Black smoke MN Triton

[gazman152]

Hey guys. My 2013 MN is blowing black smoke when accelerating after each gear change. Not just a puff, a fair cloud that lingers on the road. Doesn't matter if it's hot or cold. I've already taken the following steps. Fuel supplier changed, new air filter, new fuel filter, secondary fuel filter added. Fuel system cleaner. Had its 30k service. Told the dealer. They said the MAF was loose on its housing and that they tightened the screws. It clearly wasn't that - it smoked the same after the service.
Mine is blanked. Is there a chance the egr blank is screwing with the air / fuel mix? I'm looking at getting Tonys mod and removing the blank. Any thoughts?

[Cowboy Dave]

I would try taking the blank out and yes fit the resistor. If you get one with a switch (or add one yourself) you can experiment to see what difference it might make.

Have you cleaned the maf sensor? Add some lube to the prongs on the maf plug too.

With the resistor thing I'm hearing Tony may have been able to source some new plugs from OS so you might want to hold off a week or two for true plug and play.

Won't hurt to go blank less for that time.

Black smoke usually means too much fuel but you've addressed most of the obvious suspects.

[gazman152]

Thanks Dave.

I'll check the sensor and wait on Tonys Mod. Do you use Maf sensor cleaner on those things?

[Cowboy Dave]

Yep that's the stuff. Use it on the terminals in the plug too, can't really hurt and may clean them up a bit. Keep in mind the amber bulb you'll see in the sensor is the temp sensor (clean that too) but the actual maf thing is almost out of sight inside the tube bit of the fitting.

[gazman152]

Just checked the MAF sensor. Looked spotless. I'll pull the blank out and see if it improves. Failing that, it's back to the dealer for a second look. Looking at the forum it doesn't appear to be a common problem. Hopefully it's nothing serious.
Thanks again Dave.

[destorman]

When mine did the black smoke thing it was not long after that it got the low speed bunny hops and with that the dealer did the manifold carbon build up, which fixed both issues. Have to check my paperwork but that was at around the 45,000k's mark (from memory)

Edit - went back and found this in one of my old posts:

engine light was coming on intermittently, and an odd 'surge' ... reported a 30k service, which seemed to fix it, but by 45k service the light was on, and surge had been back a couple of times ... reported again, they did the service and decided to check the manifold, under warranty ... surprise surprise there was carbon build up, so they fixed, replaced under warranty ... all good now

[Cowboy Dave]

Yeah I wondered about that but then he said he was running a blank so I figured he might not have any carbon buildup to speak of.

[mattz]

Also give the pins in the maf sensor plug a bit of a tweak to make sure they are making a good contact.

[Cowboy Dave]

This is a long shot in that usually it would produce different symptoms but you could remove the suction control valve and give it a bit of a clean and put it back in. Some have had success from rotating it 180 degrees on re-installing. The SCV usually produces surging though rather than black smoke.

[gazman152]

When mine did the black smoke thing it was not long after that it got the low speed bunny hops and with that the dealer did the manifold carbon build up, which fixed both issues. Have to check my paperwork but that was at around the 45,000k's mark (from memory)

Edit - went back and found this in one of my old posts:

engine light was coming on intermittently, and an odd 'surge' ... reported a 30k service, which seemed to fix it, but by 45k service the light was on, and surge had been back a couple of times ... reported again, they did the service and decided to check the manifold, under warranty ... surprise surprise there was carbon build up, so they fixed, replaced under warranty ... all good now

The blank went in pretty soon after I purchased the ute so I'm assuming that there would be little or no carbon. I also run a provent. I'll pull the blank out today and see if it makes a difference. Thanks for your replies guys.

[gazman152]

The blank has been removed since my last post. No difference in the black smoke output with or without the blank. Dropped it into the dealer today. In went another two bottles of that potent Mitsubishi Fuel System Cleaner. Advised to wait another 1000 km to see what cleaner does. Next step - check injectors. Tonys mod is on the way too.

[gazman152]

Update on my smokey MN. 3 cans of fuel system cleaner didn't work as I suspected it wouldn't. At dealers today for 3rd and more extensive check. New injectors ordered and going in Monday. If I wanted to blow injectors I would have purchased a Hilux. They said it was a dirty fuel issue. I am fussy where I fill up and buy premium diesel when ever I can. Anyone else done their injectors this early. It's all under warranty but not happy

[Cowboy Dave]

Pretty rare for injectors to go that early. Let's hope that actually fixes the problem.

[gazman152]

Pretty rare for injectors to go that early. Let's hope that actually fixes the problem.

It's fixed. New injectors in under warranty . And no more smoke! Dealer said it was as simple as 1 bad tank of fuel. I'm now running a secondary fuel filter so hopefully that helps. Be warned anyone not running one. I

[srb]

Pretty rare for injectors to go that early. Let's hope that actually fixes the problem.

It's fixed. New injectors in under warranty . And no more smoke! Dealer said it was as simple as 1 bad tank of fuel. I'm now running a secondary fuel filter so hopefully that helps. Be warned anyone not running one. I

Wow done under warranty even though they blame bad fuel. Very lucky you have a good dealer.

[N.T.TRITON]

What secondary filter are you running ,where did you install it.

[gazman152]

What secondary filter are you running ,where did you install it.

Fuel Manager Secondary Filter. It's a DIY kit inc bracket / hoses etc. Very easy install. Few threads on here detailing the system or go to dieselcare.com.au