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GQ blowing smoke

Tech Talk for Nissan owners.

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Posts: 522
Joined: Tue Aug 31, 2004 2:35 am
Location: Sydney

GQ blowing smoke

Post by mabsydney »

I noticed I'm blowing a lot of white smoke out of the exhaust when the motor is working hard uphills.

Any ideas what may be causing this and should I be worried about it?

TD42 Auto

Thanks,

Martin
1989 Nissan Safari TD42 with stuff
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mav
Posts: 320
Joined: Thu Jun 26, 2003 1:53 pm
Location: traralgon victoria

white smoke

Post by mav »

white smoke is unburnt fuel, black smoke is not fully combusted fuel, i would say you have a bad injector problem (squirting/streaming the fuel not spraying misting the fuel) you should get your injectors checked soon as this can caused premature engine failure.
see ya mav
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Re: white smoke

Post by bogged »

Injectors
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Joined: Tue Aug 31, 2004 2:35 am
Location: Sydney

Post by mabsydney »

Just been searching old posts on this subject too and was thinking I'd put some injector cleaner through.

What brand of injector cleaner would you guys recomend?

My exhaust is farked and needs replacing, but I'm waiting til it falls off as I'm broke! Theres holes in the exhaust and the pipe is fully cracked after the muffler. Could this be contributing to the white smoke i see?
1989 Nissan Safari TD42 with stuff
User avatar
mav
Posts: 320
Joined: Thu Jun 26, 2003 1:53 pm
Location: traralgon victoria

smoke

Post by mav »

mabsydney wrote:Just been searching old posts on this subject too and was thinking I'd put some injector cleaner through.

What brand of injector cleaner would you guys recomend?

My exhaust is farked and needs replacing, but I'm waiting til it falls off as I'm broke! Theres holes in the exhaust and the pipe is fully cracked after the muffler. Could this be contributing to the white smoke i see?
no i'd say its the injectors.
see ya mav
Posts: 176
Joined: Thu Jul 15, 2004 4:13 pm
Location: Wodonga

Post by GutSquisher Media »

I will say go for the injectors as a first call, but its not the only cause for white smoke.

Here is Some info for you all.

Blue-White smoke:

Blue-white smoke may be noticed at engine start-up whether the engine is at normal operating temperature or not. Blue-white smoke can be observed at all ambient temperatures and should not last longer than a minute or two after the vehicle has been driven. Blue-white smoke can return when ambient temperature is below 10 degrees C (50 degrees F), and after the engine is warmed up due to extended idling. This is due to combustion chambers cooling own during periods of extended idling time. Heavy blue-white smoke may also occur if the engine is operated at full throttle with the transmission in neutral or park. If you see continuous Blue-white smoke while driving, then you probably have air being sucked into the fuel system.

White Smoke:

White smoke and blue-white smoke share some of the same characteristics. White smoke is fuel not being burned. Extreme white smoke can be caused by the combustion chambers cooling down. One cause of this could be incorrect injection pump timing. Coolant getting into the combustion chamber can cause white smoke also. Possible causes are blown head gaskets, cracked heads cavitation, etc.

From http://www.freeautoadvice.com/diesel/smoke.html
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