This is an odd one. My 97 XK8 stalls on a certain hill only. Sometimes it doesnt entirely stall, just wont accelerate. Sometimes it doesnt stall at all. It has happened with a full tank and a half full tank. Anyone got any Ideas?
Thanks in advance for your help.
G

 

Gee, this must be fuel pressure month. You're going to have to make one up yourself, but the first diagnostic test I would be doing for this symptom, absent of any DTC's flagged, is to connect a fuel pressure gauge to the fuel rail schrader valve and drive the car to monitor it. It's almost never gonna be a filter, that possibility is overrated... I'd be suspecting a pump or blocked pump inlet screen, and testing would be the better option than exploratory surgery.

 

Thanks for the input. Would using a fuel injection cleaner or product like that be worth a try ? Had no problems today.

 

If I was a guessing man, I'd say this is one case where the pickup screen for the pump is covered with crud. I just went out and looked at the tank in a "97 coupe, you could conceivably run the tank to minimal fuel level, remove the tank sending unit, and have a peek. Blowing the sock screen clear with compressed air might help, at least temporarily.
you can't blow back through the outlet line from the pump to "back flush" the screen.

I went through something similar on an XJS tank not long ago. The inside was corroded, and there was a silt of fine steel particles inside. I did a quick and dirty job of cleaning what I could with the tank still in place, and stuck a couple of magnets a few inches axay from the pump pickup filter. A thousand miles later I was pulling the tank to flush it.

I'd still test the pressure first if possible, that will confirm or deny fuel supply as the cause. If the screen looks clean upon inspection, then this is another burned link lead/ failing fuel pump story. Not the typical symptom, but a likely cause none the less.

 

Thanks so much I will let you know how it goes. I love this forum !