24 replies to this topic

[Ebo100]

My VXT failed to start this morning. We have had some torrential rain in the last couple of days so I just put it down to a damp coil pack. I put the battery on charge and left for work.

 

Tonight I've taken the coilpack off and refitting the plugs have found I have good sparks across all plugs. The battery is spinning the engine over fine. A look in the boot shows all is dry in there and I have tried swapping the grey relays around. The contacts all look in good condition and when the key is turned I can feel them working.

 

At the fuel rail; pressing the valve only gives the briefest of squirts with only a small amount of fuel flowing. Turning the engine over creates a small amount of pressure and gives a small squirt again. I can normally hear the pump priming but today there is nothing, and leaving the ignition on while working the fuel rail valve does not give the continuous squirt that is mentioned on other threads.

 

Is this all pointing to the fuel pump or could it still be a relay problem?

Is there anything else I can check? Any help gratefully received.

[FLD]

Have you checked the cut-off switch?  Red button at the rear of the subframe on the pass side of the engine bay.

[Ebo100]

Yeah forgot to mention that. I've pressed the rubber down. If it had triggered would I be able to feel it sticking up?

 

I did hit a phesant last night but it did keep driving for another half a mile before my house and ticked over on the drive for a while.

[Acidpopstar]

Sounds like a similar issue to mine. Not solved it yet so I'll be watching this with interest!

[Zoobeef]

Could try shorting across the relay socket to manually feed the fuel pump.

[smiley]

Any codes in the ecu?

[mbes2]

The fuel rail will only prime once till the engine is running 

 

Disconnect the MAF to see if the car fires

 

Make sure you reseat the yellow starter relay

 

These cars are becoming old timers now

[FLD]

Check the contacts for corrosion. There's the ones on the pump itself and then there's the one in the loom of doom plugs (big pink and brown wire iirc). I had a weak pump which turned out to be wiring. It just couldn't get the current to run fully. Swapped the corroded terminals and all was well again. Quieter too!

[Ebo100]

Could try shorting across the relay socket to manually feed the fuel pump.

Do I just need to loop a length of wire over two of the sockets?

 

Any codes in the ecu?

No codes (for a change )

 

The fuel rail will only prime once till the engine is running 

 

Disconnect the MAF to see if the car fires

 

Make sure you reseat the yellow starter relay

 

These cars are becoming old timers now

Cheers, I'll try this later, would the MAF stop the fuel flow?

 

Check the contacts for corrosion. There's the ones on the pump itself and then there's the one in the loom of doom plugs (big pink and brown wire iirc). I had a weak pump which turned out to be wiring. It just couldn't get the current to run fully. Swapped the corroded terminals and all was well again. Quieter too!

 thanks I'll check this over tonight.

[FLD]

Good luck dude. It's not nice when they won't run.

[quimbles]

Another for the loom of doom.

 

i had very similar problems a couple of months back... fuel pump wasnt priming, car wouldnt start.

 

pump was dead, current checked out ok... fitted new pump and that blew in 10miles.  

 

double and triple checked current and found it to be intermittent.... traced wires as best i could back to the loom and found some corrosion and replaced the dodgy bits. 

 

now all ok!

[FLD]

I have a spare pump if you find you have this problem.

[Spitfire Engineering]

Another for the loom of doom.

 

i had very similar problems a couple of months back... fuel pump wasnt priming, car wouldnt start.

 

pump was dead, current checked out ok... fitted new pump and that blew in 10miles.  

 

double and triple checked current and found it to be intermittent.... traced wires as best i could back to the loom and found some corrosion and replaced the dodgy bits. 

 

now all ok!

 

You burned out a new pump in 10 miles???

 

Gaz

[quimbles]

yep!  burnt it out.  id say it was due to my driving but more like my bad mechanics on the first pump replacement.

 

 

 

[Nev]

Pumps can burn out fast if they don't have any fuel to pump sometimes, as they need the petrol as a lubricant and also as a resistance to work against.

Edited by Nev, 10 December 2015 - 11:19 AM.

[Spitfire Engineering]

yep!  burnt it out.  id say it was due to my driving but more like my bad mechanics on the first pump replacement.

 

 

 

 

Any details?

unit model?

pump?

etc?

were you not offered some sort or warrenty?

 

very unusual

Gaz

[quimbles]

1st pump to fail was the original pump. checked voltage, relays etc all appeared ok.

 

2nd pump was a wahlbro from courtenays.... sent it back for inspection but got nada. cant grumble too much as it wasnt the pump at fault.

 

3rd pump is same as above. since the loom damage has been repaired car has done i guess 1k miles and a couple of trackdays and all is ok.

 

[Spitfire Engineering]

1st pump to fail was the original pump. checked voltage, relays etc all appeared ok.

 

2nd pump was a wahlbro from courtenays.... sent it back for inspection but got nada. cant grumble too much as it wasnt the pump at fault.

 

3rd pump is same as above. since the loom damage has been repaired car has done i guess 1k miles and a couple of trackdays and all is ok.

 

 

Not so unusual after all then  

 

Thanks for theinfo

 

Gaz

[wellsey]

Had the same thing happen last month fuel pump not priming check all wiring and fuses in the inner rear arch liner in the boot!! Mine had melted had an auto electrician round £40 later sorted

[Spitfire Engineering]

Had the same thing happen last month fuel pump not priming check all wiring and fuses in the inner rear arch liner in the boot!! Mine had melted had an auto electrician round £40 later sorted

 

Std pump though?