Smokey Diesel?

[ed146]

I currently have a '96 406 1.9td and for a little while now shes been smoking more than usual. I always get a cloud of blue when first started which i'm really worried about, but its the black smoke which is concerning me. It smokes badly on acceleration and still smokes if i sit at 1500 - 200rpm in 4th for example. Its never been this bad really so need to start investigating.

Any ideas where to start looking first?

Kind Regards, Ed.

[frankie406]

Possible unburnt fuel could be bad diesel or injector problems? Have you tried some additive in your fuel like millers eco max i use it in mine ive 143000 miles an no smoke

[ed146]

I haven't tried anything with it yet, I've lived with it until now but getting quite bad these days. I'll try an addictive to start with and see how that works.

I did think it could be the turbo as the turbo is whining a bit more than it used to, but wouldn't that be blue smoke?? It still pulls well, but just smokes when you put your foot down...

[frankie406]

Does blue smoke not mean its burning oil? Also ive cleaned egr valve with a spray cleaner ya just take off flexi hose on air box and spray whilst engine is running

[bobovis]

Originally Posted by ed146

but its the black smoke which is concerning me. It smokes badly on acceleration and still smokes if i sit at 1500 - 200rpm in 4th for example.

Check the air flow meter and injectors. Bad mixture air and diesel make black smoke.

[davidireland]

Sticking valve, happens on this engine with high mileage. XUD9TE engine as fas as i remember.

[mikezzr]

possible blocked or dirty air filter ? fuel filters too alter how well your motor will run.

there cheap and easy to replace too

[risky1]

If its putting out alot of black smoke maybe remove and blank off the vac hoses supplying the egr valve,When i had 110k mls on mine it lost alot of power and bellowed out black smoke...removing the vac hoses to the egr solved the problem..
I still find at times if i drive normally for say 20 mls and then all of a sudden floor it,black smoke can still bellows out....It really p1sses off people driving soft tops...
With the blue smoke i also get it for the first mile or so after startup..not to worried about it as it has 224k mls on the clock..