problem with fuel injection
i have a 1996 ford f-150 302 engine ! it,s burning lean and i have trouble starting it in the morning ! it acts like it,s not getting enough gas for it to start up ! would the fuel regulator cause it not wanting to start after its been sitting a long time? it turns over good but it takes a long while before it will fire up but once it starts it,s okay until it sits awhile then it has trouble starting again ! i changed the plugs, plug wires, cap and rotor and fuel filter ! i am thinking about changing the regulator to find out if that,s the problem ! thanks guys !
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Before you spend anymore $ why not consider trying this ?
When the vehicle has sat a while, turn the ign switch to on ,then off, then on maybe 2-3 times then go to start it. If that corrects the delayed start problem there could be a defective check valve in the fuel pump module that is supposed to prevent fuel drainback to the tank. Let us know if this helps eliminate the problem. |
Originally Posted by hanky
(Post 72691)
Before you spend anymore $ why not consider trying this ?
When the vehicle has sat a while, turn the ign switch to on ,then off, then on maybe 2-3 times then go to start it. If that corrects the delayed start problem there could be a defective check valve in the fuel pump module that is supposed to prevent fuel drainback to the tank. Let us know if this helps eliminate the problem. |
Does the hard start happen regardless of which tank you happen to be pulling fuel from?
I don't believe the pressure reg is the problem, but I have been wrong before, lost count. There may be a problem with the reservoir assy that all fuel from either pump must pass through. If you could get your hands on a fuel pressure gauge it would help to confirm if you really have a fuel problem or something else is going on. |
Just my two cents: I agree w/Hanky; the lean start is probably happening becuase the fuel pump can't/isn't making the required pressure; they did have the check valve in the tank w/the pump, but it's replaced together.
And even if you suspect the regulator, which is completely possible, you'd have to use a fuel pressure gauge to test it; it probably takes a while to build up. And even with the gauge connected, you have to plug the return line to see if the pump CAN produce the pressure. |
Originally Posted by bandit1948
(Post 72689)
i have a 1996 ford f-150 302 engine ! it,s burning lean and i have trouble starting it in the morning ! it acts like it,s not getting enough gas for it to start up ! would the fuel regulator cause it not wanting to start after its been sitting a long time? it turns over good but it takes a long while before it will fire up but once it starts it,s okay until it sits awhile then it has trouble starting again ! i changed the plugs, plug wires, cap and rotor and fuel filter ! i am thinking about changing the regulator to find out if that,s the problem ! thanks guys !
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hey HANKY ! DO YOU SUPPOSE THE GAS CAP IS NOT HOLDING THE PRESSURE IT NEEDS ?
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Mr bandit1948,
Any pressure in the fuel line system is produced by the fuel pump(s). Since the problem is present with either tank/pump you are going to be chasing a wild goose without using a pressure gauge to either confirm or rule out a possible fuel problem. There is always the possibility of a non fuel problem so I would again ,suggest get a fuel pressure gauge and check the system properly then you will know for sure where you stand. |
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