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Again, back to the lurid story of failure to start when the engine is hot (well not hot as in overheating, just hot as in at running temperature, that is to say between 1/4 and 1/2 on the temperature gauge). Start the car in the morning (today it was -6 Celsius this morning, key in, wait for glow plug light to go off, start (turns over five or six times), fires up and idles perfectly. Drive along, accelerate etc. no problem. Drive 10 - 15 miles ( at -4 Celsius) Park up for 5 - 20 minutes, gauge is just off 0) Start up after glow plugs off (1 - 2 sec) away we go. Park up for 6 hours, same - no problem. Drive long enough to get engine hot, difficult to do at this time of year! Park up (say 1/2 hour), engine still hot, warm no way it will start without a blast of cold start, then drive, accelerate all tikety-boo. Only error (repetitive) is P1130 - fuel pressure too high, too low. (Very helpful). So over the last two years or so, pressure relief valve changed, pressure sensor changed, pressure solenoid changed, injectors checked So what else can it be ? I read a post on the JEEP SITE , sighting the non return valve (FUEL FLOW BACK VALVE (Yank speak)) as a possibility ? Has anyone replaced this pipe assembly, if so easy, hard, what am I going to bugger up ? (I have a spare car with a good engine (knackered gear box or associated electronics) All replies gratefully received but it ain't normal fuel starvation - she accelerates like (expletive). Doesn't normally stall - did a couple of times in the past but I put that down to me changing things and not bleeding her properly. Pipe assembly thingumy attached -no it's not fails claiming file size too big (17.1Kb ??) - sorry