Black smoke from brand new turbo diesel car

**SiRbossR** · August 2nd, 2012 11:07 PM

Originally Posted by basti08

Wow! Fortuner's engine tuning is tame

It's the boosting perhaps.

**yebo** · August 2nd, 2012 11:08 PM

so if the everest is already vgt, then does that mean the koreans are better than the amreicans since their non-vgt diesels (the old grx crdi) does not smoke when you floor the pedal? also their vgt- diesels (gen 2 sta fe) also don't smoke no matter how aggressive you drive. hmmm...

**basti08** · August 2nd, 2012 11:12 PM

My Accent smokes just a tiny bit at times at 2-2.5K RPM. I think it's pretty normal.

**niky** · August 2nd, 2012 11:32 PM

Smoke will happen due to transient rich conditions caused when you suddenly ask the engine for more power. It happens a bit wi Hyundais, it happens quite a bit with Mitsubishis, it happens with BMW's 250-300 hp 3.0 diesels.

It's nothing to worry about if it's just a short puff.

**SiRbossR** · August 2nd, 2012 11:45 PM

Originally Posted by yebo

so if the everest is already vgt, then does that mean the koreans are better than the amreicans since their non-vgt diesels (the old grx crdi) does not smoke when you floor the pedal? also their vgt- diesels (gen 2 sta fe) also don't smoke no matter how aggressive you drive. hmmm...

It depends on the application and to what the engine is designed for.

Regarding Everests being smokey in sudden-WOT application, i assume that it's fuel governor and AFR is tuned richer in that kind of scenario. It injects more fuel to the combustion chamber as you floor the accelerator. That sudden change in AFR only last for milliseconds until the engine could cope up with what had just happen. Also, this is also to help cool the engine in that sudden engine acceleration.

This is a normal tuning norm in engines. If you happen to see some highly modified tuner cars, you'll notice that they smoke a bit in sudden-WOT more usual in a turbocharged engine.

I guess the Koreans tuned their engines more differently.

Though i see few 2nd gen non-ReVGT SF's smoking just a tiny bit when accelerating. Though i have yet to see both to smoke a lot even in normal driving. The most common smokers i see are Toyota D4D's, Isuzu Ddi's and Mitsu DiD's.

**Errol5** · August 2nd, 2012 11:49 PM

Originally Posted by yebo

so if the everest is already vgt, then does that mean the koreans are better than the amreicans since their non-vgt diesels (the old grx crdi) does not smoke when you floor the pedal? also their vgt- diesels (gen 2 sta fe) also don't smoke no matter how aggressive you drive. hmmm...

maybe, maybe not. but hey, look at the germans (bmw, mbs etc) diesel engines

currently Alterras are the only vehicles in its class not equipped with VGT. (correct me if im wrong)

i own an Everest too like the OP, and im very happy with it. Smokes too when i floor it. But ive seen others (monteros )do worse.

**crazy_boy** · August 3rd, 2012 12:11 AM

Originally Posted by EuroFD

In general, diesels produce dirtier emissions than gasoline. You can only minimize the smoke by using premium diesels from reliable stations. I have a similar observation with my Monty; but the smoke comes out during sudden acceleration.

A well maintained diesel engine actually produces less carbon dioxide than a gas engine.

**niky** · August 3rd, 2012 03:45 AM

Smoke is not carbon dioxide. Smoke is carbon... Period. Otherwise known as soot.

Carbon dioxide emissions only tell you how much fuel the engine is burning... In other words, it's a factor of fuel efficiency. Diesels are generally more fuel efficient, but they produce more particulate emissions than gasoline engines... And more carcinogenic emissions than gasoline engines.

So to say they pollute less because they emit less CO2 is kind of misleading. Only rabidly green washed governments consider CO2 a pollutant. They class it as such in order to tax buyers on fuel economy when they should simply just tax fuel to more effectively reduce CO2 emissions. But that's another matter entirely.

**timo07** · August 6th, 2012 10:09 PM

Originally Posted by SiRbossR

It depends on the application and to what the engine is designed for.

Regarding Everests being smokey in sudden-WOT application, i assume that it's fuel governor and AFR is tuned richer in that kind of scenario. It injects more fuel to the combustion chamber as you floor the accelerator. That sudden change in AFR only last for milliseconds until the engine could cope up with what had just happen. Also, this is also to help cool the engine in that sudden engine acceleration.

This is a normal tuning norm in engines. If you happen to see some highly modified tuner cars, you'll notice that they smoke a bit in sudden-WOT more usual in a turbocharged engine.

I guess the Koreans tuned their engines more differently.

Though i see few 2nd gen non-ReVGT SF's smoking just a tiny bit when accelerating. Though i have yet to see both to smoke a lot even in normal driving. The most common smokers i see are Toyota D4D's, Isuzu Ddi's and Mitsu DiD's.

I cannot recall seeing Everests that are emitting black smoke. Brand new crosswinds, yes. Isuzu alterras, barely. Quite a number of D4Ds, but I was surprised to see at least 2 BNew Montys (No plate yet and one with a V badge), Smoking worse than a crosswind.