Hi there,

 

Could anyone please tell me the specifications on the External fuel pump for a 1985 320 I would guess its probably a Bosch just wondered what the flow rate was as need to replace mine also is that a fuel regulator bolted next to it?  any advise would be welcome

Many thanks

Hi Paul

Welcome to the Forum

Sounds like you have a Project on your hands, at that time I believe BMW used both Bosch and Magneti Marelli

Check www.realoem.com put the last 7 digits of your Vin into the search box (your model should be in the Classic section. Then check the Fuel Supply foe your pump and allied stuff once you have the part number google it to find the best price and delivery

Hope this helps

Dave

P.S If you double click the part number it should show a list of other models and alternates.

2 hours ago, Greydog said:

Hi Paul

Welcome to the Forum

Sounds like you have a Project on your hands, at that time I believe BMW used both Bosch and Magneti Marelli

Check www.realoem.com put the last 7 digits of your Vin into the search box (your model should be in the Classic section. Then check the Fuel Supply foe your pump and allied stuff once you have the part number google it to find the best price and delivery

Hope this helps

Dave

P.S If you double click the part number it should show a list of other models and alternates.

Hello Dave,

Thanks for the welcome and for the very useful information. Yes a bit of a project which was running fine but just died for no good reason LOL!!

I did the usual checks for spark and fuel and fuses. i have spark fuse is fine but I put a link wire on the pins 87b to 30 or 87 to 30 I have nothing. I managed to get under the car in the week and I could just about get to the wires due to where the car is parked at present and I had no continuity so I think it may be fault. Also internal pump check out ok

Seems you may have the narrowed it down but check the fuel pump relay as well as in my experience it is unusual for a pump to just die normally they mess about stopping and starting.

Good luck 

Dave

3 hours ago, Greydog said:

 

Thanks Dave its one of those 7 pin ones I will test with a multimeter but when in situ it does click in then straight out again but I would have thought that just running a link wire would prove whether the pump was faulty?

Anyway no harm in re-checking. Are there any other relays worth checking out whilst I am at it?

 

 

For the price of a Relay I would change it as a precaution. Remember a good deal of those relays and fuses will be more than 37 years old, so maybe another project working your way through with contact cleaner 🤣

Don't forget the Earth points when cleaning and checking continuity.

Dave

Thanks Dave rechecked relay again today and must admit not totally happy with readings so maybe worth replacing sadly though I cannot seem to find one at a reasonable price lol!!!

I did clean up straps and have been though with contact cleaner but will be glad when I have moved car to a more accessible place

I Does anyone have a copy of this workshop paget hey could ? I found this post whilst googling which has the exact same relay as mine but I can't quite read it and its not in my haynes manual

http://www.bimmerboard.com/forums/posts/1052466

 

Morning Paul

If you have the part number just Google it and see what comes up

Have you tried BMW for a relay ? They have a classic section and offer some excellent discounts to help people keep BMW classics on the road.

Also try Schmiedmann they are a BMW specialist that have a great reputation 

Dave

Hi Dave I have googled with little luck and I have just emailed Schmiedmann so maybe they can help