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Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 9:22 am
by AJL Electronics
A typical cause for that problem is perished fuel lines from nylons to tank. The pump just sucks air and no fuel.

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 9:53 am
by scimitargtc
Had thought of that as I want to replace lines this summer for fire safety

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 10:02 am
by AJL Electronics
You could prove the point by running a line into a fuel can from the south side of the pump.

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 10:39 am
by scimitargtc
ok, simples question - the tank has 2 stubs 1 on the right when looking at them is slightly lower than the other - is it a given this is the supply side with the higher the return? tank came from gw at curboough & i know youll say just take off the pipes to check but the space is tight and really
dont feel like dropping th3 tank out

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 10:46 am
by philhoward
Assume nothing - but assuming there’s fuel in there, one will be straight into the tank at the top and the other should blow bubbles. I wouldn’t recommend sucking on it yourself, but fuel should come out of one of them and not the other..

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 10:54 am
by Tinker man
good morning,

i have tried to attach a picture which may help your question. is this the same as your tank? then again it may just add confusion if it is different!
stainless-steel-petrol-tank-scimitar_se6.jpg
stainless-steel-petrol-tank-scimitar_se6.jpg (50.61 KiB) Viewed 1050 times
thanks, Ian.

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 11:08 am
by scimitargtc
Ian, same as in your photo

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 11:12 am
by Tinker man
that's positive then. maybe some knowledgeable person on here can say left or right for fuel feed?

its not my tank, just a picture off the net i thought may assist.

good luck!

Ian.

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 2:09 pm
by TrevorG
Assume nothing, check everything is the best way forward! Original tanks have feed on outside, but who knows which is feed on aftermarket. For a few quid you can buy a suction brake bleeding kit which also doubles up as a brilliant fuel feed primer. If I was near enough you could borrow mine, but they are cheap on ebay. Bonus is that you can easily flush or bleed the brakes, check vacuum advance etc etc. as well.

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 3:47 pm
by scimitargtc
Spoke to david via lily at gw’s as I bought the tank from them, right hand stub is the supply to carb but he mentioned a diagram so I’m just wondering if he was referring to the manual on their cd which has a diagram...off back out to garage now to see if 8 can trace the pipe work along the car and failing that connect the return pipe in the engine bay to the fuel pump and see if. Sucks fuel in which case I’ll need to swap the lin s st the tan’ which due to space means I’ll have to drop the tank... if 8 were a betting man I’m going say it’s a stuck diaphragm in the pump

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 9:26 pm
by scimitargtc
Traced the pipe work, us ed the car lift I bought over a year ago which was fun getting the arms in the right positions having to get down each side of the car with arthritic knees and hand but did it and oh so Easy... anyway I had plumbed in the tank correctly, still no fuel so pump off again and on the bench, sounds like the diagfram is working but what’s the accepted method of testing off car?

Fuel pump/ lack of fuel

Posted: Thu Apr 18, 2019 11:06 pm
by scimitargtc
Bitten the “bullet” ordered an electric pump which as I am visiting our eldest son over Easter won’t be fitted for at least 2 weeks but confident now she’ll be running at last.."