M50 wont start

[Anthony_vw]

Hi guys,

I have a E30 swaped with a M50, engine cranks but doesn't fire. My engine is in it cranks but no spark or fuel. I have 12v to my injectors and wen i put a ground my brw/grn on my relay pump goes on. I have 12v to my dme on pin 26 and 56 and i have all my grounds the 2 on the shock tower and the one on the right engine mount.

My DME is a silver label the finishes by 413 and its grounded. Ive done alot of research on this forum i took all the info for the swap here so i know we can figure the problem out.

here is my piout for my c101 and x20 connectors

E30 pin E36 pin
Blue 1 blue 25
brn/wht 4 brn/vio 12
brn/gr 5 brn/grn 23
grn/yel 6 grn/wht 22
grn 7 grn 21 ( both wires are connected) small and big
wht 8 wht/blk 24
blk 9 blk 20
wht/blu 11 wht/gr 19
brn 12 gray 8
grn/vio 13 grn/vio 13
blk/wht 14 blk/wht 14
blk/grn 15 blk/grn 15
wht/blk 16 wht/vio 17
blk/yel 18 blk/yel 18
red/yel ABS connected to a red/wht fro main relay.

So thats my pinout another thing my harness was automatic i removed everything and I have a brn/blk wire left I read to connect it to a red/wht wire?

I dont know were to look no more!!!:-?

Thank you

[cormier]

Re check your relays. Will it fire if you jump them (imitating on positions)? You said your pump turns on when jumped but not using the normal relay?

[Anthony_vw]

Wen i give a ground to my brn/grn on my gas pump relay pump goes on but still dosent start.

[mtlbloodshot]

You need a red label 413.. The silver label comes with a EWS system. Either you get a EWS DELETE chip that removes it or a red label 413.

[hooken m]

You need a red label 413.. The silver label comes with a EWS system. Either you get a EWS DELETE chip that removes it or a red label 413.

this as well. i have a silver label and got my ews deleted by turner since it had turner stg3 tune already

but if you want a cheaper route and get a 413 red label. i actually have one for sale

[Anthony_vw]

ok so i need a E36 red label DME and has to finish by 413. And another question on my E36 harness how many wires are left unused i have 6.

[Anthony_vw]

I have another question about testing my cam and crank sensor. What is the best way to test them? I read that some guys inverted the plugs mine are male female so i cant mix them up?

[cormier]

You can test to make sure they ohm out properly with a meter. Which plugs are not connected? It depends on the harness

[Anthony_vw]

Ok so i tested my cam and crank sensor my crank gives me about 510 oms my cam gives me 0 oms. So i ordered one and im gonna install it this after noon and see if it still doesn't strart im gonna go pick up a red label dme.

[Anthony_vw]

So i received my cam sensor and it gives me 0oms to i changed ohmmeter and same thing.Someone has a idea why both of them are not giving me no reading?

[328ijunkie]

Cam sensor wont cause a no start condition

[Anthony_vw]

My cam sensor is good i back probed it ant its giving 5 to 0 volts wen engine cranking. My crank is good also I am getting +- 510 oms. I ordered a red label dme im getting it tomorrow I am just hoping that's the problem.

[e30austin]

Pretty sure that the silver label DME is your issue. However, I just had a very similar issue on an S52 car last week. Turns out one of the smaller starter wires was grounding out and not turning power on to the DME.

[Anthony_vw]

Can someone tell me if my c101 and x20 connections are correct?

[Anthony_vw]

So i got my red label DME car started for 30 seconds. I have spark and injectors open i check with a noid light. I hear the fuel pump wen i crank but i don't have pressure. I switched my lines dint change nothing. On my M42 i had a pressure regulator on the fuel rail i dont on my m50 can that be a problem? I blocked the return with a vise grip and still dint start.

Now im gonna put the gaz pressure gauge on the pump direct see if the pump is ok. I read that the pressure should be at 43 psi is that correct?