Hi All

My Dad has just bought a 55 reg 1.9 jtd Doblo Cargo which is probably best described as a project. At least thats a polite way of talking about it!

It has a few electrical problems such as the glow plug light glows for a while after starting, the brake lights dont work and neither does the central locking, assuming it has central locking? Also a "iffy" ignition lock that requires a up and down wiggle of the key to get it turn. We'll work through these but if anyone has had these problems and knows teh answers and can save us some time and me from trawling the archives I'd be grateful to hear them.

The main problem is it smokes. It smokes on start up and if you give it a bootful and still smokes a bit when holding a constant speed. We hoped the smoking would be EGR/MAF but its blue smoke and does smell like burning oil? Any ideas on the cause of this? Anyone had a 1.9 that burnt oil?

Many thanks.

Mine's done 94 thou and has never burnt oil I'm afraid.

My glow plug light meant that one plug was out. They are all replaced but in the meantime it still starts very badly first time in the cold - like now! Then runs perfectly and starts easily. All the new plugs are working...

A mystery...

Good luck anyway.

I wouldnt spend any time/money fixing the other stuff until the engine is sorted.

Worth taking to garage to get injector spill and cylinder compression tests to find out the source of that smoke.

Its only done 126k miles and drove really well on the way home. Its just had £600 spent on fitting a new clutch in it. It all changed gear smoothly and ride was smooth without and vibrations or clunks, knocks or whirrs etc. So part from the aforementioned faults it's okay. He is actually quite pleased with it and said if the head has to come off so be it.

My money was on the smoke being emission related but when we saw it I thought it was oil but he went ahead and bought it anyway. Shame it wasn't emission related but ho hum. He is going to start checking filters and breathers and see how its breathing but I reckon it'll be a head off job. Rather him than me...

I went round yesterday and had a loook ove rit with him yesterday. I removed the EGR and MAF for the hell of it really and the MAF element was shiny clean and the egr valve was dirty but not clogged and moved freely. Is there a way to power these up and test the valve is actually working?

I think it may well be the turbo seals. On start up there is no initial smoke and then it starts coming through but rev it and it fogs the place out! Am I right in thinking this is easily confirmed by removing the pipe to see if it has oil in there?

There is oil in the connecting pipes soit does look like the turbo seals have gone. Anyone ever removed a turbo from one of these? Looks like you could get it from underneath or is it best to have the rad and grill out?

Finally got to this now! Other projects had taken precedent an a hip replacement o for my father-in-law meant this got parked up until now. So he took the rads out and removed some hoses and we had a look. Well you can grab hold of the impeller and move it about like you're stirring a cup of tea with a tea spoon. I'm guessing that aint right!

Well we fitted a second hand "known good" turbo but it still smokes. Sort of a whiteish smoke but still smells like oil burning? Ran it for a while thinking it might be burning off residue, but as soon as you rev it out the smoke pours. Took the outlet pipe off the turbo and wiped around with clean tissue but dry as a bone?

We did flush out the intercooler and it had a good cup of oil in it, hence we flushed the thing with petrol.

The cannister thing at the exhaust where it meets the manifold, what is that, a DPF? My father in law thinks that was full of oil.

It now has the engine management light on, which is in red, and wasn't on before we fitted the turbo? Unplugged the MAF, MAP and EGR but to no avail.

Thats as far as we got last night. Thoughts?

I wouldn't be so quick to lay the blame of smoke on oil being burned.

Burning oil can be caused by many things, leaking valve seals, worn valve guides, worn piston rings and/or bore linings, turbo oil seals, etc.

However, burning oil has a completely different smell to unburned diesel.

Oil has a sickly sweet smell, whereas diesel is rank and catches in your throat.

I have a similar situation with my Doblo 1.9. Some pikey a-hole stole the DPF, leaving a gaping wound in the exhaust system. The smoke was coming out from the middle of the car and when I jacked it up I found the damage.

