Question about 1991 Ford F150
Truk been sitting for awhile put gas in crank it ran good switched tanks it ran out of gas it started shaking wont pick up speed
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Posted on Jan 02, 2017
I suspect the fuel pump has stopped working, check the fuel pressure or listen to the noise it makes by taking off the gas cap and listening for a humming noise when the key is turned on, this will stop after a few seconds.
Posted on Nov 07, 2008
Guide to starting a dead horse!
1- Spray a little starter fluid down the carbuerator. If it tries to fire, your timing and ignition is probably OK. This could indicate a carb or fuel pump problem.
2- If it doesn't fire, check out the points, condenser, coil, distributor cap and rotor. Look for condensation inside the cap. Check that the high tension wire from the coil to distributor is in good shape and not touching the engine or any brackets,etc.
3- Verify that your timing is correct. You may have a timing train problem (Worn or broken).
4- The distributor may have come loose and changed positions. Check for proper timing.
5- It may be a compression problem. If it has set long enough for the oil that coats the cylinder walls to drain down, you won't have enough compression to allow firing. Check your compression and if this seems to be the case, remove the spark plugs and squirt a little Marvel Mystery oil, or similar light weight oil into each cylinder. When it starts, it will smoke for a few minutes, but that will go away.
Hope this helps and if not, get back to me.
Have a super day!
Posted on Feb 20, 2009
change the filter first. IF the pumpwas bad it wouldnt start at all. It could be going bad but the only way to really test it is to pull your gas tank and at that rate you may as well replace it.
you could have a clogged injector causing the lack of fuel as well. you can try injector cleaner, Lucas is my personal preference I use it at every fill-up. 4-6oz per tank of gas depending on your tank size.
Posted on Oct 15, 2009
The fuel pump relay and the oil pressure switch as well. The oil pressure switch runs power to the fuel pump when you first start it
When the oil pressure reaches operating range the relay takes over
They are both inexpensive so replace both of these parts to be safe and kill two birds with one stone. If one goes out the other will soon enough
Posted on Mar 27, 2010
take a look at the two relays on the top of fender sheild, these go bad alot,one is for the ecm and the other for the fuelpump,start there and also you may want to check to see what is not happening like spark or fuel
Posted on Jun 09, 2010
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