car broke down today

chope97

chope97

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after 6 months of sleep I charged the battery and took the 73 for a ride it rode fine plenty of pep put a smile on my face. As I was leaving the grocery store at the light the car choked and cut off. Some young guys helped me pushed the car back off the street into a parking spot. By coincidence a car meetup was going on around me. The young guys were excited for me to open the hood of this 2002 or whatever it is. Now come class time I opened the hood and pulled off the air filter with just two nuts and viola two carbs. They all leaned in as I showed the car's simplicity. We took a hose a loose and I cranked no fuel came out. I showed were the fuel pump was and took the output side hose a loose and cranked the car again no gas.. My daughter picked me up and took me home and I took the fuel pump off of my 71 with a 3.3. I put it on my 73 at the parking lot and after some cranking the car started and ran well. By the way the bad fuel pump was only 2 years old.
 
Stock mechanical pump?

I changed to a Pierburg electrical pump, and I carry a spare fuel pump with me. I also installed the pump where I can access it laying on the ground and installed a set of pigtails so the electrical part of it is easy.
 
I like this idea, I need to work out the wiring, Did you use the rear defroster wires? did you put a block off plate where the old pump was?
 
I ran a completely separate wiring circuit, but I had installed a distribution block under the rear seat for my Schrott Harness inertial reels. I also installed a Revolution Electronics fuel pump controller, which is wired like a relay (with a safety circuit that shuts off the pump if the engine is not running).

Here is a description of my setup:

Ohmess

Post in thread 'Adding a electric fuel pump, suggestions?'

I am running a pierburg pump just like this one - http://www.piercemanifolds.com/product_p/99009.131.htm - along with a Bosch (VW I think) inline filter installed in the trunk. This is the same pump Chris has pictured in his NK.

My pump is attached to the subframe using the rubber isolation mounts, near where Stevehose has his (https://e9coupe.com/forum/threads/final-word-on-electric-fuel-pump-for-carbs.22574/post-165257).

I've also installed the revolution electronics relay, which pumps three seconds of fuel to fill the bowls when first powered up, and will kill the pump...
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My pump is mounted on the right side, near the area where the tension strut attaches to the rear subframe using one of the bolts for the subframe mount. I had an area of crushed fuel line I removed there, and I was able to tuck the pump up where it is relatively well protected. If you look in the thread I reference, you can also see Macha's mounting location, which is in the trunk. I wanted to go lower to avoid vapor lock, but I don't think Chris has had any problems with his setup, and its easier to do than mine.

One last thing - yes I did install a block off plate. There is a BMW part for this. Don't recall where I got it.
 
i see Pierburg makes a couple of models any particular one? thanks

ok i reread your above input saw links thank you
 
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Forgive me for asking; This may be obvious to others, but when installing the Revolution Electronics fuel pump controller...where under my Bavaria dash would I find the "tachometer lead" to connect the revolution's green wire?

lead?
1773425054300.png
 
I use the VDO lift pump from the early FI cars along with the fuel pickup and sender from an E28. I get them from the boneyard whenever I find one and have about 10 spares. I keep two spares pre-wired in my car, and it takes just a few minutes to change it out. I've only lost a couple of them in about 15 years.
 

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Hi Mosearch - the tach signals in our cars come from the negative terminal of the ignition coil. I know the revolution instructions state that you should tap into the tach wire under the dash, but I dislike those wire taps. I instead ran my wiring to the coil.
 
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