Question about Cars & Trucks
No remove fuel cap put your ear close to open filler neck have some one turn on key you should hear a humming sound if not bump key then listen again it will only hum for a few seconds
Posted on Jan 21, 2013
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Posted on Jan 02, 2017
What you need to do is have an assistant turn the key on (not try to start, just turn the key on) while you have the gas cap removed and your ear down by the gas tank fill tube. When they turn the key on you should hear a whirl only for 3-7 seconds. If you hear nothing more than likely you will need to change your fuel pump. Attempt this test on several tries at different times several hours apart before you **** your tank out to give it ample time to relieve any fuel pressure that may be built up thus causing your pump not to respond. BUT, if you are not getting any fuel you are not getting any pressure built up so it should be making some sound. How many miles do you have on this vehicle? 9 times out of 10, sorry to say, you'll be replacing the fuel pump. It sounds like to me that you have thourouly checked every other possible thing. Good luck my friend. Let us know how you come out.
Posted on Mar 09, 2009
SOURCE: Ford F100 Fuel System
how hard was it to pump it by hand?Iwould be suprised if a mechanical fuel pump could be easily pumped by hand as the spring pressure required to hold the arm against the eccentric is considerable If its a cleveland or windsor you cannot pump by hand.I own a 1980 running a cleveland and found that if you put an electric pump as close to the fuel tank as possible and have a good original mechanical pump fuel delivery is no longer a problem.I had to do this as soon as i went to a 600 holley as the original pump was not able to supply sufficient flow.the electric pump doesnt have to be an expensive hi volume type,it only has to help to get fuel to the mechanicl pump
Posted on Oct 09, 2008
Evap vent solenoide is stuck closed. Start by replacing the valve and checking the hose to the valve for clogs...this is located between the cab of the truck and the bed of the truck on the driver side (can be seen if you look down through the crack)....If this doesn't work then check the fuel filler neck hose for kink or restriction this is the hose that goes from the gas cap to the fuel tank.
Posted on Aug 02, 2009
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