Ok so my 1998 Ram 1500 5.2L started up fine a few months ago. Had bad gas in it but still started. Went to start earlier this month and couldn't get gas past the injectors. Thought i may be the fuel pump so I replaced it and started trouble shooting from there. So far have checked all fuses, relays, wires, changed fuel pump and cleaned fuel tank and lines, changed crankshaft sensor, pulled and cleaned injectors and fuel rail, and checked the injector cables to make sure the computer was grounding them correctly and I was getting power to them. Please help me. I don't want to have to tow this to a mechanic to fix something that I am probably just overlooking.

 

Try pulling the fuel line from the fuel rail and crank it over. If you got fuel there, and you did everything else, I'd say Take a good look at the PCM, and try getting codes from it. If fuel doesn't come out, I'd definitely think there's a blockage somewhere... Did you also check the cam sensor?

 

Bottom line, gotta have fuel and spark. Check fuel pressure...should be 45 to 50 lbs. Then check to see if you have spark.

 

Does the pump come on for 3 seconds when you turn the key to the on position? From the post im guessing yes but want to make sure.

 

I have checked the fuel lines and rail. I have pressure. I can get the truck to start if I put fuel in the throttle body. It dies once the fuel is gone. I tried the key trick to get codes and got nothing. I changed the crank sensor. Have not checked or seen a cam sensor. The best I can tell is that the fuel is simply not getting passed the injectors. I have used a test light and checked the wires and am getting power and ground on them. I just don't know what else to do.

 

Have you checked fuel pressure with a gauge. You can have fuel in the line but without the right pressure injectors won't deliver enough fuel.

 

Getting injector pulse?

 

+1 on hey you. I'm slippin today. lol I am going to blame the fiance. She decided I should test all of the mixed drink recipes she is coming up with for a party tonight. Sounds like a good problem to have right? Ugh...not so much.

 

Yes I checked the injector pulse. As for fuel gauge, I do not have one but when the pressure release valve is pressed in I have fuel squirt clear out of my engine compartment.

 

10 PSI will be enough to hit the bottom of the hood, but, not enough to run the engine. If you are getting injector pulse, and the truck will run for a few if you dump gas into the throttle body....... that sounds an awful lot like a failing fuel pump to me.