Nissan Navara & Black smoke

Is this the model with the DPF in the exhaust. I would be taking the Narava to an indepentent diesel mechanic for his opinion. For what its worth Nissan are famous for fobbing people off with warranty issues. Had he been using Bio diesel by any chance?
Cheers Pete

D & M

"would this be a suitable answer if this was your car ??"

Well it depends on how you look at it:

(a) Yes! it is a suitable answer if suggesting possible causes for the black smok.e

(b) Yes! if it is a sub standard fuel issue that is causing EGR and/or over fueling problems. If this is the case then the responsibility lies with the fuel supplier.

(c) No! not suitable if it is a Nissan Dealer attempting to baffle your brother with bullchit into thinking it is something outside the ambit of Nissan responsibility if still under warranty.

Your brother has taken a positive step in commencing to use BP fuel, at least for the time being.

Firstly it is normally/usually excellent clean fuel, albiet a tad higher in cost.

Secondly, your brother may see an immediate response for the better from using a different fuel source. It's not necessarily going to fix his problem as the damage to the EGR etc may already have happened, but it may give him an indicator that fuel was/is the cause.

Thirdly, should your brother or anybody else for that matter have a fuel problem with their vehicle that can be traced/shown to be BP fuel then BP will fix same without any problems. Just make sure you keep their fuel dockets.

If it is not a fuel quality problem then there is a myriad of things that could be causing his problem, that only a proper testing and diagnosis by Nissan on their exclusive computer diagnostic equipment will identify.

DD

An injector service may help

It's over fuelling for the available air mass. So first step is to check the obvious - are there any air intake restrictions? Blocked / dirty air filter? Loose or split turbo hose? EGR Valve stuck open? There is no way it will need injectors cleaned at 30,000km.

Pat

Have a sticky beak into the air intake past the EGR hose. If it has oil in there, its the EGR valve.

Take it back for warranty, 30,000kms you said. Warranty Warranty Warranty.. Or Consumer Affairs.. Pretty Simple.

Every second d40 I see has heaps of black smoke under acceleration. It's a free 'extra' from nissan, along with dodgy wiring looms, no bash plates, bonnets that don't catch and door handle replacement every second service.
I'll bet you start noticing other d40's smoking off the lights and up hills now.