diesel black smoke

Submitted: Tuesday, Jun 03, 2008 at 13:55
ThreadID: 58330 Views:3721 Replies:6 FollowUps:3
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have a pajero 2. 8 turbo diesel with 350000km on clock. last 12 mths or so have noticed much worse black smoke under load or when accelerating after constant throttle.also now getting hard to cold start even though i have replaced injectors, filters and glow plugs. car is generally in exc. condition and suits us as 2nd vehicle(we have td100 as main vehicle). any clues? i can get lowk motor for $2950,and will do so if necessary peter






















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Reply By: Member - peter C (VIC) - Tuesday, Jun 03, 2008 at 13:57

Tuesday, Jun 03, 2008 at 13:57
i also wonder if diesel/gas conversion would eliminate black smoke as i understand that the smoke is unburnt diesel peter
AnswerID: 307514

Follow Up By: Member - Footloose - Tuesday, Jun 03, 2008 at 14:51

Tuesday, Jun 03, 2008 at 14:51
Can you have it's compression tested ?
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FollowupID: 573353

Reply By: Member - David P (VIC) - Tuesday, Jun 03, 2008 at 14:52

Tuesday, Jun 03, 2008 at 14:52
I wonder what the compressions are like. Sounds like over-fuelling or worn piston/bores???
AnswerID: 307524

Reply By: MYMYTPAJ - Tuesday, Jun 03, 2008 at 16:04

Tuesday, Jun 03, 2008 at 16:04
Gday Peter,, i have the 2.3TD in mine & had a similar problem which caused masses of smoke to pour out the back while under load, gutless performance & use oil to the tune of 1litre per 20 klm,, everyone told me it was the rings & it was knackered & i'd be up for $3K for a low K engine,, turned out to be the turbo seal & i had a spare turbo from a wreck in the shed, which fixed the problem,,,,for free!!
May not be your solution, but it may be worth checking other possibilities before hauling out a mighty pajero engine that at 350,000k's is only just bedding in for a lifetime of trouble-fee service?

best of luck.

Irish
AnswerID: 307536

Follow Up By: Member - Burra - Tuesday, Jun 03, 2008 at 19:24

Tuesday, Jun 03, 2008 at 19:24
Same story a while ago.After a air fuel meter and an ecu unit were tested,the turbo itself needed replacing. It took the mechs two weeks to work it out.Stuffed up my hols bigtime. And they were long time mechs with experience on my vehicle [not a truck]
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FollowupID: 573411

Reply By: _gmd_pps - Tuesday, Jun 03, 2008 at 16:40

Tuesday, Jun 03, 2008 at 16:40
something like this ??

http://youtube.com/watch?v=AYaU1v1VIAc

some people put switches in their diesels to create black smoke.
So you are ahead of some

black smoke means unburnt fuel ...
probably an airflow/temperature/boost problem and/or turbo.
Injectors are only responsible when they allow too much flow
I don't know the Pajeros so would not have a tip.

good luck
gmd

AnswerID: 307542

Follow Up By: Member - Warfer (VIC) - Tuesday, Jun 03, 2008 at 17:25

Tuesday, Jun 03, 2008 at 17:25
Thats Funny ,a bank robbers dream lol


Cheers
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FollowupID: 573384

Reply By: madfisher - Tuesday, Jun 03, 2008 at 17:59

Tuesday, Jun 03, 2008 at 17:59
The fact that you have fitted new glow plugs and it is still hard to start would indicate worn rings . As Footy said get a compression test
Cheers Pete
AnswerID: 307556

Reply By: Hairy (NT) - Tuesday, Jun 03, 2008 at 22:14

Tuesday, Jun 03, 2008 at 22:14
Id start to worry when it STOPPED blowing smoke????
AnswerID: 307621

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