wont start any more

[dflowers16]

Went out and started my 2000 tahoe 5.3 ran for about 10- 15 minutes and then died. Started it back up and ran for a couple minutes at low rpms no surging and then died again. Started it a third time and I pressd the accelerator ans died instantly now the truck wont start at all. Cranks fine as I replace the battery last fall. Pulled codes for bank 1 and 2 lean, evap control system vent circuit malfunction, random/ multiple misfire (pending). Replaced all plugs (ac delco iradium) gapped to .40. Would the evap malfunction cause the truck not to start? Over the summer while going though a car wash a code for oxygen sensor would appear but check engine light would turn off by itself. Any suggestions?

 

[skbishop90]

Went out and started my 2000 tahoe 5.3 ran for about 10- 15 minutes and then died. Started it back up and ran for a couple minutes at low rpms no surging and then died again. Started it a third time and I pressd the accelerator ans died instantly now the truck wont start at all. Cranks fine as I replace the battery last fall. Pulled codes for bank 1 and 2 lean, evap control system vent circuit malfunction, random/ multiple misfire (pending). Replaced all plugs (ac delco iradium) gapped to .40. Would the evap malfunction cause the truck not to start? Over the summer while going though a car wash a code for oxygen sensor would appear but check engine light would turn off by itself. Any suggestions?

Sounds kind of like a weak fuel pump. There should be a test port on the fuel rail. Prime the pump(turn the key to on position a few times), the press the shrader valve see if there is any fuel pressure. Be careful and watch your eyes!

You can rent a fuel pressure gauge at your local auto parts store for next to nothing. Should be anywhere from 30-50 once fully primed.

 

[dflowers16]

Sounds kind of like a weak fuel pump. There should be a test port on the fuel rail. Prime the pump(turn the key to on position a few times), the press the shrader valve see if there is any fuel pressure. Be careful and watch your eyes!

You can rent a fuel pressure gauge at your local auto parts store for next to nothing. Should be anywhere from 30-50 once fully primed.

My friend pressed the valve and said some fuel came out. In the process of trying to remove the fuel filter as it is corroded and has never been changed (i have owned the truck less than a year). Tried to start it and it ran for a couple seconds today than stalled. Im thinking all the fiddling we have done to fuel filter might have loosed up some debris enough to get some fuel in to the motor.

 

[skbishop90]

My friend pressed the valve and said some fuel came out. In the process of trying to remove the fuel filter as it is corroded and has never been changed (i have owned the truck less than a year). Tried to start it and it ran for a couple seconds today than stalled. Im thinking all the fiddling we have done to fuel filter might have loosed up some debris enough to get some fuel in to the motor.

That is a good idea. Fuel filters are cheap and easy to replace. Try replacing it and then repeat your test. A little fuel will come out, but you need fuel pressure. PRESSURE being the key word. If you press the valve, it should force itself out. Not just dribble out. Again, a fuel pressure gauge can be rented for next to nothing from most auto part stores. That will give you a reading while your in the drivers seat without gas in yo face!.

 

[dflowers16]

Rented a fuel pressure gauge and not a single psi registered. Just make sure the the gauge was working we tested my buddies jeep and it registered 52psi so the gauge was working. What are some good fuel pump brands with the exception of ac delco which I cannot afford now.