I put a straight pipe on in the meantime, but when the car has done around 10 miles at 70mph, it want's to regenerate to clear the DPF as it doesn't know it's missing.

The stink is awful and looks for all the world like burning oil as it is thick grey/white smoke. But it definitely stinks of unburnt fuel.

If you say it smells of oil I will have to take your word as I am not there.

All turbo's tend to leak a small amount of oil via the seal, I would worry if they didn't

A cup full of oil in the intercooler is possibly the result of the age of the vehicle and it could well be that which is being burned, who know's?

So, now you have a MIL lit up, I would hazard a guess that it is because you have disconnected various sensors, EGR, MAF, etc. The fault codes will need to be deleted and see if they re-occur upon start up.

A reasonably good little code reader is available on Ebay for around 14 quid

http://www.ebay.co.uk/itm/Car-Auto-...iagnostic_Tools_Equipment&hash=item33836e8912

I have one to supplement my older OmiScan and it works well.. You get a book with all the "P" codes used in EOBD2 (European On Board Diagnostics series 2) and the only trouble it has is with reading a DPF that isn't there (but should be). It thinks it is a second (bank 2) cat and/or oxy sensor fault. As far as I can tell, the Doblo 2 (facelift) 1.9 JTD only has one cat and one oxy sensor, so if it comes up bank 2, there should be a DPF.....I stand to be corrected....

The last of the 2005's "may" have had a DPF fitted, but usually at the end of that run for that year. All 2006 on registered vehicles had to have them by law.

Anyway, confusing it is, but my first suggestion is change oil and all filters. My diesel filter cost me (trade) almost 40 quid so I imagine you will be around 50 or 60 quid.

Oil has to be 10w 40 and apparently Valvoline is best for these motors. I used Mobil 1 and still got that God awful warning to change the oil However, I know it's been done, even if the patient thinks it hasn't

Check the oil level before changing, is it high? If so, it is possible you have a run off of diesel from faulty injectors slowly filling the sump and over flowing into the inlet. This can be extremely dangerous in that it could build up and be sucked in via the inlet, causing a runaway engine.

A runaway is when the engine starts running on its own sump oil. Since a diesel is compression ignition, it requires no sparks to ignite the fuel and will run and run at high revs until it runs out of oil, then it may seize or throw a rod.

That is a possibility, it doesn't always happen. But who knows how well it was serviced previously?!?!

Then I would have the injectors flow tested, cheaper than removing the head and replacing all the gaskets.

Once again, are you certain it's oil being burned?

A bit of slack in the turbine is ok. It runs on a bearing of oil, so needs a bit of room for the shaft to float in the flow of oil. If it was tight, the oil couldn't flow

So, check all connections are tight in the electrical sensors.

Check all pipes on inlet and exhaust. Intercooling pipes on these are complicated, but easy to spot a loose hose. Less easy, but just as likely is a hole in a rubber intercooler pipe near the gearbox. They can be guilty of rubbing a hole, creating running problems like a misfire and smoking on boost.

Write a list and check off what you have looked at.

Happy New Year

Thanks for the reply, very helpful. Its been left over the Xmas period but I know just before he removed the canister thing after the manifold and said it was absolutely clogged full of oily crap. I think he burnt/cleaned/blew it out with some success. He was going to run it without the exhaust connected just to see if it still smoked as that way he'd know it wasn't just burning off residue oil.

The next job is also to remove the EGR and MAP sensor and clean them (how do you clean a MAP sensor?) as its been pumping oil everywhere I guess these are going to be messy and will need cleaning regardless of if they are at fault or not?

I've bought the lead and installed the software (i forget the name ecutune or suchlike?)on my laptop. Once he has completed the aforementioned i'll get over and find out where the hell the lead plugs in (?) and then scan it and post the results.

Smoking like anything now and is worse than before. With the exhaust unattached oil drips out of the manifold. So its deffo getting oil from somewhere!

As we were playing around with software on the other Doblo we ran a scan on this one.