Thread: 2014 diesel Hilux slow starting & loosing fuel prime.

If work was completed by a workshop, let them sort before outside diagnosis gets involved.

Is this pre-common rail engine?

Originally Posted by SL600

Is this pre-common rail engine?

The OP is describing a lack of primary fuel pressure

Originally Posted by 7mmsaum

The OP is describing a lack of primary fuel pressure

Your point is? CR has primary pressure as well.

It's common rail 1KD .
I'm pretty vague on the exact construction.
Seems the hi pressure pump also acts / has a lift pump function & sucks fuel from the tank.

Filter , pump & common rail have assorted sensors & valves.

I was wondering how much help they are in diagnosing what seems to be a lose of prime between the filter filter & the injectors.

possibly internal to the main pump.
As it will start (slowly) but stops.

Then requires a lot of priming on the filter pump.

Prime it first & it's still slow but keeps running.

After frequent use it starts like it should.

Left overnight back to not behaving.

Garage has done lots of these & this seems to be a first.

It doesn't help that it's best left overnight for symptoms to reappear.

Hopefully I'll hear more next week.

I've had a better run out of various Land Rovers.
AND they respond to hammers.

Yes so being CR your vehicle is in the best place right now. Not to difficult to diagnose with the correct gear. No guess no mess!

Originally Posted by No.3

This guy, for PM!

Likely something has failed in the system and it's not maintaining it's prime (air leak prior to the injection pump) or there isn't a seal working right in the injection pump. Another possibility is the stop circuit not sealing off? It will be a case of tracking down the culprit...

But hopefully it will come right if he leaves it for about 90 days?

Originally Posted by pennyless

It's common rail 1KD .
I'm pretty vague on the exact construction.
Seems the hi pressure pump also acts / has a lift pump function & sucks fuel from the tank.

Filter , pump & common rail have assorted sensors & valves.

I was wondering how much help they are in diagnosing what seems to be a lose of prime between the filter filter & the injectors.

possibly internal to the main pump.
As it will start (slowly) but stops.

Then requires a lot of priming on the filter pump.

Prime it first & it's still slow but keeps running.

After frequent use it starts like it should.

Left overnight back to not behaving.

Garage has done lots of these & this seems to be a first.

It doesn't help that it's best left overnight for symptoms to reappear.

Hopefully I'll hear more next week.

I've had a better run out of various Land Rovers.
AND they respond to hammers.

Obviously I didn’t use a big enough hammer when I owned my Landrovers, bugger

Big hammer and big wallet for land rover

I believe the "correct" answer is that it's not the size but the way you use it.

Never had a big wallet even before the landrovers.
I certainly learnt a lot. Usually by doing it twice.

There goes the bleed off rail idea . Old fart like me cant keep up with them, they are all just another car these days. Doesn't sound like your problem but replaced a fair few suction control valves on the cr toyotas, it will usually be a bit gutless if its that tho.

Blip Suction control valve was one possibility. I hope I'll find out next week. Fortunately it's not our main vehicle.
Their to bloody complicated for me. We have a number at work & usually their pretty reliable. Especially how they get treated.

On some of the late model stuff you have to code the injectors to the vehicle as well if you replace them.

Originally Posted by Maca49

But hopefully it will come right if he leaves it for about 90 days?

Are you suggesting a Government solution har har.

Originally Posted by pennyless

Blip Suction control valve was one possibility. I hope I'll find out next week. Fortunately it's not our main vehicle.
Their to bloody complicated for me. We have a number at work & usually their pretty reliable. Especially how they get treated.

Suction control valve is after the injection pump if it's the same as the Bosch system (other name for that valve is fuel pressure modulation valve, controls pressure in the common rail). I just had to get one of those replaced in my ute - while it creates a whole lot of odd issues if it goes bad the problems OP describes don't seem to add up to what I experienced. His issue seems more like in the supply to the injection pump, not the pressure delivery to the injectors (once the SCV goes bad the problem is usually constant but oddly timed faults and doesn't present from cold then go away when warm).