Exhaust Smoke While Accelerating

[RATT]

Just a quick one to hopefully ease my worry.

When I give my T wide open throttle in first gear there seams to be smoke coming from the rear (no it's not the tyres). I mainly notice this at night when another car is behind with headlights on, but have seen it in daylight. It's a browny sort of colour.

I've seen a couple of Skylines recently do the same thing but have no idea what it is as there is no smell.

It doesn't seem to be dust etc as it has happened on different roads.

[xrdreaming]

Most likely unburned fuel.

[Damo]

I agree with xrdreaming. I see it a lot on cruises.

[RATT]

Can't be good for the cat if that's it.

[Trough Lolly]

there wouldnt be to many boosted up cars out there that dont bloe a bit of fuel smoke when given WOT.

specailly when they run injectors and fuel pumps that could force rain to alice springs!

[Benny]

Definately not something to be too concerned about. The T is tuned from the factory to be a bit on the rich side so your going to see this unburnt fuel coming out when your on the loud pedal. This sort of soot can be very aparent in big hp cars that run without a cat.

[Guest PSIXR6]

Definately not something to be too concerned about. The T is tuned from the factory to be a bit on the rich side so your going to see this unburnt fuel coming out when your on the loud pedal. This sort of soot can be very aparent in big hp cars that run without a cat.

<{POST_SNAPBACK}>

A bit rich from the factory. I couldn't believe it when mine was run up on the dyno - stock an I saw it peaking at 10.5 AFR. No wonder I was doing 400km per tank

Much better now after the tune. Sits dead flat on 12.5-12.6 AFR on WOT. Fuel economy has improved 10 fold.

~allen

[RATT]

Thanks guys. I might have to see Spiro about this one.

[ExAreSix]

Definately not something to be too concerned about. The T is tuned from the factory to be a bit on the rich side so your going to see this unburnt fuel coming out when your on the loud pedal. This sort of soot can be very aparent in big hp cars that run without a cat.

A bit rich from the factory. I couldn't believe it when mine was run up on the dyno - stock an I saw it peaking at 10.5 AFR. No wonder I was doing 400km per tank

Much better now after the tune. Sits dead flat on 12.5-12.6 AFR on WOT. Fuel economy has improved 10 fold.

~allen

You're now getting 4000km to a tank??

[turb06]

lol.

I'm not even getting 400km per tank.

RATT - Definatley nothing to worry about, I saw an R33 GTR at willowbank one night blow that much black smake out the back it looked like a burnout, I kid you not it covered the entire stand, I would hate to pay his fuel bill.

Dazza.