Need help m50 NV 92, crank no start

[Matt-B]

Motor is cranking and not starting

I have fuel to the front of the rail, the spark is mad crazy, so I think my injectors are not opening?
I cleaned ground at end of rail and reinstalled, popped 1 time, then nothing.
Jumping it from another car, did nothing, so tomorrow Im going to swap ECU's and MAF...

ECU was from a running car, but MAF, I am not sure....

opinions, thoughts, questions?

thanks

ps: Im also going to switch cam, and crank plugs...would things like ECU, MAF, and Crank Sensor, make injectors not open?

[ahriley91]

Before you go buy some more parts, try switching the fuel lines. If might not work, but it's worth a shot.

[Matt-B]

front fuel line, i popped off, into bottle, filled bottle, its the right line

[Farbin Kaiber]

It will run like shit with a bad MAF. That means it will run.

Take off an injector connector, grab two pieces of wire and a flashlight bulb, make a ghetto test light and see if the injectors are getting pulse.

[Matt-B]

doing that tomorrow yea, thanks Farbin

[e30s50dan]

Spray a little starting fluid in the intake...behind the maf. If it try's to start,chase the fuel issues

[dirty30]

is your dme grounded?

are your cam and crank sensors on the wrong engine harness plugs?

[Matt-B]

I heard, the DME does not need a ground, its grounded through harness, and Ill switch CAM and CRANK here shortly

[Farbin Kaiber]

lol.

[Matt-B]

put a ground on DME to strut tower, going to make a better ground here shorty, didnt not make a difference, going to buy a fuel pressure gauge soon

FML, why cant a swap go off with out a hitch, everything is from a running car

[Jand3rson]

put a ground on DME to strut tower, going to make a better ground here shorty, didnt not make a difference, going to buy a fuel pressure gauge soon

FML, why cant a swap go off with out a hitch, everything is from a running car

It doesn't matter if it's from a running car. You've got something hooked up wrong/backwards/not at all somewhere. Just have to find it.

[samiam3356]

Resistance on the cps should be in the low 500's. Check that. Large vac leak?dme is grounded on the shock tower btw.

[Matt-B]

it was ground down below by motor ground, i can ground on strut tower, its wanting to start, new plugs, getting spark, getting fuel, going to test fuel pressure here shortly...


if my FP, is not high enough, could that be a FPR or pump? pump is about a year old, FPR was on running car when motor came out

[Farbin Kaiber]

I don't think it's the pump. Or the FPR. I think something is still plugged in the wrong connector. Check the Wiring Diagram for the harness you have, and make sure each connector is where it's supposed to be. There are only a few you could mess up.

[e30s52]

Have you checked the CPS yet?