350i New Owner

[CJD2005]

Hi All, I have now become the owner of an 85 350i wedge, its been laid up in a barn for a number of years, the previous owner (friend of the family) has become ill so I have bought it to try and get it back on the road. I have previously owned an S1, so I am used to the frustration of owning a TVR!

I'm sure I will be on here for some advice, I put fuel in it two days ago, new battery and its actually trying to start but won't! So the numerous checks begin........

Chris

[CJD2005]

Very good advice, thankyou. Just a quick one on testing the fuel pump when your on your own, what's the simplest way?

[CJD2005]

Thanks Nige, I did read about that on some really old posts, I will give that a go. If the pump doesn't run I should be able to check voltage at the pump to confirm if pump is at fault or not.. If the pump runs what does that mean, clearly something is not signalling pump when trying to start.. Sorry I am reading up on the fuel system to get my head around it.

[CJD2005]

Best place to buy fuel pump, many on ebay?

[CJD2005]

Hi All, so I pushed the flap at the AFM and the fuel pump runs, however still can not get started, I followed some of the checks on the wedge epistles and I found a difference on pin 10 of the ecu plug, when disconnected and ignition off I get 12V anf with ignition on I get 0v, is this normal?

[CJD2005]

I did disconnect the fuel line at the injector rail and although I have not checked the pressure fuel was flowing when pump running.

[CJD2005]

Yes has sat a long time, will try that next thanks all!!

[CJD2005]

So.... Tried the damp start, no joy... Injectors are not opening, however if I stick 3v across them I can hear them open and close, so is not getting a signal.. I've tested most things, I'm getting 12v to the injector plugs before cranking. Resistor pack tests out OK.

However as mentioned previously I'm still getting 12v to pin 10 on the ecu plug when ignition off, and 0v when ignition on.??

I'm looking to get the ecu checked out as I don't know what state its currently in.. Am I missing something simple, quite happy to have ecu checked for piece of mind..

[CJD2005]

The fuel pump primes when cranking on mine, and pressure is great. Cold start injector not working also

[CJD2005]

CJD2005 said:

CJD2005 said:

The fuel pump primes when cranking on mine, and pressure is great. Cold start injector not working also

the left bank of 3 relays pektron down over I believe are the ones in question, looking at the wiring configuration underneath

[CJD2005]

Thanks for all the info, apologies being new to this its taking time to sink in, will source a new relay, the injection relay I take it is the same as the relay labelled "main relay" assume these are easily available?? Many thanks again

[CJD2005]

[CJD2005]

Great thanks so much...

[CJD2005]

New relay ordered, will let you know how it goes.. Thanks all..

[CJD2005]

I have the relay, will fit it today fingers crossed!!! I can then finally get her home! Will update you later...

[CJD2005]

2 year old not sleeping!

[CJD2005]

So fitted relay, and confirmed power at pin 10 with ignition on. Could here all injectors click when rotating throttle, though this is great, Tried to fire up and it did but was running dreadful and stalled. With limited time I checked timing, and I found that the rotar arm was pointing in the opposite direction to what I originally believed to be TDC, So changed all leads around knowing in my head this was not going to work and didn't, however when checking the rotar arm position again it had changed back to its original position. Now I am very tired and need a rest, I think it is possibly a timing and fueling issue. I Checked one plug and did not seem wet so could be an injector problem, I will take gauges on my next visit to confirm all are operating! Any thoughts on rotar arm,

[CJD2005]

Yes I have just realised what I have just said about rotar arm!!!!!

[CJD2005]

Yes it is great news and thank you for your advice, at least its moving forward, just needs more tweeks!

[CJD2005]

Cheers Keith, yes I think the timing is definitely a must to get right by the sounds of it, I have put 5 litres of fresh fuel in it, and changed filter, however I'm going to use my gauges to check the pressure drop at each injector to confirm fuel is passing, but thanks for the list, I will be going back over Xmas to hopefully get it going, so will let you know. Have a good one..