black smoke, no turbo - after pop!

Hi all

First time post, but certainly not first time visit - as an amateur I've done a few jobs after careful research on this forum, so thanks firstly!!

A couple of weeks ago my TD4 started bellowing blue smoke when accelerating when the engine was cold. Having read around some of the threads here I thought the EGR was the culprit, so yesterday I took it off and gave it a good cleaning (haven't disconnected yet). I also cleaned the rubber intake hoses as they were pretty manky and oily.

Put it all back together again, drove down the road and heard a "pop" from the engine. initially I thought this was just one of the rubber hoses coming off as maybe hadn't tightened the jubilee clip enough - but on closer inspection appeared not to be the case.

Since then I've lost my turbo - above 2000 revs is just sluggish and the blue smoke has turned a horrible black!!

What could this be? Could it be a split/burst turbo hose or could one have come loose? I think my MAF sensor is probably needing a clean, but can't see things changing so horribly after just cleaning the EGR?

Thoughts/suggestions more than welcome - plan to get my hands dirty when I get home.

its' got the symptoms of a burst intercooler hose, often they split underneath where it's not as easy to spot.

blowing sounds and oil leak should help locate it.

Yep sounds like inter hose. Mine seems to eat the small elbow one. Guess the 90 degree bend does not help.

The Turbo hose is a good place to start. The only question that I have is why is the engine over fuelling (Black smoke) if the boost pressure is down. I know its a completely different lump but my L series blew an induction hose right off. Yes it went sluggish but no black smoke...

When the elbow went on mine it smoked like a dreadnought. It was fun till I got the hose imported to smut the tailgaters behind

Must be a TD4 thing then.

yep, once the hose was on it stopped. I was safe from the Kyoto agreement again.

Well thanks to you all for your helpful replies! It turned out to be one of the intercooler hoses that had managed to "pop" off. Reconnected, tightened (a lot!) the jubilee clip and vrooom! Nice 10 minute job

Fancied doing the MAF sensor at the same time as I've noticed that it has been getting slightly more sluggish as the months go by - but couldn't quite figure out how to disconnect the whole assembly. I found one of the spring clips, but couldn't find the other. Anyway, decided it was a job for another day - so will research it before tackling it

Thanks again

Its always helpful here

Wey hey, another happy Hippo.

md2k9 said:

Fancied doing the MAF sensor at the same time as I've noticed that it has been getting slightly more sluggish as the months go by - but couldn't quite figure out how to disconnect the whole assembly.

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you don't have to disconnect the whole assembly, simply the electrical connector. this will then prevent the duff signals reaching the ecu, which will simply substitute a fixed value to keep it running.

if the engine improves with it disconnected, then it needs replacing. if no change, it's fine put it back.