New fuel pump but now won't start....?

[Paulo.dicanio]

Hi all,

I replaced the fuel pump on my 5l chim and now the car wont start? The pump is priming and the relays are working but it just turns over. The old pump was still working before I replaced it and the car was starting fine. I only replaced it as I had just replaced the fuel pipes and thought I might as well do the pump while im there!
The tank was pretty much empty so I topped up with a 5L jerry can, could that be still too little petrol to prime the system?

Any ideas greatly appreciated! thanks in advance.

[SILICONEKID340HP]

Paulo.dicanio said:

Hi all,

I replaced the fuel pump on my 5l chim and now the car wont start? The pump is priming and the relays are working but it just turns over. The old pump was still working before I replaced it and the car was starting fine. I only replaced it as I had just replaced the fuel pipes and thought I might as well do the pump while im there!
The tank was pretty much empty so I topped up with a 5L jerry can, could that be still too little petrol to prime the system?

Any ideas greatly appreciated! thanks in advance.

Have you fitted it the wrong way round

[Paulo.dicanio]

SILICONEKID340HP said:

Have you fitted it the wrong way round

Whereas i'm sure its something i would be silly enough to do normally but I don't think it's possible to fit the wrong way round???

[SILICONEKID340HP]

Paulo.dicanio said:

SILICONEKID340HP said:

Have you fitted it the wrong way round

Whereas i'm sure its something i would be silly enough to do normally but I don't think it's possible to fit the wrong way round???

I can set my Megasquirt just to run the pump only ,You could remove the resturn to see if its actually pumping .

[Milk Tray]

I thought this as the terminals will only fit one way, I took me weeks to figure it out swapped them over and it fired up staight away.

[Paulo.dicanio]

Milk Tray said:

I thought this as the terminals will only fit one way, I took me weeks to figure it out swapped them over and it fired up staight away.

So are you saying I have to swap round the big and small connectors on the wiring?

IF this is the case have i been running the pump backwards?!

Thanks for the help, i shall try swapping the terminals over tommorrow (assuming i'v grasped the right end of the stick) and hopefully that shall be a nice simple fix. (fatal last words...)

[Milk Tray]

correct paulo big to small and small to big, it worked for me I to had been running my pump in reverse.

[Paulo.dicanio]

Milk Tray said:

correct paulo big to small and small to big, it worked for me I to had been running my pump in reverse.

Right you were good sir! you have saved me a few hours head scrathing!

[Milk Tray]

Glad it is fixed, I thought it would be ages before I could pass this little nugget of info on as it only happened to me a couple of weeks ago. I did not have to wait long