fuel flow problem ?
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From: lewes ,delaware
fuel flow problem ?
hello there truckies,
new day new problem.i have an f-150 1987 lariat xlt fuel injected302.changed the fuel filter other day now periodicaly she shuts down in mid stride like it,s starving for fuel if i,m going fast enough she,ll pick back up but most times im on the side of the road cranking it a while until she starts back up.i have run it dry a few times(guages not working properly)but before i changed the filter that did, seem to be a problem.been told to drop tanks and check filter in bottom of tanks to blowing air back down feedlines any ideas i do have duel tanks switching unit seems to be working ok HELP!
new day new problem.i have an f-150 1987 lariat xlt fuel injected302.changed the fuel filter other day now periodicaly she shuts down in mid stride like it,s starving for fuel if i,m going fast enough she,ll pick back up but most times im on the side of the road cranking it a while until she starts back up.i have run it dry a few times(guages not working properly)but before i changed the filter that did, seem to be a problem.been told to drop tanks and check filter in bottom of tanks to blowing air back down feedlines any ideas i do have duel tanks switching unit seems to be working ok HELP!
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Joined: Jul 2003
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fuel flow problem ?
Well sounds like you could have gotten trash into the fuel line when you changed the filter. Also, you may want to investigate possible throttle positioning sensor going bad. Could be just coincidence that it happened along the same time you changed the filter.
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Joined: Jun 2003
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From: Melvindale Mi
fuel flow problem ?
Hey thor,, I was just wondering,,,,,,, are you sure you didnt put the fuel filter on backwards,,,,, you said you didnt have the problem until you changed the filter,, right?? 2o years as an industrial maintenance tech has taught me that if you do something and you imediatly have a problem,,,, goe back and undo what you just did.I Could be wrong but just a thought
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From: lewes ,delaware
fuel flow problem ?
thats one of the first things i thought of i,m a plumber by trade and you cant go wrong with direction of flow arrow 
->as far as fuel presure test good recomendation i did disconnect fuel filter and pump fuel into a can but i did not switch back and forth from front to rear while doing it.and not for an exstended time think chilton says i pint in 20 seconds.also i,m wondering if running it dry has,nt fouled up the fuel sox in the bottom of the tanks where the booster pumps are
anyway i think i,ll start with a full presure test and work my way back to the tanks any other ideas greatly appriciated.
->as far as fuel presure test good recomendation i did disconnect fuel filter and pump fuel into a can but i did not switch back and forth from front to rear while doing it.and not for an exstended time think chilton says i pint in 20 seconds.also i,m wondering if running it dry has,nt fouled up the fuel sox in the bottom of the tanks where the booster pumps are anyway i think i,ll start with a full presure test and work my way back to the tanks any other ideas greatly appriciated.
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Joined: Nov 2002
Posts: 9,987
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From: Memphis, TN
fuel flow problem ?
The only way to check the pressure is with a fuel pressure gauge attached to the port on the fuel rail on the engine. You can't tell by looking at the stream it sprays or how much it flows. Sears sells one for ~$20.
The fuel pump ALWAYS pulls from the bottom of the tank, so you didn't hurt it by running it dry once.
The fuel pump ALWAYS pulls from the bottom of the tank, so you didn't hurt it by running it dry once.
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