Electric fuel pump

Please restrict your questions and replies to Capri related technical issues!
Post Reply
[email protected]
Posts: 65
Joined: Thu Mar 18, 2021 4:43 pm
Car(s): Fiat Tipo diseasel (daily driver)
Audi A8 luxobarge (high days, holidays and general waft)
Ford Capri 1.6 Laser (former daily driver, stored 15 years, rebuilt in lockdown, done, but in dire need of paint)

Electric fuel pump

Post by [email protected] »

Has anyone fitted such a thing, and if so, where about and what power feed did you use? It seems to suggest out of the engine bay to prevent fuel vapour lock. Is the carb over run feed man enough for the job? For some reason, even though it never was an issue in the past, the fuel readily and fairly rapidly (few days tops) drains back leading to extended cranking. I’m hoping electric pump will solve that by just instantly refilling the line back to the carb when I turn on the ignition.
User avatar
Peter-S
Donator
Donator
Posts: 7294
Joined: Mon Jul 28, 2008 7:57 am
Car(s): 1985 Capri 2.0
1983 Capri 2.8i
Location: Kent
Contact:

Re: Electric fuel pump

Post by Peter-S »

[email protected] wrote: Thu Sep 22, 2022 6:41 am Has anyone fitted such a thing, and if so, where about and what power feed did you use? It seems to suggest out of the engine bay to prevent fuel vapour lock. Is the carb over run feed man enough for the job? For some reason, even though it never was an issue in the past, the fuel readily and fairly rapidly (few days tops) drains back leading to extended cranking. I’m hoping electric pump will solve that by just instantly refilling the line back to the carb when I turn on the ignition.
Would fitting a non-return valve in the fuel line be an easier and cheaper option?
ImageBanner by Peter Smith, on Flickr
Mc Tool
Donator
Donator
Posts: 1991
Joined: Sat May 17, 2014 8:34 pm
Car(s): 1980 mk3 capri 2l ohc T9 , Toyota Blade Master 3.5l V6, Paso , 850T,rd400, 900ss
Location: Invercargill New Zealand

Re: Electric fuel pump

Post by Mc Tool »

Whilst the fuel in the line MAY drain back to the tank ......the valves in a mechanical pump should stop this but I cant see how it could drain the float bowl .
However I did use a facet fuel pump , cant remember the model , but it was about 4psi and I run it off the spare power wire up by the headlight relay.....worked fine 🙂
Sometimes I talk to myself ... and we both have a good laugh
[email protected]
Posts: 65
Joined: Thu Mar 18, 2021 4:43 pm
Car(s): Fiat Tipo diseasel (daily driver)
Audi A8 luxobarge (high days, holidays and general waft)
Ford Capri 1.6 Laser (former daily driver, stored 15 years, rebuilt in lockdown, done, but in dire need of paint)

Re: Electric fuel pump

Post by [email protected] »

Would fitting a non-return valve in the fuel line be an easier and cheaper option?
[/quote]

Tried one but it’s not very satisfactory, there’s still some drain back after a couple of weeks, it’s a random aluminium unit that looks a bit naff and just leaves another join in the fuel pipe (which I’ve just replaced).
[email protected]
Posts: 65
Joined: Thu Mar 18, 2021 4:43 pm
Car(s): Fiat Tipo diseasel (daily driver)
Audi A8 luxobarge (high days, holidays and general waft)
Ford Capri 1.6 Laser (former daily driver, stored 15 years, rebuilt in lockdown, done, but in dire need of paint)

Re: Electric fuel pump

Post by [email protected] »

Mc Tool wrote: Thu Sep 22, 2022 8:52 am Whilst the fuel in the line MAY drain back to the tank ......the valves in a mechanical pump should stop this but I cant see how it could drain the float bowl .
However I did use a facet fuel pump , cant remember the model , but it was about 4psi and I run it off the spare power wire up by the headlight relay.....worked fine 🙂
Should…but don’t. And it’s a new pump. Unless it’s a bit of a duffer. After a couple of weeks, for right or for wrong it takes a lot of cranking to get fuel back to the carb, as soon as it does…off it goes. Figured an electric unit might save me 4 goes on the starter just to get it running after been stood for a week or 3
User avatar
Major_Tom
Posts: 8447
Joined: Mon Jul 28, 2008 8:21 am
Car(s): 2.0S

Re: Electric fuel pump

Post by Major_Tom »

