No fuel after fuel pump 1UZFE

Mattman · Post by **Mattman** » Sun Dec 17, 2006 1:42 pm

My Surf with 1UZFE failed to start the other day, pulling the fuel link from the filter to the fuel rail showed air pressure but no fuel.

Connecting a new line to the pump outlet running down to the ground gives virtually no fuel at all after 20 seconds of cranking.

Pump sounds fine. The Surf is an ex 2.4 Diesel with the original tank. Gauge shows 1/3 tank but I added another 5L just to be safe.

Any thoughts on where to from here?

Cheers
Matt

Mattman · Post by **Mattman** » Sun Dec 17, 2006 7:25 pm

Update - disconnecting the tank supply to the pump and running a hose to a container gave an instant start.

Reconnecting the existing supply line back to the pump and it started up with no problems after a couple of seconds. Must have been some sort of air blockage.

Cheers
Matt.

emknaps · Post by **emknaps** » Thu Jan 18, 2007 8:43 am

MAttman,

Have you made any modifications to the pickup in the old diesel tank?
and where have you mounted you EFI pump?

EFI pumps dont like having to suck and they need the same size inlet hose and pick as the input into the pump itself.
usualy 1/2 inch at the least.

I swaped my old diesel tank for a V6 EFI tank which has the pump already in it.

It fed my EFI chev just fine so it should be ok for your 1UZ.

hope this info is of some use to you.

Daniel.

Mattman · Post by **Mattman** » Thu Jan 18, 2007 10:10 am

Thanks Daniel. I am just in the process of trying to track down an EFI tank so I can ditch my current setup.

Cheers
Matt.

Clint · Post by **Clint** » Thu Jan 18, 2007 12:00 pm

Funny, I just mounted up an inline pump in the old line at about mid tank level & it works sweet.

EFI tank would be best tho, quieter too.

Cheers
Clint

emknaps · Post by **emknaps** » Thu Jan 18, 2007 3:44 pm

As mattman found out, they do have a little bit of trouble self priming when above fuel level...

it is under full load that the ill effects of a poorly fed EFI pump will be noticed,
perhaps a bit of a lean out which is usually a bad thing.

Theres a good reson why the feed to tthe EFI pump is 1/2" in size.

the V6 EFI tanks also have the pump mounted in a swirlpot in the center of the tank which is magic for running on big angles with low fuel.

I used to run out of oil presure before the engine ran out of fuel presure on a step down hill.

cheers,
Daniel.