Smoking...

[podicus]

I have mentioned this problem before, but didnt really get any help :(

So, let's try again...

My 2006 2.2d4d t3-x smokes when cold.

With light acceleration (low - mid revvs) there is a plume of black smoke.

When she warms up it's not so bad. She still smokes - but only when I boot it.

I mentioned this to the dealer when she was serviced, and they did an emissions test and found nothing wrong

Any comments (except it's because it's a diesel) would be gratefully received.

Thanks

m

[Rossi46]

My 2.0 D4D puffs a bit of black smoke too but mainly on acceleration. Black smoke is often indicative of clogged injectors or a blocked air filter.

I presume they changed the air filter at the service,so you can probably rule that out.

It would be worth running a bottle of injector cleaner through the system, and giving it a good long run in my opinion.

Failing this take it back to the dealer and express your concerns, your warranty should give you peace of mind.

Good luck getting it sorted :)

Any comments (except it's because it's a diesel) would be gratefully received.

To be honest mate, this is a valid point. Diesels do smoke a bit, especially when cold.

[podicus]

thanks for replying...

...i wouldn't normally be worried about this - but it is quite embarrasing having all that smoke pouring out...

i shall wait for a few days and then speak with the dealer...

cheers.

m

[bristolmotorspeedway]

thanks for replying...

...i wouldn't normally be worried about this - but it is quite embarrasing having all that smoke pouring out...

i shall wait for a few days and then speak with the dealer...

cheers.

m

Hi Podicus,

My 2.2 D4-D emits virtually no smoke, hot or cold. In fact, I was followed for a few miles by my father today - I asked him how smoky the car was, and he said there was no visible smoke (the car had been parked for a couple of hours in the cold when started). Do you notice the smoke in the mirror? If so, I would say this is not normal. Occasionally I see a 'haze' in headlights behind in the dark, but only if accelerating reasonably hard through second and third. If you have smoke 'pouring out' (VAG style) then that is most unusual for a Toyota CR diesel. Ask to try a dealer demonstrator for comparison if you are not satisfied with their answers.

[Starensis]

If it's from cold, check your glow plugs are operating correctly.

Try leaving the ignition ON until glow plug light goes out then start car. Diesels need the heat when cold.

[moonstone mart]

The new diesels dont smoke that i have seen. There is an issue with oil control rings on the pistons though making them burn oil, but even with this i dont usually see much smoke out of the exhaust.

Have you checked your oil level lately? If the car is using more than a litre of oil/1000miles your dealership should remove the head, check the bores and if scored fit a new short motor. If the bores arent scored then modified pistons/rings are fitted.

Mart.

[TangoD4D]

I have a diesel Avensis (2001) and only do local stuff really and notice it can be a bit smoky when I accelerate going into town along the dual carriageway. When I do a proper journey and really heat up the engine it runs much better & cleaner for a couple of months and then starts the smoke a bit again.

I drive diesel ambulances and the new Merc’s use oil like crazy and they never cool down but I can tell you that they blow out lots of soot that work into every part of the ambulance station. In the old days we used petrol ambulances (8.5 mph) and nowhere near as much soot.

How about a high reving run every now and again.

[HurricaneCharlie]

How about a high reving run every now and again.

Agreed. We all drive diesels with a light foot, cos we want the best mpg, yes? This is great, but it gives unburned exhaust emissions a chance to gather in the nooks and crannies.

Try driving really hard on for a week to really blow out the crud, then a good blast once a month should hopefully cure your ills.

[igormus]

I have mentioned this problem before, but didnt really get any help :(

So, let's try again...

My 2006 2.2d4d t3-x smokes when cold.

With light acceleration (low - mid revvs) there is a plume of black smoke.

When she warms up it's not so bad. She still smokes - but only when I boot it.

I mentioned this to the dealer when she was serviced, and they did an emissions test and found nothing wrong

Any comments (except it's because it's a diesel) would be gratefully received.

