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Matt, Engineer
Category: Ford
Satisfied Customers: 20365
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Crank but will only drive for short time and then act as it

Customer Question

Crank but will only drive for short time and then act as it getting no gas
JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual?
Customer: Yes gas hog slow but start
JA: What is the model/year of your Ford?
Customer: F350 1997
JA: Are you fixing your F350 yourself? What have you tried so far?
Customer: Test fuel pump change fuel filter change gas filter
JA: Anything else you want the mechanic to know before I connect you?
Customer: That's it
Submitted: 14 days ago.
Category: Ford
Customer: replied 14 days ago.
Engine like fuel just cut off but if restart it runs again for short time
Expert:  Matt replied 14 days ago.


This sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank.

1st thing to try is to remove the fuel filler cap and then flick the ignition on whilst listening for the brief ‘buzz’ of the pump

If the connections to the pump are corroded or damaged then the pump could stop at any time or could not be running at full speed. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse,

Ideally measure the pressure at the injector rail (should usually be around 3Bar / 45psi +) and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure.

You can also get this issue with contaminated fuel , if there’s water or dirt in the tank then either the petrol floats on top of the water or the filter sock on the pump is choked up – so if the other things check out then I’d consider pulling out the fuel pump and cleaning the filter sock