melsplace6

Car was running fine till it started acting like it was starving for fuel. Now it will start for about 3 to 5 sec. It's a 3.1. Has a new knock sensor, fuel pump, filter, tps, iac and fuel pressure is constant at 47 psi. Thinking of checking injectors with noid but that only tells me they are getting a signal from ecm. Will probably pull injectors and have tested. I understand if they are not working properly that the ecm can't determine what kind of signal to send (rich to lean). Or , could it be the fuel regulator which is part of the whole fuel rail.
Any other Ideas?

Guest47904

If the pressure regulator were defective you could have the wrong fuel pressure. So is it in range or not?

You can tell if the injectors are actually opening by lifting the fuel rails with the injectors still connected and see if they are squirting when someone else turns it over. Or, simply squirt fuel in the intake and see if it fires up. If it fires by priming but not on it's own, it's a good chance the injectors aren't squirting. But I doubt that's your problem.

melsplace6

fuel pressure is where its supposed to be, 47 psi. I pulled the plugs and they where all fouled. Put new ones in and it fired up and ran for a minute or two and then died. Back to square one. Checking ignition module before I pull injectors. Starting to get iritated, not my first rodeo, miss the simpler times.