[email protected] wrote: Thu Sep 22, 2022 10:15 am Would fitting a non-return valve in the fuel line be an easier and cheaper option?
Tried one but it’s not very satisfactory, there’s still some drain back after a couple of weeks, it’s a random aluminium unit that looks a bit naff and just leaves another join in the fuel pipe (which I’ve just replaced).
[/quote]

Mine always takes a fair bit of cranking if left two weeks or more. Standard. Solution, drive it more!
I'm the one that leaves all those shoes in the carriageway.
SCP440
Posts: 35
Joined: Sun Apr 17, 2022 8:01 pm
Car(s): Capri Ghia MK3 3.0, Jensen Interceptor MK3, ZTT 260 V8

Re: Electric fuel pump

Post by SCP440 »

Fuel Flow pumps are the ones I use, very compact and 100% reliable and more importanly very quite.

https://simonbbc.com/fuelflow-015-fuel- ... lt-1-4psi/
Look at the bottom of the page to choose the one best suited to your engine.

Part of the problem is modern petrol, it is formulated to run in Fuel injected engines so vapourises at a lower temperature than the stuff our cars were desinged for. No Petrol car made now runs a carburetor. a lot of classic cars suffer with this problem and yes an electric fuel pump will often fix the problem. Dont forget to fit an inetia cut out to the pump.
Mc Tool
Donator
Donator
Posts: 1991
Joined: Sat May 17, 2014 8:34 pm
Car(s): 1980 mk3 capri 2l ohc T9 , Toyota Blade Master 3.5l V6, Paso , 850T,rd400, 900ss
Location: Invercargill New Zealand

Re: Electric fuel pump

Post by Mc Tool »

Yah , ok , I can see the fuel evaporating ( as mentioned above ) out of the float bowl ....and that does take a bit of cranking to fill up.
Now that it has been mentioned I do recall tipping fuel into the carb bowl breather ....where you can see the air correctors.........but that was after sitting for ...like a month or so .
Now you may think Im takin the piss but how about one of them primer bulbs that outboard motors have ........they are capable of flowing enough fuel for 250bhp......
and I know they cost $17nz coz I just bought one ( getting boat ready for summer fishing .....) Can be had in 5/16" and 3/8".
Gotta say that the only reason I fitted the letrik pump is because a friend gave it to me ( to small for his 454ci V8 ) and I couldnt resist the temptation to fiddle😁
Sometimes I talk to myself ... and we both have a good laugh
[email protected]
Posts: 65
Joined: Thu Mar 18, 2021 4:43 pm
Car(s): Fiat Tipo diseasel (daily driver)
Audi A8 luxobarge (high days, holidays and general waft)
Ford Capri 1.6 Laser (former daily driver, stored 15 years, rebuilt in lockdown, done, but in dire need of paint)

Re: Electric fuel pump

Post by [email protected] »

That’s just it, with having the car stood waiting for the respray that never happened for 3 months, then 40+ degrees (no way I was driving anything without AC in that) followed by it going for it’s current respray attempt it hasn’t done very many miles at all. Which means every time I am starting it it’s been weeks and needs a few good stabs at it. With winters approach, even less usage is incoming. I just want it easy to start rather than endless cranking
Mr B
Donator
Donator
Posts: 551
Joined: Fri Dec 09, 2016 9:07 am
Car(s): Four 3 litre Capri's and 2 Mark 1 GXL's

Re: Electric fuel pump

Post by Mr B »

Whenever I leave my car for more than a week or so she won't fire up, you could sit there all day cranking her and it's not gonna happen, Clive from Ticks advised me that the problem is probably the fuel pump (mechanical) diaphragm(s) are drying out especially with the shit petrol we have these days, I have to do exactly what MC said i.e pour some petrol into the carb vent tubes and fill the bowel manually, it would seem once the engine fires it can overcome the drying out problem and the pump starts working again until the next time...
If an honest man is wrong and after demonstrating that he is wrong he either stops being wrong or stops being honest
User avatar
T.M.
Posts: 258
Joined: Mon Aug 14, 2017 9:26 pm
Car(s): Capri 2.8 Injection (1984)
Location: Czech Rep.

Re: Electric fuel pump

Post by T.M. »

[email protected] wrote: Fri Sep 23, 2022 10:07 am Which means every time I am starting it it’s been weeks and needs a few good stabs at it. With winters approach, even less usage is incoming. I just want it easy to start rather than endless cranking
Hi,
I understand that "endless cranking" is unsatisfactory, but on the other hand, engine is much more happy with long cranking, because oil have time to go everywhere before engine starts. It's probably better than if engine starts after few weeks immediately to 1500rpm, especially with 20W-50.


Tom
Post Reply