Thread: Discovery II v8 fuel delivery problem

hmm We have only run it out once,,
put a 5 litre can in and it started as normal.

I reckon about 30 kays from the light.


and there is NO filter,,
just a strainer at the bottom of the tank/pump.


maybe one injector didnt bleed properly,,

Originally Posted by Pedro_The_Swift

hmm We have only run it out once,,
put a 5 litre can in and it started as normal.

I reckon about 30 kays from the light.


and there is NO filter,,
just a strainer at the bottom of the tank/pump.


maybe one injector didnt bleed properly,,

There is a filter, it is part of the pump assembly, non serviceable

JC

the pump may be on the way out and over heating.

Remember that a Thor has a one way injection system. There is no return to the tank.

So It is theoretically possible that the engine kept running until the pressure dropped so low that it stopped, and almost the entire fuel line and rail were empty. Then when you put new fuel in the pump pumped fuel up against a big bubble of air with nowhere to go except a bit through the injectors.. This does not apply to a 14CUX as the air would be pushed out the regulator and back to the tank via the return line.


Mt guess is that if you would have kept cranking it would have eventually started with the first four litres, after it got rid of the air in the system.

Regard sPhilip A

just to add to Phillips,,
when mine stopped, NO attempt was made to restart untill the refuel.

Hello guys,
I thank all of you for your comments. Greatly appreciated!

I do not drive with near-to-empty tank normally. I also use quality fuel - mostly Shell. However it might be true that I could pick some piece of garbage somewhere.

The most reasonable explanation could be, however, that it was caused by overheating pump as you guys suggested here. It was really warm that day. I will make sure that the tank won't drop below 1/8 in the future so the pump is cooled properly by fuel.

Is there any simple test to check if the fuel pump works correctly after this happened? Do you think I could nearly kill it if this happened to me just once only?

And also (sorry for these stupid questions, I am still learning) questions regarding injectors: is there any way to clean them? Do fuel additives work? How to find if they work properly? Or if e.g. one of them is blocked? Engine power test?

Thank you again!
Regards
Jiri

I've used the Wynns brand of injector cleaner before but only in fords, I just used the whole bottle even though it says it will take care of 4 tanks and that's has always seemed to do the trick. Dirty fuel is a problem no matter where and what you use, I always try and avoid anything under 1/4 of a tank to be as safe as possible.

I'm not sure what running around with half full tank will accomplish,,