump......I think there is a few dif fuses that are fuel related.....check them all, it might be something that simple

 

Did you ever figure out what was wrong. I have a 2001 with a similar situation. I right at the point of pulling and replacing the fuel pump.

 

Did you every find out what was wrong with your car because I have the same problem. I have replace the pump, checked all fuses and relays, and car still will not start. I have checked the fuel pressure on the fuel rail and their is no pressure. I have not replaced the fuel filter yet, but I was hoping someone could help me out with this issue

 

Today my wife pulled Up into our driveway while low on fuel.
Now car will not start. Same symptoms as MTFIFE. no fuel from pin valve on fuel rail. Though, it will start if I prime the air intake system with a spray of fuel.
Any thoughts?
Desparate...
Oh, I neglected to add that she parked so that she blocks my truck from being able to leave.

 

Car details as below?

 

Here is my checklist of what to check if your experiencing a "no start, no fuel pressure at fuel rail" condition":

1) Inertia Switch button depressed? - Button (Red) is under driver's side dashboard near the front door near the hood release - make sure the button is pushed all the way in.
2) Check - Fuses and Relays related to fuel pump circuit.
2a) Check for fuel at fuel rail - should spray up when ignition is on, not dribble. Dribbling could indicate a clogged fuel filter. (Be Careful!)
3) Safe Bet - Change the fuel filter (behind front wheel well - driver's side) - When changing if you see black soot or debris coming from the filter it is a safe bet your fuel pump is done or very close to done. FYI - Change Fuel Filter every 10K miles/every year. Cheap Insurance.
3) Remove rear seat cushion and have someone listen for the momentary "2 second swoosh" by the fuel pump when turning the ignition key to run. If you don't hear it then check voltage going to the fuel pump - should be +10.5V - if it is then prepare to change the fuel pump.
4) Good idea to also change the fuel sock of the transfer pump at this time as well. Use a new green sealing gasket for both pumps and ensure you line up the pump correctly when installing - there are notches on the pump.

For some reason when these cars sit a while the fuel pump seems to go at that time. Same thing happened to me.

To add - never run your fuel level low - the pumps rely on the gas to keep them running cool. A pump that has seen better days is prone to failure with running the car with low fuel.

 

Change the fuel filter definitely - easy task, low cost and good insurance, especially since you replaced the fuel pump. Ensure you have installed the pump correctly (notches in pump must sit flush with the notches in the fuel tank) - if all checks out - fully depress the gas pedal when cranking - it takes a while to get the fuel up to the rail and eventually into the injectors.

 

So if I run a live & earth feed direct to the pump should it work, have got hold of a second hand pump but that doesn't work either