Question about 1994 Lincoln Mark VIII
I have a 1994 Lincoln Mark 8 and I get no fuel pressure at all with the key on but engine off... Ive found that it should be 35-45lbs. I do however get 35-45 lbs as I should when the vehice is running. Should I replace the fuel pump... Or could it be something else? Im told it has to be the pump but I believe it could also be an injector leaking or maybe possibly the incorrect or bad gas cap.. Can I rule either of these out?
It sounds like your fuel pump is bad. The fuel pump is located inside the gas tank.
Posted on May 02, 2013
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Posted on Jan 02, 2017
This is usually how it happens with Electric Fuel pumps. They either work or they don't. When you turn the ignition to on you should hear the pump engage and pressure up. If you don't most likely your pump is faulty. You mentioned that it did this after a freeze. It is possible that you have a frozen fuel line, Supply or return, will also cause this problem. The best you could do is move the vehicle into a garage and warm it up above freezing to allow the lines to thaw. A lot of time we get moisture build up in a tank without even knowing it. Cold fuel is supplied to the motor through the pump but the return line returns warm fuel and in a cold environment this will or can cause condensation to form in the tank and lines. Also bad fuel from a station will cause this issue. It doesn't take much with all the additives they put in fuel today. They sell fuel additive that will remove this moisture if that is the problem. try warming the vehicle up and thawing the lines. If this proves to be the issue you'll need to drop and drain the tank and lines to clear the problem or try a fuel additive to remove the moisture.
Posted on Jan 21, 2010
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