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Could be a "fuel pump relay" or ford equivalent that converts ECU fuel output demand signal to power to the fuel pump. To test jump direct positive to fuel pump and see if you get pressure at the rail. If you get pressure, that may be part of the problem. If not enough pressure (but measure) you may have a fuel pressure regulator or ford equivalent issue.
Check to make sure it is getting fire. You can also hook a pressure gage to the fuel check valve should be near the fuel rail to see if you are getting a good constant fuel pressure. usually fuel problems will let the truck start but not stay running unless you are getting no fuel at all if thats the case it usually means your fuel punp is not working. with your key turned on your fuel pump should be running you can just bleed the check valve to see if you are getting any fuel pressure at all if you are getting none check the fuses and see if you are getting any power to the fuel pump if the fuse is blown then you can try to replace it if it blows again the fuel pump is bad or you have a short somewhere most likely.
Sounds like possible electronic fuel pump failure. when fuel pump gets weaker as the fuel level gets lower . Some folks have a tendency to run their vehicle low on fuel which will eventually shorten the life of the fuel pump.
In some cases you can fill the car up with fuel and the problem will go away in the early stages of the fuel pump problem. The problem comes back as the fuel supply in the tank gets lower. This is one sign.
i have an 88 chevy truck, not getting gas to come out of injectors.. getting gas all the way through the lines all the way up to the tbi but not out of injectors. pressure gage check done! new fuel regulator done! . u can put gas in the throttle body and it fires right up.??
Dear Ron, you have replaced fuel pump and fuel filter. You have checked the fuel pump relay. Still no fuel in rail. Try bypassing fuel relay with jumper from batt to fuel pump. If o/k then check computer for ground to relay. This system uses a relay that is operated by the computer that supplies a ground for the relay to operate. The wire color is green,16 gage. If the ground is not available then "no fuel" Check this with a test light. Key on and crank apply test light to ground wire and other end of light to ground. You should hear relay click and get fuel. If this checks out you will need to replace computer or get creative with rewiring the relay so it works without computer input. Good luck Moe
You likely have a bad lift pump in the tank. You are working on the fuel pump on the fuel rail right? This vehicle has two fuel pumps one low pressure and one high pressure.
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