diesel engine cloud of black smoke????????
Submitted: Sunday, Jul 19, 2009 at 12:17
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caramelos
Hi Guys:please tell us if you know why a diesel engine suddenly started giving a cloud of black smoke.
We drove the 4x4 about 10km and it was fine ,had a stop for 45 min dinner and back to the car ,then it started this cloud of smoke, at every gear engagement it would cover the back of the car,(i was driving behind) all the way home it was the same.
Next day to the garage and it did not give any smoke?????????????
Please any explanation will be appreciated ."puzzled!!!!!!!!!"thanks
love my Jacka 1999!!!!!3.0 diesel!!!! sarcasm!!!
Reply By: Peter_n_Margaret - Sunday, Jul 19, 2009 at 12:36
Sunday, Jul 19, 2009 at 12:36
Black smoke is excessive/unburnt fuel.
Injector, pump,.......?
Cheers,
Peter
AnswerID:
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Follow Up By: caramelos - Sunday, Jul 19, 2009 at 13:33
Sunday, Jul 19, 2009 at 13:33
Thanks Peter!
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Reply By: Member - sdr00y (Beecroft,NSW) - Sunday, Jul 19, 2009 at 13:30
Sunday, Jul 19, 2009 at 13:30
Was it the same driver each time? People drive differently to each other and as said above, black smoke is usually unburnt fuel. Maybe the driver was changing gear differently and revving the engine differently?
AnswerID:
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Follow Up By: caramelos - Sunday, Jul 19, 2009 at 13:35
Sunday, Jul 19, 2009 at 13:35
Thanks ,was the same driver (male)and a manual driver for yonks.
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Reply By: fisho64 - Sunday, Jul 19, 2009 at 13:34
Sunday, Jul 19, 2009 at 13:34
if its turbo charged it is almost certainly the turbo. Take it in and get it looked at asap
AnswerID:
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Follow Up By: caramelos - Sunday, Jul 19, 2009 at 13:37
Sunday, Jul 19, 2009 at 13:37
Thanks mate! yes went back to garage next day.
what a hassle!
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642446
Follow Up By: Member - Ian H (NSW) - Sunday, Jul 19, 2009 at 13:58
Sunday, Jul 19, 2009 at 13:58
If the black smoke is intermittent then it will not be a turbo problem but more likely over fuelling due to fuel pump problem or maybe injectors or something similar. A good diesel mechanic will sort it out easily but don't take it to him and say"I think the turbo has failed". That will only confuse him. Just tell him the symptom and let him find the disease.
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Follow Up By: Member - Stuart P (WA) - Sunday, Jul 19, 2009 at 14:52
Sunday, Jul 19, 2009 at 14:52
could be as simple as an air filter
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Follow Up By: fisho64 - Sunday, Jul 19, 2009 at 23:15
Sunday, Jul 19, 2009 at 23:15
"Thanks mate! yes went back to garage next day.
what a hassle!"
and what happened?????
Ian, I was thinking more of waste
gate sticking. When the turbo isnt providing boost while it should, black smoke is the result.
This could easily stick and then free up. An airfilter would be unlikely to do this, excepting something temporarily blocking intake.
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Reply By: bernie b - Sunday, Jul 19, 2009 at 15:23
Sunday, Jul 19, 2009 at 15:23
before you get to involved mechanically,check the basics...air and fuel filters
AnswerID:
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Follow Up By: caramelos - Monday, Jul 20, 2009 at 11:06
Monday, Jul 20, 2009 at 11:06
thanks bernie:
looking into the problem .went back to service the next morning.but it is nice to have an idea of possible causes.
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Reply By: Member - Graham H (QLD) - Sunday, Jul 19, 2009 at 16:22
Sunday, Jul 19, 2009 at 16:22
Thought Turbos blow white smoke when they go.
Last one I blew in a Scania bus certainly did .
AnswerID:
375201
Follow Up By: fisho64 - Sunday, Jul 19, 2009 at 23:11
Sunday, Jul 19, 2009 at 23:11
No black smoke normally from overfueling. If its white smoke it would be due to coolant or oil from turbo supply going into exhaust/intake from blown seal
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Follow Up By: Member - Graham H (QLD) - Sunday, Jul 19, 2009 at 23:45
Sunday, Jul 19, 2009 at 23:45
Thats what
mine did. Sh** the bearings, blew the seal and was on overun at the time
Actually had the brakes on to stop when it did it.
Had to turn it off before it started running on the oil or big troubles.
Like $30,000 worth.
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Follow Up By: fisho64 - Monday, Jul 20, 2009 at 00:20
Monday, Jul 20, 2009 at 00:20
Graham Id say yours was spilling oil into exhaust rather than into intake side, oil thats hot but not burnt is usually white smoke, burnt is blue.
Still, sounds very painful!
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Reply By: Neil & Pauline - Monday, Jul 20, 2009 at 10:09
Monday, Jul 20, 2009 at 10:09
My thoughts. Did you turn off the motor as soon as you stopped. If the motor has been working and then turned off before some of the engine block has cooled a bit the heat will go to the injector tips (being the smallest part). Not an uncommon problem with tractors. This is what an injector servicing guy says is the most common cause of injector failure.
A good test is if you turn off the motor and then a couple of minutes later notice the temperature gauge has gone up. you are then at risk of damaging the injector.
Neil
AnswerID:
375349
Follow Up By: caramelos - Monday, Jul 20, 2009 at 10:41
Monday, Jul 20, 2009 at 10:41
thanks to all your replies.
Actually the car has a timer set over the steering wheel that should keep the motor running after removing the key.as i understand it is necessary to maintain good health,but i have not been able to set the timer properly.asked a mechanioc afew days ago and he did not know how to do it.will look into this.
So according to your post the engine needs the cooling timer on to protect the injectors.
will ring the mechanics and ask them to set it up for us.
thank you
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