Non starting fuel issue

Please restrict your questions and replies to Capri related technical issues!
Post Reply
Gaz-LS
Posts: 22
Joined: Tue Dec 04, 2012 8:25 pm
Car(s): Ford Capri 1.6 LS rolling restoration. Golf gti 1.8 turbo as my daily car.

Non starting fuel issue

Post by Gaz-LS » Sat Apr 24, 2021 5:42 pm

Hi got a bit of problem starting my capri ,there isn't any fuel getting from tank to the carburetor. Yes fuel pump changed the fuel lines fuel filter and fuel pump still no fuel getting from tank to carburetor. There's plenty of petrol in tank petrol coming from fuel line to pump but not coming from pump, last running a couple of months back running beautifully never missed a beat. I wonder is it possible for the new pump to be faulty, very frustrating :swear: any ideas anyone.

User avatar
Peter-S
Donator
Donator
Posts: 7079
Joined: Mon Jul 28, 2008 7:57 am
Car(s): 1985 Capri 2.0
1983 Capri 2.8i
Location: Kent
Contact:

Re: Non starting fuel issue

Post by Peter-S » Sat Apr 24, 2021 9:37 pm

Gaz-LS wrote:
Sat Apr 24, 2021 5:42 pm
Hi got a bit of problem starting my capri ,there isn't any fuel getting from tank to the carburetor. Yes fuel pump changed the fuel lines fuel filter and fuel pump still no fuel getting from tank to carburetor. There's plenty of petrol in tank petrol coming from fuel line to pump but not coming from pump, last running a couple of months back running beautifully never missed a beat. I wonder is it possible for the new pump to be faulty, very frustrating :swear: any ideas anyone.
If you disconnect the fuel line above the pump and crank the engine (get someone to hold the pipe in a jar) does fuel come out?

If it does it suggests the problem is the carb - maybe a blockage in the filter within the big brass nut or the needle valve has stuck in the closed position.

If fuel does not come through then the pump is probably at fault or the push rod that activates it is stuck.
Is the replacement pump new or just a replacement?
ImageBanner by Peter Smith, on Flickr

Lord Flasheart
Posts: 302
Joined: Mon Feb 20, 2017 6:19 pm
Car(s): 3.0 Ghia

Re: Non starting fuel issue

Post by Lord Flasheart » Sun Apr 25, 2021 8:10 am

Didn't start mine for 3 months over the winter & had what we thought was a fuel pump issue, fuel pissing out of it when I started it.

Fitted new fuel pump, did a post mortem on the old pump thinking the diaphragm was buggered but it wasn't. Changed the float needle valve as we think the fuel had drained back past where it normally would do, causing the floats to stick, forcing fuel out of the pump breather.

Hope you get it sorted ;)

Gaz-LS
Posts: 22
Joined: Tue Dec 04, 2012 8:25 pm
Car(s): Ford Capri 1.6 LS rolling restoration. Golf gti 1.8 turbo as my daily car.

Re: Non starting fuel issue

Post by Gaz-LS » Sun Apr 25, 2021 8:41 am

Thanks for reply Peter, yes i've tried taking the fuel line off above pump going to carburetor and cranking over no fuel coming out, it is a new pump I put on mind the one I took off wasn't that old. I did put the pump what was on the car when I had it back on first and that didn't work so that's why I brought a new one.

User avatar
stevemarl
Donator
Donator
Posts: 4699
Joined: Wed Jul 11, 2012 6:31 pm
Car(s): Capri 1.6 laser

Re: Non starting fuel issue

Post by stevemarl » Sun Apr 25, 2021 10:26 am

Although unlikely, could it just be that the new pump needs priming? Maybe try pouring some fuel into it from the carb end so it`s full of fuel rather than air.
There`s not really much at all to go wrong with the mechanical fuel pump, yet here we are ;)
Edit: just re-read Peter`s reply: the pushrod IS there isn`t it?

Arnoldhar
Posts: 151
Joined: Sun Jun 15, 2014 4:35 pm
Car(s): 2.0l mk3

Re: Non starting fuel issue

Post by Arnoldhar » Sun Apr 25, 2021 7:02 pm

Maybe worth confirming that you have the flow and return fuel lines around the correct way, if the flow is on the return it won’t drag up any fuel just air

Bug
Posts: 3472
Joined: Sun Jan 04, 2009 3:52 pm
Car(s): Some

Re: Non starting fuel issue

Post by Bug » Mon Apr 26, 2021 9:53 am

Is the drive piston from the block to the fuel pump still in place?
I believe they can fall out when the pump is removed?
Although if the symptoms were there before, it can't be that.

Also, have you tried it with the fuel filler cap off? Just in case it's creating a vacuum.

Gaz-LS
Posts: 22
Joined: Tue Dec 04, 2012 8:25 pm
Car(s): Ford Capri 1.6 LS rolling restoration. Golf gti 1.8 turbo as my daily car.

Re: Non starting fuel issue

Post by Gaz-LS » Tue Apr 27, 2021 5:10 pm

Arnoldhar wrote:
Sun Apr 25, 2021 7:02 pm
Maybe worth confirming that you have the flow and return fuel lines around the correct way, if the flow is on the return it won’t drag up any fuel just air
yes fuel lines on correct way.
Bug wrote:
Mon Apr 26, 2021 9:53 am
Is the drive piston from the block to the fuel pump still in place?
I believe they can fall out when the pump is removed?
Although if the symptoms were there before, it can't be that.

Also, have you tried it with the fuel filler cap off? Just in case it's creating a vacuum.
no not tried with fuel filler cap off, I try the weekend and I'll take fuel line off bottom of pump to get some petrol out and pour in carb to get it running then it might get the pump to work.

Bug
Posts: 3472
Joined: Sun Jan 04, 2009 3:52 pm
Car(s): Some

Re: Non starting fuel issue

Post by Bug » Wed Apr 28, 2021 8:47 am

OK.
Try taking both the fuel pipes off the pump and turning the engine over by hand (spanner on the bottom pulley).
You should hear the pump sucking and blowing.
If you hear nothing then either the pump is duff, or the actuating rod fell out of the block when you changed it.

Not_Anumber
Donator
Donator
Posts: 835
Joined: Sun Jan 15, 2017 3:54 pm
Car(s): 2.8 Injection 1983 5 speed, weekend car. Audi A7 during the week. Slowly restoring a 1979 MGB + a 1964 Honda 250 twin. Previously owned 2 Capris.

Re: Non starting fuel issue

Post by Not_Anumber » Wed Apr 28, 2021 12:34 pm

+ 1 for taking the pump off to check the actuating rod is in place.

If not you wouldnt be the first.

Bug
Posts: 3472
Joined: Sun Jan 04, 2009 3:52 pm
Car(s): Some

Re: Non starting fuel issue

Post by Bug » Thu Apr 29, 2021 6:49 am

In fact, that is just as quick as my idea for checking the pump.
So take it off and look for the actuating rod.
If it is there, then try pushing the pump in and out. You should be able to hear/feel air being pumped through it if it's working properly.

Post Reply