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

As the title says.
Was fine untill injectors replaced.

First start of day. If not primed will struggle to start. run for a bit & quit.
Pump up & starts after a bit then stays running.

Keep using & eventually starts like it should.
Goes well when under way.

Garage is trying to sort it but so far nothing obvious. Usual sources of air leaks seem fine.
How much use are the electronics in this sort of situation.
I'm wondering about pressure loss in hi pressure pump or similar.

If hitting it with a hammer doesn't work I'm lost.
Which's why the garage has it. ( they did the injectors)

Any suggestions please.

Low primary fuel pressure to the pump

Is there an external fuel leak under the bonnet ?

White puff of smoke on startup ?

A rattle until it idles smoothly ?

Valve in fuel primer leaking off? Try putting a one way valve (the right way round) in the fuel line before the filter

Have you bleed the air out of the system after replacing the injectors?

Did it have starting problem before and they replaced injectors to try and fix problem?

It’s fucked, buy a great wall


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rather buy a nissan

You guys have got it all wrong, the current approved advice is buy an EV!

Just wait till they whack them with road users....

Your loosing prime somewhere. Something is leaking and letting air in.

It isnt making oil is it?? ( check oil level, is it high on the stick??)

Something isnt right somewhere.

Did you replace the injectors? or a garage? If a garage, go back to them.
Can you guarantee there is no debris that may have compromised the seal when refitting the injectors or the pipes?
A loose injector, perhaps the crush washer isn't sealing, or a loose pipe either at the injector or the pump, possibly. Either will be letting air in and losing prime.
Was the fuel filter replaced at the same time? it may not have sealed and is letting air in.
Loose hose clamp on fuel line from filter/primer housing to injector pump.
Brittle/cracked fuel hose, unlikely as not old enough.
Hand primer has failed and is letting air in.

Originally Posted by tac a1

Something isnt right somewhere.

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...

Originally Posted by tac a1

Something isnt right somewhere.

Oops - double tap...

I’m pretty sure your suppose to replace the hard lines to the injectors as well when doing injectors on these, sometimes the don’t seat properly when reusing them and can cause these issues

You'd more than likely see them leaking if that was the case. First thing Id try from what he has said about it would first start in the morning prime it until plunger goes hard and see how it starts. If its happened after the injectors have been replaced id take the bleed off rail off it and check around where the tube goes into fitting for cracks, can be common for them to get damaged when undoing the nuts that hold it on if the nut twists the rail when removing it. Hard to tell on the internet....