where is located the fuel pump ?

[remydedez]

Hello everyone, would any of you have a picture of where the gas pump is on a a 1973 3.0CS because my mechanic changed the cylinder head for a phase two cylinder head and put a gas pump without any fuel filter in the engine bay, but I think it is not its good location because it does not work properly and the car broke down. Thank you

 

[TomHom]

Please place a photo of the head installed.
Furthermore a photo of the head's part number.
And of the gas pump currently installed.

Regards
Thomas

 

[Dlc]

Hello everyone, would any of you have a picture of where the gas pump is on a a 1973 3.0CS because my mechanic changed the cylinder head for a phase two cylinder head and put a gas pump without any fuel filter in the engine bay, but I think it is not its good location because it does not work properly and the car broke down. Thank you

Hi Remy, this is the mechanical fuel pump in my '71 CS
Dominik

 

[remydedez]

ok we replace the original cylinder head with mechanical fuel pump for late model heads it's why he add electric fuel pumps but I thinks the engine bay location isn't a good location to do that... what do you think about ?

 

[tochi]

I do not believe there is a significant consensus as to preferred placement of a mechanical pump with an electric one. Some have installed a pump inside the tank. Others have installed the pump near the tank.

https://e9coupe.com/forum/threads/final-word-on-electric-fuel-pump-for-carbs.22574/

 

[stphers]

Electric fuel pumps are better at pushing rather than pulling, install it in the right side area where the rear subframe is and make sure that you give enough clearance around everything so the suspension can move freely. Add a roll over shut off valve!!

Thanks, Rick

 

[remydedez]

ok thanks and do you think i need to add a fuel filter ? thanks

 

[Mike Goble]

ok thanks and do you think i need to add a fuel filter ? thanks

yes

 

[deQuincey]

ok thanks and do you think i need to add a fuel filter ? thanks

some thoughts:

1- make sure that the electric pump you use is for carbs (0,2 bar)
2- install a filter
3- install an anti-return valve

i would install the filter and the anti return valve in the engine compartment

 

[deQuincey]

ok thanks and do you think i need to add a fuel filter ? thanks

see here my manometer to check fuel pump pressure in action

 

[remydedez]

thanks for you answers ;-) do you have good models to advice me ? pierburg, facet... or others

 

[remydedez]

what do you think about this pump ? : https://www.mecatechnic.com/fr-FR/p...verselle-pierburg-0-27-a-0-38-bar_UC43700.htm

 

[HB Chris]

That is a great pump.

 

[Ohmess]

Agree. I am running that pump in my car. More detail can be found here: https://e9coupe.com/forum/threads/adding-a-electric-fuel-pump-suggestions.42221/post-369474

I have mounted a fuel filter under the trunk floor next to the gas tank.

 

[jefflit]

My only addition: I had a very difficult to diagnose problem whereby the car would stall and not restart when my kids drove it but would be fine by the time I got there to rescue them. It never failed on me, no matter how far I drove. The difference was they would be in traffic and I was always moving. The PO had mounted an electric fuel pump near the tank but above the muffler. When stopped, the car radiated heat upwards from the muffler towards the pump, causing it to seize/fail until cooled down. Mount yours accordingly.

 

[remydedez]

Hello everyone, I did install a gas pump in the trunk next to the tank to my mechanic. But I have a question that worries me a little bit, if ever a hose breaks off in the engine compartment because the pump feeds fuel all the time, I’m afraid of a fire. Do you have a solution for that? Thank you.

 

[Ohmess]

Yes. I have installed a fuel pump relay by a company called Revolution Electronics. The relay will kill the pump if it does not get a signal from the coil that the car is running. https://www.revolutionelectronics.com/Products/Fuel_Pump.html