my 86 crown vic want stay running i changed fuel pump but for some reason when the pump is hooked up it want start but if i unplug the pump it a fire up an run for a lil bit i need help.


Asked by mrgist27 Jun 18, 2013 at 09:30 PM about the 1986 Ford Crown Victoria

Question type: Maintenance & Repair

2 Answers

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have you looked at your fuel pressure regulator at all, it is a diaphragm with a vacuum connection to it, on or just before the fuel rail...perhaps this is disconnected and givin' too much pressure....those butyl rubber vacuum hoses are cracky and leaky too~ replace with silicone vacuum lines~


Did you replace the fuel filter and FP relay also? Check the low oil pressure switch and check the inertia switch both of them can really give you a headache.

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