New motor, no start, HELP
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
New motor, no start, HELP
Just hooked up my new motor in my '86..... lt-1 manifold conversion
it cranks over, there's spark, and there's pressure to the fuel rails, but the plugs are bone dry so i don't think the injectors are firing
does anyone have any ideas?
could the oil pressure switch have anything to do w/ this?
i dont have it plugged in, but if i jump the terminals on the plug I hear a hissing sound but the injectors still dont fire
it cranks over, there's spark, and there's pressure to the fuel rails, but the plugs are bone dry so i don't think the injectors are firing
does anyone have any ideas?
could the oil pressure switch have anything to do w/ this?
i dont have it plugged in, but if i jump the terminals on the plug I hear a hissing sound but the injectors still dont fire
Burning Brakes
Joined: Jan 2005
Posts: 1,217
Likes: 0
From: Augusta GA
From what I understand the injectors are supposed to pulse in sequence with the cylinder thats about to fire. So it would seem to me that either a bad conection or a computer problem. I am sure someone will chime in who has more knowledge and give a firm answear
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Originally Posted by DrEvil11417
Just hooked up my new motor in my '86..... lt-1 manifold conversion
it cranks over, there's spark, and there's pressure to the fuel rails, but the plugs are bone dry so i don't think the injectors are firing
does anyone have any ideas?
could the oil pressure switch have anything to do w/ this?
i dont have it plugged in, but if i jump the terminals on the plug I hear a hissing sound but the injectors still dont fire
it cranks over, there's spark, and there's pressure to the fuel rails, but the plugs are bone dry so i don't think the injectors are firing
does anyone have any ideas?
could the oil pressure switch have anything to do w/ this?
i dont have it plugged in, but if i jump the terminals on the plug I hear a hissing sound but the injectors still dont fire
GM EFI is pretty simple. shouldn't take long with the propper tools. Once you've got the first batch of testing (noid light, injector power check, EST ref to ecm not broken, etc) I can suggest the next phase of testing. A scanner would help though.
-- Joe
