s50 help

[bigbhpwannabe]

as above a friend has the engine fitted too a e30 b20 with standard fuel pump but wont start ,will start with insta start thought, surely it should start with that fuel pump ?

[UweM3]

you need to give much more details than this I am afraid. Hows about the EWS?

[bigbhpwannabe]

engine from a 1996 car, as said it will fire up for a few sec with insta start spray , doesnt smell of fuel but is sparkin ,so just want to rule out the fuel pump ,thanks for the reply
gary
just poped round there ,and there is other issues

[UweM3]

ok I am trying again.

Has it ever run?

[bigbhpwannabe]

ok I am trying again.

Has it ever run?

yes it has run in an e36 m3 ,so what has been put in the e30 is a running package from that car ,bar the fuel pump . the wireing side of things has been taken from the m50 sticky thread ,i take it that this is the same ? thanks gary

[jmc330i]

1996 will be a 3.2 evo, so it needs a 5 bar fuel pump, not the 3 bar pump in the E30. It might start with the E30 pump, but its not going to do it any favours.

The M50 wiring is not the same as the S50 wiring. Unless you have followed the S50 wiring info, that would be the first port of call for the problem.

Has it ever run in the E30?

[bigbhpwannabe]

1996 will be a 3.2 evo, so it needs a 5 bar fuel pump, not the 3 bar pump in the E30. It might start with the E30 pump, but its not going to do it any favours.

The M50 wiring is not the same as the S50 wiring. Unless you have followed the S50 wiring info, that would be the first port of call for the problem.

Has it ever run in the E30?

ok i am a dip shit the car is a 1995 ,is deff a 3l s50 , think the oramorph is gettin too me lol

[jmc330i]

ok i am a dip shit the car is a 1995 ,is deff a 3l s50

In which case the E30 fuel pump will be fine.
A 1995 3.0l will have EWS, so there could be an issue there, but we still need more details.


Has the engine ever run in the E30?

[bigbhpwannabe]

ok i am a dip shit the car is a 1995 ,is deff a 3l s50

In which case the E30 fuel pump will be fine.
A 1995 3.0l will have EWS, so there could be an issue there, but we still need more details.


Has the engine ever run in the E30?

hi thanks for the reply ,no it has not run in the e30 before ,it does have ews ,we do have these parts from the e36 m3
ignition barrel
ignition key
the ecu that that was in the m3
with these parts is it possible to to wire them together somehow ? thanks gary

[UweM3]

ok i am a dip shit the car is a 1995 ,is deff a 3l s50

In which case the E30 fuel pump will be fine.
A 1995 3.0l will have EWS, so there could be an issue there, but we still need more details.


Has the engine ever run in the E30?

just to update me, why does the 3.2 don't run with the E30 fuel pump?

The pump doesn't matter for the pressure, that's down to the FPR. I know plenty of E30 M3's running the pump with 5 bar.
Maybe the AMOUNT of fuel the E30 pump suplies isn't enough but the pressure shouldn't be a problem.

[jmc330i]

hi thanks for the reply ,no it has not run in the e30 before ,it does have ews ,we do have these parts from the e36 m3
ignition barrel
ignition key
the ecu that that was in the m3
with these parts is it possible to to wire them together somehow ? thanks gary

Ignition barrel is of no use, you do however need the antenna ring that goes round the barrel where you put the key in - this can be from any EWS equipped E36.

The ignition key and ECU must be from the same car (which you have), but you also need the EWS control module from the same car - the igniton key, ECU and EWS module are all matched together.

just to update me, why does the 3.2 don't run with the E30 fuel pump?

The pump doesn't matter for the pressure, that's down to the FPR. I know plenty of E30 M3's running the pump with 5 bar.
Maybe the AMOUNT of fuel the E30 pump suplies isn't enough but the pressure shouldn't be a problem.

TBH mate, I dont know. I do know that my S50B30 runs fine with the fuel pump and FPR from my E30, because they are both 3 bar systems.
The S50B32 runs a 5 bar system, and everyone I know (including those on here) who runs a B32 has got an uprated pump (or the M3 Evo pump) to cope with 5 bar. I understand what you are saying, but if it was just a case of changing the FPR and keeping the E30 pump, everyone would of done that.

[ian332isport]

just to update me, why does the 3.2 don't run with the E30 fuel pump?

The pump doesn't matter for the pressure, that's down to the FPR. I know plenty of E30 M3's running the pump with 5 bar.
Maybe the AMOUNT of fuel the E30 pump suplies isn't enough but the pressure shouldn't be a problem.

Uwe,

I believe pressure is just a function of flow against a restriction. If the engine consumes (injects) fuel at a rate higher than the pump can supply, the pressure will drop.

I know someone who ran an S50B32 on a standard pump (in an E36 Compact), and found that it leaned out at the top end because the pump could not supply enough fuel. A standard pump will be fine for general driving around, but when you regularly visit the upper rev/load range, it can't handle it. He had no problems after fitting an uprated pump.

Ian.

Ian.

[bigbhpwannabe]

thanks for the reply jmc330, we dont have the ews module from that car , so what options are there to get round this? i have seen all the bits needed on e-bay for about 350 ,theres gotta be a cheaper option surely?

[penton08]

a ecu from a non ews equiped car would solve your problem. or big bavarian on here has my old ews set up, drop him a pm.

[jaistanley]

If it is an S50B32 there is no short answer I'm afraid, though I believe there is a german company that can disable it. An S50B30 can have the ECu from an earlier car put in there to get around the EWS I believe..

Jai

[UweM3]

If it is an S50B32 there is no short answer I'm afraid, though I believe there is a german company that can disable it. An S50B30 can have the ECu from an earlier car put in there to get around the EWS I believe..

Jai

please PM me for EWS removal.