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406 HDI Smoking when pulling away
Posted: Sun May 16, 2010 12:42 am
by pugface406lx
My 2000 W 2.0HDI smokes a bit ive noticed when pulling away from lights or speed humps etc...not excessive but noticeable......just a puff of black stuff and then its ok until the next gearchange then same again...any ideas?....any remedies? (130k miles on the clock)
Cheers
pugface
Re: 406 HDI Smoking when pulling away
Posted: Sun May 16, 2010 11:03 am
by DiscoPol
have you checked the Air filter recently?? my 90 HDi was a tad smokey on acceleration for a while after a long run across Europe (1500 miles) but a basic service i.e filters and oil sorted it, with this bloody volcano thing at the moment i think air filters might be getting a bit more abuse than normal
cheap and easy check tho, just have a look at yours if its crappy replace

worth a try i reckon.
Re: 406 HDI Smoking when pulling away
Posted: Sun May 16, 2010 11:53 am
by Gary406
all diesels smoke, friend has a new diesel and it smokes more than my 1998 diesel

Re: 406 HDI Smoking when pulling away
Posted: Sun May 16, 2010 12:36 pm
by steve_earwig
Usually a stuck egr valve.
Re: 406 HDI Smoking when pulling away
Posted: Mon May 17, 2010 12:29 am
by FlySpeck
not enough air being admitted to the cylinders somehow, prob dirty air filter etc and fuel pressure rises so fast before airflow is established to match.
Re: 406 HDI Smoking when pulling away
Posted: Mon May 17, 2010 8:42 am
by Welly
EGR valve. I had the same smoke, same mileage, fitted new valve, smoke gone.
Get yourself a nosey around the valve with the engine running and reach across to the throttle pot and blip the throttle - if you can smell burnt diesel then the EGR is leaking (will look a bit sooty too).
Re: 406 HDI Smoking when pulling away
Posted: Mon May 17, 2010 9:30 pm
by lofty
My 90bhp hdi smoked a fair bit on a run to europe just, more noticable because a mate followed me all the way there in his car, apparantly pulling hard from the Autoroute toll booths it was very black.
When we got back it was due its full service, so it had air filter, fuel filter and oil change, followed by an italian tune up - its as clean as a whistle now.
The air filter was grubby though, and the fuel filter was deffinatly due.
