METALBEAST

Just as I had tracked down the starter problem with my car shown here in this thread.

https://www.camaroz28.com/forums/sea...archid=2744195

Now another problem has cropped up.

The car is a 1997 Z28 M6, newly rebuilt 355 bottom end, LE2 top end, new Delphi 37 lb/hr injectors, new Racetronix 255 lph fuel pump & wireing harness, new Fram Fuel Filter, new NGK TR55 plugs, new Opti, new Taylor Plug Wires, new ignition coil & ignition module, Pacesetter LTs, Moroso CAI, Trick Flow Intake Elbow, BBK 58mm TB, LE ported Intake, new knock sensor, new GM LT4 Starter, Spec 3 Clutch, new TPS, new IAT sensor, summit EWP, new battery. Thats EVERYTHING that has been replaced.

I have had a problem getting my car to crank. This weekend I tried to start the car. I turned the ignition over to prime the pump. I heard the pump come on as well as the EWP. I then turned the key to start the car. Car turned over easily, car started for approximately 1 second then died. I tried turning it over several times. The car would try to start but would never stay cranked. Frustrated I decided to step away from the car. I pulled the battery & put it on 2 amp trickle charge. The gas tank had approximately 5 gallons of fresh 93 Octane from the local BP.

Flashforward to Monday. I bought some more gas. Added approximately 4 gallons more of 93 Octane from the local BP for a total of 9 gallons. I hooked up the freshly charged battery, got into the car turned the ignition over (heard the fuel pump & EWP come on) I then tried to crank the car. Car fired right up for approximately 2 seconds then died. Tried several times to crank it again but the car would not crank. It sounded a few times like it wanted to crank then nothing. I decided to check the fuel pressure, could not find my fuel pressure gauge so I had to go buy another one. I removed the cap on the Schrader valve. I pushed in on it saw that there was indeed fuel at the valve. Screwed the new fuel pressure gauge up to the valve, put the gauge where I could see it from the car. Hooked the battery up, climbed in the car & turned the ignition to prime the pump. I heard the pump come on, but the fuel pressure gauge did not move. I did this a few times with the same result. I went back to check to see if I had possibly not screwed the gauge on correctly. I checked & it was screwed on as tight as I could get it. I tried again to prime the pump. Heard the pump come one but no fuel pressure on the gauge. I tried to start the car several times. The car would turn over, try to start but nothing. The fuel pressure gauge never moved. I pulled the vacuum line off of the fuel pressure regulator. It was not wet or soaked with gas.


I am a bit perplexed. This is a brand new pump. When I installed the pump I completely removed the tank, removed all of the old fuel, washed it with hot water & soap. I meticoulously vacuumed out the water, & dried the tank down. It was spotless & dry when I put the pump back in the tank & installed it. The car did start twice but immediately died. Any thoughts? What else should I check?

SnakeSkinner28

well it doesnt sound like its a fuel issue if you have pressure and gas is reaching the fuel rail, sounds like the pump is good...i would check your ignition coil and module even though you replaced them, did you get a new GM or remanufactured one? if those check out then I would look at the motor, could have a valve problem, ...who did the final assembly, you can always take it back to them?

METALBEAST

There is no fuel pressure. There is fuel getting to the rail but the fuel pressure gauge shows no readind when I primed the pump (heard the pump come on).

camaro1fastz28

pump defective or a kinked line when u put the tank up

IPrice

I'll be he's right....sometimes when you drop them tanks, the lines get hexed up and kinked....it could cause problems downstream.

That fuel should spray up with a little force after cranking a few times. If not, then something is keeping it from making it up to the rail with pressure.

Double check your lines and connections to the new FP.

Good luck and stay with it,
Ivan

METALBEAST

Thanks. A friend of mine said he had the same problem with his truck. He could hear the pump come on but no fuel pressure. Turned out a line came loose in the tank on the pump. I am going to make a trap door to get to the pump & check the connections.