Offroad-Express

Hi

She's turning over. Fuel filter pumps hard and pumping fuel through but that's where it stops. Try bleeding the injectors but nothing. No fuel gets sucked by the pipe going to the Injector pump either?

Any ideas?

Why wouldn't the injector pump not pump fuel?

if its not pumping fuel out the return line then its probably got a blockage.
whats the story behind it? is it a rebuild or engine just stopped while driving ?

So if you take the main line off to the injector pump and pump the hand primer do you have fuel there?

If yes there are 2 possibilities: Fuel shutoff solenoid has decided to jam shut, not allowing any fuel through the pump; 2nd thing is the fuel plunger spring has either broken or jammed open, this is the essential suction unit in the pump that pumps the fuel.

If no, try putting the old fuel filter on again (or another new one if you've buggered the old one), and pump the hand primer, see if you have fuel through to the pump.

Have you tried cracking off all 4 injectors and winding the engine over, and seeing if you have any fuel throughput at all.

She's never ever not started after more than 3 turns and just back from a long trip.

Ill be honest and say I just bled the one injector. I'll try those other recommendations around the injector pump in the morning and get back to you.

Thanks for the feedback. It's so strange?

Let me get this straight sorry. If I loosen all the injectors and hand pump the pump on the fuel filter, I should get fuel all the way through the injector pump to the injectors? Or is there another Manuel pump on the injector pump somewhere?

KZJ70 wrote:Let me get this straight sorry. If I loosen all the injectors and hand pump the pump on the fuel filter, I should get fuel all the way through the injector pump to the injectors? Or is there another Manuel pump on the injector pump somewhere?

No you wont get fuel out of the injectors by hand pumping the primer.
Also there is no fuel shut of solenoid per say on the 1KZTE injector pump. It is an electronic pump controlled by an ECU. The spill valve controls fuel thru the pump.
Could be a myriad of things with these electronic pumps.
Have you checked all the fuses.
I will take a punt and say its either the spill valve / relay or the ECU has given up the ghost.
Search the forum as this subject has been thrashed out before.

Have you pulled off the fuel hose between the primer and the pump? Put a can under the hose and pump it hard! If fuel is coming thru then you are all good from the tank to the pump.

You'll have to crack all 4 injectors off, not right off, but off enough so if they could leak they would. Then with the main line hooked up to the injector pump, wind the engine over on the starter key, for 10 seconds or so. If you have fuel puddles around the injectors, do 3 of them back up tight again, and leave 1 cracked off, wind it over again on the starter, it should at least fire. This will clear an air lock in the injector pump if there is one.

If you have no fuel at the injectors after winding it over, chances are you have an issue with your injector pump. Check your main fuse box under the bonnet, it could be your main power feed to the pump to open the shutoff solenoid. If your fuses are ok, disconnect the battery, turn the key to on, then hook the battery up. It will spark slightly, so watch your eyes, but this will send a voltage surge to the shutoff solenoid potentially enough to open it again. It is however only a temporary fix and it may/will happen again.

The battery disconnect method can jump start the ecu to open the pump again, it works the same as with a shutoff solenoid.

Still no luck but can confirm the following:

- primer pump is passing fuel to the injector pump and it goes as far as the overflow nut on the top of the pump.
- tried removing the battery lead and resetting the solenoid
- all the fuses in the cab are intact (are there any other fuses I'm missing under the hood?)
- no fuel to any of the injectors even when all the air is out right through to the overflow on the pump. Turned her over for 30sec while I had jumper cables on the battery from another car.


I'm taking it's the solenoid you good folk have mentioned shut closed and faulty?

Get a diesel mechanic on the case to come out or anything else I could try? Don't really have the cash to be honest

I would say Kbushnz is probably on the money when he says spill valve or ECU - remote possibilty injector pump is not turning as feed pump inside injector pump should still suck fuel from tank if the drive shaft which carries its vanes is intact. Good luck!

KZJ70 wrote:Still no luck but can confirm the following:

- primer pump is passing fuel to the injector pump and it goes as far as the overflow nut on the top of the pump.
- tried removing the battery lead and resetting the solenoid
- all the fuses in the cab are intact (are there any other fuses I'm missing under the hood?)
- no fuel to any of the injectors even when all the air is out right through to the overflow on the pump. Turned her over for 30sec while I had jumper cables on the battery from another car.


I'm taking it's the solenoid you good folk have mentioned shut closed and faulty?

Get a diesel mechanic on the case to come out or anything else I could try? Don't really have the cash to be honest

Yep, I would say your injector pump has an internal problem. Buggered plunger or spill valve.

As said, try and borrow an ECU first before you do anything else !
As it is normally the culprit....
Between it and or the Spill valve....
Overhauling an Electronic pump is mega dollars...
When all it could be is a $275 odd full reco of the ECU at Anything Electronic...
As long as you have done the basics first and ensure the fuel is getting to the pump and the return / overflow line back to the tank is clear.

If swapping out ECU doesnt work meter out the valves on the pump.

Timing Control Valve 10 to 14 ohms at 20 degress C

Spill Control Valve 1 to 2 ohms at 20 degrees C

If either of these reads outside the range they are shagged.

Second hand ECU or complete injector pump is 250. So I really want to be sure it's not the ECU.

Anyone in Welly able to help with an ECU?

Did some online reading and saw those numbers to check on the multimeter so I'll have a crack at that.

Far out! Really want to go on that Odlins road outing this weekend!