mechanical fuel pump

[martog 144]

8 hours ago, sierra3dr said:

don't remember that one.......his phrase was "it works for me"

 

...Until it splits and sprays fuel all over everything meaning you know what. 

You'd be surprised how much pressure there is just in the return line. I had a leak in the metal return line that runs along the chassis and up towards the tank (under the boot floor), and when I disconnected it from the plastic line alongside the chassis I got blasted with petrol. This was just after having the engine running, switching off, getting out then smelling petrol. Sticking my head under the car I could see a pool of petrol on the garage floor and sure enough the metal line had a few small pinholes.

[Captain Scarlet 95]

On 11/17/2024 at 7:26 PM, sierra3dr said:

I don't know if  I am having a blonde moment,my MK5  has stopped delivering fuel.I do have an inline filter so I can see if it fills,which it does not anymore. I have put on a new pump,no change. I have pulled out the pump pushrod and the length is about 44mm,which as we know,is for the 1.6 and the 50mm is for the 2 litre engines. And on mine there is no spacer. So,if the 2 litres had the spacers on,if they are 5mm thick,meaning the pump is 5mm further away from the rod

Does the car still run with the inline filter not full ?

Most inline filters have the outlet positioned internally near the inlet,so most of the time they are not full of petrol,it seems strange but it's how they work.

In fact if they start to fill up and stay that way it may indicate that the filter is partially blocked.

[sierra3dr 51]

the inline filter is usually full...I have actually put a new inline filter on...I think it could be the pick up pipe on the fuel sender,as I am guessing it will have a filter

[sierra3dr 51]

Update...found time and dry weather to remove the fuel sender....the gauze looks clogged up,can't really tell

[sierra3dr 51]

And was think replacing it like so. Or just leave the pickup pipe without and have two inline filters before the carb

[sierra3dr 51]

or inline pre-pump would be best

[sheffieldcortinacentre 658]

You can get a very similar filter to the original for paint spray guns.

[sierra3dr 51]

18 hours ago, sheffieldcortinacentre said:

You can get a very similar filter to the original for paint spray guns.

oooohw they do look  the same.decided to leave it without and put an external inline filter prepump. I'm just waiting  for the battery to charge up and see if was the fault of fuel not reaching the carb

[Captain Scarlet 95]

On 12/13/2024 at 4:00 AM, sierra3dr said:

the inline filter is usually full...I have actually put a new inline filter on...I think it could be the pick up pipe on the fuel sender,as I am guessing it will have a filter

 

But they are not normally full.

I can't see anywhere on here where you say it's not running properly due to fuel starvation I'm just trying to save you a load of work chasing something that's not a real problem because you think it should be full.

If it's running ok leave it as it is.

Apologies if I have missed something mate 

[WS1 9]

On 11/17/2024 at 7:26 PM, sierra3dr said:

I don't know if  I am having a blonde moment,my MK5  has stopped delivering fuel.

he said the above.... im assuming from that it aint running🤷‍♂️

[WS1 9]

On 12/21/2024 at 9:13 AM, Captain Scarlet said:

 

But they are not normally full.

i must admit mine was always full and is the type that can be screwed apart and cleaned...i cleaned it out and put it back on and now it dosent stay full but runns fine... i did asume id got a little air draw on the fuel filter seal but after your comment i will leave it alone so cheers😊👍

Edited December 23, 2024 by WS1

[sierra3dr 51]

On 11/17/2024 at 7:26 PM, sierra3dr said:

I don't know if  I am having a blonde moment,my MK5  has stopped delivering fuel.I do have an inline filter so I can see if it fills,which it does not anymore. I have put on a new pump,no change. I have pulled out the pump pushrod and the length is about 44mm,which as we know,is for the 1.6 and the 50mm is for the 2 litre engines. And on mine there is no spacer. So,if the 2 litres had the spacers on,if they are 5mm thick,meaning the pump is 5mm further away from the rod

 

I had to  remind myself....here you go Captain Scarlet.....

Edited December 26, 2024 by sierra3dr

[sierra3dr 51]

On 12/21/2024 at 9:13 AM, Captain Scarlet said:

 

But they are not normally full.

 

well partially full

[sierra3dr 51]

good news everyone,she is now running correctly. Casting my memory back,I had to drop the subframe to renew the subframe bushes in May this year(2024). In doing so the fuel lines had to be split. Now,bushes renewed and the subframe reattached. A this stage,I may have crossed the fuel lines,meaning the fuel supply got connected to the return pipe. But,I had been driving the Cortina since the August 2024 MOT up to when I started this post on the 17th of November. I had only noticed this pipe cross-over when I had decided to install a new copper supply   fuel line using a brass compression fitting to join the front OE pipe clipped into the subframe

Edited December 26, 2024 by sierra3dr