Thanks

m

hello

i am in fact shocked when you state like this. the car is young but ....

i have been replying to another guy re the same problem with smoky exhaust.

ok -- look -- i admiss black smoke only at cool starting. but after no smoke is admissible at all subject to the engine has been well adjusted.

the ignition plugs are worked only to pre- heat each cylinder and they are governed by the time relay. i do not conside that all injectors are worn down. but the problem has to be found at another place. i ncase the engine is provided with T/C then you'd also conside an scavanging air output -- whether it is sufficient to burn the fuel quantity in a cycle? may be another problem with rubber timing belt. check with T/C output because it must react on your booting having rised an air quantity pushing into the cyls. may be this will be sufficient at first step. friendly speaking there are many other reasons resulting smoky exhaust. try to check with above and type the result. cheers/igor

[OldSkoO1]

It could be 2 things

glow plugs

glow plugs assist cold starts and you can notice this when you idle quite roughly when its cold. The glow plugs generate heat for the cylinders to try and get it up to a temperature high enough to burn fuel by compression when injected. If fuel isn't being burnt efficiently you will get an increase in black smoke from the unburnt fuel. Its common to have glow plugs burn out reducing the ability to heat it up enough; so this is likely to be the cause.

When up to temperature it is not a problem... but easy to fix.

2nd

it could be a restriction in air intake, anything from a blockage, soot build up maybe in exhaust or air filter

If the air intake is restricted the fuel/air mixture is disrupted and all the fuel may not have enough compression to generate enough heat to burn it all off thus creating plumes of black smoke. More likely in older cars.

Theres some other explanations like timing could be off or in extreme cases cold oil and lower Battery output can reduce crank speed so not enough compression to burn fuel but i doubt this would be the case in this weather.

[podicus]

Thanks for all your comments/replies, really appreciate it.

I have left the car at the garage today. So we shall see what they find !!

Just to catch up on a few comments:

- I don't start the engine until the glow plug coil has turned off.

- I have done a weeks worth of 'hard' driving - no affect.

Also to note, I do 60miles of motorway driving a day, sitting at around 60-70mph in sixth gear. So i wouldn't expect the car to be 'coked' up.

will keep you posted

thanks

m

[igormus]

Thanks for all your comments/replies, really appreciate it.

I have left the car at the garage today. So we shall see what they find !!

Just to catch up on a few comments:

- I don't start the engine until the glow plug coil has turned off.

- I have done a weeks worth of 'hard' driving - no affect.

Also to note, I do 60miles of motorway driving a day, sitting at around 60-70mph in sixth gear. So i wouldn't expect the car to be 'coked' up.

will keep you posted

thanks

m

hi

i feel you're fed up with diesel :D .

in case you can not start whilst plugs are ON (are you sure that they are ON ????) -- OK in case you're 1000% sure of it then you've problem with injection.

there are several problems, such as : fuel filter clogging; prime fuel filter in the tank (!); too much air in fuel system both after HP pump and before; suction of an air via filter cover (common case due to non-accuracy when assembled); failure of pilot solenoids installed on each fuel valve; failure of plugs control relay; and anothers connected with HP pump itself. By the way what is the fuel quality you use?? Are you sure it can be used on modern engines? I normally use a small settle tank in my garrage to check with drain purity before filling thte tank. cheers/igor

[podicus]

Had phone call from garage, 'we have fixed the problem'... !!

briefly; they found that the emissions were too high and that there was a blockage. So they have cleaned out the blockage and reprogrammed the ECU !!

I shall get more details later when I collect the car...

shame they couldnt find this problem when i had her serviced.

not too fed up with diesels,

m

[igormus]

Had phone call from garage, 'we have fixed the problem'... !!

briefly; they found that the emissions were too high and that there was a blockage. So they have cleaned out the blockage and reprogrammed the ECU !!

I shall get more details later when I collect the car...

shame they couldnt find this problem when i had her serviced.

not too fed up with diesels,

m

hello

even you have removed a blockade -- the initial problem with smoky will remain the same and the emission will again activate this blockade.

what do you think?

cheers/igor

[podicus]

hello

even you have removed a blockade -- the initial problem with smoky will remain the same and the emission will again activate this blockade.

what do you think?

cheers/igor

You're probably right. I could expect this problem to re-occur.

Anyway, I was told that the EGR was blocked and they 're-programmed' the ECU as a result. But I suspect that they 'reset' the ECU instead

As for the smoke - well there was a little last night - but I will know for sure tonight when I go home. So fingers crossed...

Thanks for all your comments guys, starting to restore my faith in this forum...

regards

m