Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust

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Tue 8 Feb 2011 16:43
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Alky

Hi, hope you can help, i bought my motorhome almost a year ago, it runs very well returns 30 mpg, does not use or lose oil or water, but ever since i bought it, has smoked on start up . This is not noticeable during normal driving, but when sitting idling you can smell a fuel/parafin odour, and a light blueish smoke is noticeable. Recently i put the van off road on sorn for two months, now when i start up there is loads of smoke which lessens as the engine heats up but does not go away. The van has only done 26k, can i have your thoughts please.

Thanks Jim

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Tue 8 Feb 2011 16:46
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - track

Sounds like stem seals if its mainly start up.

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Tue 8 Feb 2011 16:54
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Alky

Thanks Track, most of the smoke is on start up, but it still does it when idling for a while after a long run.

Jim

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Tue 8 Feb 2011 17:06
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Peter.N.

It sounds as though its burning oil either through bore wear or down the valve guides but if you are sure its not using any, and it doesn't need to use much to make it smoke, it must be partially burnt fuel due to low compression, again either due to leaky valves or bore wear.

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Tue 8 Feb 2011 17:24
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Alky

Thanks Peter, it doesn't seem to have low power, looks like the concencus is on the valve guides.

Jim

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Tue 8 Feb 2011 21:12
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Peter.N.

If its only burning a little it won't affect the power, in fact it might be up a bit as the engine will be nice and loose. If it goes OK I wouldn't worry about it.

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Tue 8 Feb 2011 21:18
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - unthrottled

Easy way to test a DI diesel for low compression is simply to try to start it from cold. Diesels are really sensitive to low compression at cranking speeds. Also, it should idle badly, since not all cylinders will have equally worn rings/bores, so one or two cylinders will be slower to fire up than the others. If it starts ok, I doubt it's compression related.

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Tue 8 Feb 2011 21:14
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - unthrottled

Hmm. Petrols normally pull oil down from the valve guides only under high vacuum situations. Diesels never see high vacuum conditions.

nb: This is a 'logic' observation. If someone has empirical evidence of diesels burning oil from the valve guides, I stand corrected!

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Wed 9 Feb 2011 00:17
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Peter.N.

You can get it on diesels on start up as when its been standing for some time the oil can just run down the guides, once its burnt off though you don't usually get more smoke, most of my experience has been on old IDI diesels so don't know to much about modern ones, I'm sure the Peugeot will be an IDI though, the Hdi engines are 2.0 litre.

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Wed 9 Feb 2011 00:56
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Alky

Thanks to all you guys that have pitched in on this subject, i'm thinking it's probably guide seals, as this van did not do much work before i acquired it, it is an earlier model not an hdi. Don't know if it's done enough miles to have worn cylinders. Just hope it passes the next mot, on the gas test.

Thanks Again Jim

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Wed 9 Feb 2011 03:15
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - unthrottled

Peter-I saw the 2002 date and automatically assumed it was HDi-pretty thick. The rough idle test won't work either.

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Wed 9 Feb 2011 15:10
Peugeot Boxer 2002 1.9 diesel Motorhome - Blueish smoke from Exhaust - Peter.N.

That's OK, I would have assumed the same except for the 1.9. Peugeot/Citroen engines are the only ones I know much about. They did go on using the 1.9 in some vehicles after the brought the Hdi out, very often in non turbo form - wouldn't pull the skin off a rice pudding.

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