Smoking TD5

[Leyland1980]

Hi all,

Recently my 2004 TD5 has developed a black smoke problem, no power loss just a lot of black smoke particularly under load (gear changes and up hills) but also increased smoke when idling.

Before the smoking started I had recently done the following in response to other problems or just because they were better done sooner rather than later.


Replaced injector loom
Replaced injector seals
Replaced fuel pressure regulator

Since the smoking started I have


Replaced the air filter
Replaced turbo hoses with silicon

When I replaced the turbo hoses the old ones seemed fine no sign of delamination but they were pretty oily (or possibly dieselly) inside.

Anyone got any bright ideas?

My current thinking is that I must have buggered up the injector seal replacement and excess fuel is leaking through.

Help is deperately needed, recent problems are effecting the cars reputation with my wife!

[Leyland1980]

Just to add further to this I have remembered that I have also recently replaced the MAF and crank position sensors (these were both prior to the smoking not in response to it).

[Loubrey]

Would leaking or over fueling not smoke white rather than black?

Are you possibly using more oil than usual?

Sorry, more questions than answers, hope you get it sorted quickly!

[ezyrama]

Had a problem with a Jackaroo doing a similar thing, cleaned out the EGR valve and MAF sensor and flushed out the intercooler and air intake duct with a 4 ltr bottle of metho, what was happening was the exhaust gasses from the EGR back thru to the intake manifold were oiling up the air intake. Cleaned it all out and seemed to rectify the problem. I just did the injector seals on the Jack on the weekend due to white smoke, not black, no.4 was leaking through. Sounds like overfuelling.

[Leyland1980]

Not using oil.
No EGR ever fitted as originally sold in South Africa.

I guess the intercooler has never been cleaned so it could/does need it doing.

interms of smoke exhaust smoke colours I thought the following was the case

Black = Fuel
Blue = oil
white = water

am I wrong?


I guess one thing I should declare is that I added ~5l of used oil to the last full tank >100l in order to dispose of it, I know people who use up to 30% used oil as fuel without major smoking issues so unless it has collected in the bottom of the tank and I am now just running on oil only I didn't expect it to do this. Maybe oil disposal only on long runs from now on!

[Loubrey]

The smoke colours as you've listed them might be accurate...

You are however saying that you've got no power loss, so you might be back to the old oil in the tank...

Cheers,

Lou

[Disco Muppet]

If your black smoke coincided with putting the oil in the tank then I'd say that's your issue.
Black smoke is either air restriction or over-fueling.
My money would be on the oil

[Sitec]

Did I read that right... Waste oil in your fuel tank???? I hope not! Waste oil is exactly that... Dirty black oil containing soot from inside the engine and a whole other lot of nasties! Set light to a little bit in an old tin and watch how black and dirtily it burns. I'd be dropping the contents of the tank, filters and lines immediately, flushing them all, and preying your not up for a set of injectors... They're not cheap!!! Good luck! :o If you mean Veg oil, then not soo bad. I make and use veg oil but not in the Td5 as have been advised against it. Another reason for the planned fitting of the TD42!

[djam1]

I know a lot of guys in the UK use waste oil in TD5s they say its fine provided its been filtered.
The reading I have done indicate it should be filtered to 5 Microns

[Leyland1980]

I know a lot of guys in the UK use waste oil in TD5s they say its fine provided its been filtered.
The reading I have done indicate it should be filtered to 5 Microns

Yeah it was filtered through oil and then fuel filter prior to use. I don' do it often but me it seems like a good way to dispose of used oil rather than carting it of somewhere for disposal when they'll only burn it somewhere else.

I guess I'll put in another 100 of diesel an it should calm down.

I have heard it said that running on oil is actually beneficial to the engine but the he was running on a lot of oil so may well have been biased!