holley505

iTrader: (1)

Okay... I posting up for a buddy. I am Carb LSX guy...so I am not pro or even understand much with the GM FI system. The harness is aftermarket not sure the brand.

Car 69 Camaro with 6.0 Iron block with AL LS3 heads and LS3 intake and fuel rails -guessing a Camaro intake and rails. T-56 tranny.

The computer VATS was reset so we can rule that out. The injectors have 12 volts... the fuel pump works and we have 60psi at the motor. Motor spins over strong.

The Bad...
Plugs are dry.
Even when we spray fuel in the intake through the throttle body it doesn't start?

Any ideas on where we are start? Thanks!

2xLS1

iTrader: (25)

Pull a plug wire off a plug. Stick your pinky finger in the plug wire boot and put your other hand on some bare metal. Crank the engine over and report back what happens.

LLLosingit

iTrader: (4)

DO NOT DO THAT!

Why would you tell someone to do that? They can get a severe shock and if the person should happen to have a medical condition they could end up in the hospital or worse.

If you want to check for spark you can just leave a spark plug on the end of the wire and have someone turn over the engine. Or go buy a cheap spark tester that goes between the spark plug and wire.

LLLosingit

iTrader: (4)

I would test for spark but If plugs are dry I would guess it's a fuel related problem or possibly a lack of or bad ground.

Do you have a tach hooked up? Is it reading as you turn the engine over?

2xLS1

iTrader: (25)

You're no fun. I'm going to guess you don't check 9V batteries by touching them to your tongue. Relax. I was just telling him to check for spark since he said it didn't even hit when they sprayed fuel in the intake. And if he would actually test for spark that way then, well...............

I suspect he has both a fuel and spark problem.

holley505

iTrader: (1)

Lol. the screw driver trick works for spark....we will check that but i believe it's fuel. Can't even smell gas. Just think injectors are not firing. Checking ground is a good idea... but we see 12 volts on the injectors.

holley505

iTrader: (1)

Yea it sparks good. I checked the grounds but can check again. And I have 12v to the injectors with the switch on. Bad injectors?? I hooked up a scanner and it shows rpm when cranking.

2xLS1

iTrader: (25)

Go rent some noid lights from the parts store. The PCM pulses them with grounds. Is the 12V there when cranking? Can you post the tune file so we can be sure it's not VATS? Do you have a data logging scanner to see if the PCM is commanding injector pulse?

holley505

iTrader: (1)

yeah...he rented a NOID light last night ..Got nothing when cranking. And we don't have a copy of the tune. Maybe we need to tow it back to the tuner? Any ideas before we tow??

thx guys...

holley505

iTrader: (1)

Thanks Guys ...here is a pic of the car!

holley505

iTrader: (1)

No other thoughts?

Looks like he needs to call the tow truck.