Need help m50 NV 92, crank no start

[Matt-B]

i put a known working crank sensor in, cam is brand new...

plugs are getting really wet, and when i pull a plug and dry off to check spark, it has good spark, wtf?



Also there is a tiny black wire coming from the Diagnotic Cap, 2 inches black, just snipped, its not in the mail look, tucked under rubber boot

[trackjunkie21]

i put a known working crank sensor in, cam is brand new...

plugs are getting really wet, and when i pull a plug and dry off to check spark, it has good spark, wtf?



Also there is a tiny black wire coming from the Diagnotic Cap, 2 inches black, just snipped, its not in the mail look, tucked under rubber boot

Your problem is that you are flooding the cylinders, the plugs are wet with gasoline correct? OR!! you have a really weak spark, Are the grounds good for the coils?

[Matt-B]

sanded the grounds, they were nice and clean, and sparking ok i though when i pulled a plug, plugs are brand new, and grounds seem to be ok


I pulled all plugs, and let motor air out for 30-40 min also

[trackjunkie21]

sanded the grounds, they were nice and clean, and sparking ok i though when i pulled a plug, plugs are brand new, and grounds seem to be ok


I pulled all plugs, and let motor air out for 30-40 min also

Even if they air out, when you put them in and crank the same amount of fuel is going to be dumped in ;) That and weak spark, will kill the spark completely, This was happening with my m42 this weekend.

[LJ851]

If you have fuel and a good spark, all you are missing is timing.

[Matt-B]

how can i adjust the timing? lol

[LJ851]

how can i adjust the timing? lol

Im not suggesting you adjust the non adjustable timing, only that fuel and a good spark at the right time generally causes an explosion and a running engine. (or at least some kick ass backfires)Did you have the cams out of the engine?

[Matt-B]

no, left head alone, someone told me to shop vac the cylinders?


EDIT: I did a stomp test, 1 short flash, 1 long, 1 short 1 longflash, not sure what that means

[LJ851]

If you think its flooded, remove the spark plugs, disable the fuel pump and the coils, open the throttle wide open and crank the engine for a while. This will clear the cylinders of fuel. It is also possible to gas foul the plugs and they wont work properly in the engine even though they will spark outside the engine.

[Matt-B]

so can i test plugs in car like via coil?

i have 6 spare s52 coils, i could use to see there not working or maybe a timing light on a coil wire?

[trackjunkie21]

so can i test plugs in car like via coil?

i have 6 spare s52 coils, i could use to see there not working or maybe a timing light on a coil wire?

If ignition timing was wrong, then you would be having backfiring and alot of other scary shit.

[LJ851]

If ignition timing was wrong, then you would be having backfiring and alot of other scary shit.

Not if it is 360 degrees out (crank rotation)

[Matt-B]

i did have 1 or 2 pops, and fire come out MAF...happened on a few M50s i have worked, after starting fluid went in....

I think someone might be coming over somewhat soon...So fucking discouraged, all i feel like doing is hibernating inside....

i have 113$ in bank, and am offering a local 100$ to get it running

[trackjunkie21]

I have no clue anymore, only possible thing is timing, or injectors stuck open.

[Matt-B]

yea, "hellzmindplaya" is coming over, helped get erics car running, maybe he can help me