Help. Cupra tdi really smokey

[GlanzaV]

Could be about right... when you say the oil is "full" you haven't over-filled it have you? That will cause smoke!

P.S. I'm at work so can't see the videos

 

[Smee]

no its was filled in last service 2k ago so it hasnt lost any oil since then.

any more ideas? lol

Lee

 

[Smee]

Next Update.

took it to my mate who works for seat and he watched me drive up the road. he says its a blue smoke.

he wasnt to sure what it might be.

took a trip to clive attew and he has booked it in for Monday for a diagnostics check.

basically hes not 100% what it might be started going on about turbo, or injector seals maybe even just a silly boost leak.

he thought it was strange how it was worse on warm up only

Lee

 

[ibiza_1.4tdi]

have you checked if there is oil in the bottom of the intercooler pipe work, myn had the same issue and looks the same as your video, it was oil collecting in the bottom of intercooler pipe work. myn is a 1.9tdi fr though. may be worth checking

 

[Smee]

I'll have it checked. Did yours stop smoking once it warmed up?

 

[Nath.]

Looking at the vids I would not call it blue smoke, I would call it grey smoke from un burned fuel. I reckon you have a small boost leak. Once warm the engine burns cleaner and the smoke goes.

It sounds a bit wooshy, do you have an air box mod, if not the woosh noise could be the same boost leak

 

[Damoegan]

Looking at the vids I would not call it blue smoke, I would call it grey smoke from un burned fuel. I reckon you have a small boost leak. Once warm the engine burns cleaner and the smoke goes.

It sounds a bit wooshy, do you have an air box mod, if not the woosh noise could be the same boost leak

I agree with Nath. Also if its one of the larger boost pipes it could seal its self up once it heats up.

 

[muddyboots]

have you checked if there is oil in the bottom of the intercooler pipe work

All TDIs collect oil in the intake pipework / intercooler, so that won't give you many clues unfortunately.

 

[muddyboots]

I'd log the temps being reported by the coolant sensors and fuel temp sensors, from the moment the engine is first started cold before any oil/coolant/fuel has had a chance to warm up - to see if the values look within normal ranges.
When you first start the engine in the morning you'd expect them all to report temps somewhere near outside ambient temp (but will start to change fairly quickly, which is why you'd want to log right from startup).

If any of these sensors were reporting the engine being hot when it's actually cold (but still within allowable ranges so the ECU doesn't throw a fault), this could cause overfuelling that's worse when the engine is cold, but less noticeable when it's warm.

VAG coolant temp sensors are renowned for failing.

 

[muddyboots]

And a long shot, probably highly unlikely but you never know...

Could the ECU have undergone some adaptation to suit the driving style of being hammered round a track, and it's just taking a while to readjust to normality ?

Just wondered, as you say it's died down a bit since you first noticed it.



Also - not sure about the idea of diesel collecting in the exhaust while it was on the track, I'd have thought the exhaust system would have been so hot from being thrashed it would have burnt off there and then

 

[Damoegan]

And a long shot, probably highly unlikely but you never know...

Could the ECU have undergone some adaptation to suit the driving style of being hammered round a track, and it's just taking a while to readjust to normality ?

Just wondered, as you say it's died down a bit since you first noticed it.

Good shout mate. Might be worth disconecting the battery for a few mins to reset everything.

Also - not sure about the idea of diesel collecting in the exhaust while it was on the track, I'd have thought the exhaust system would have been so hot from being thrashed it would have burnt off there and then

I agree with that too mate.

 

[Smee]

Thanks for the input. Just travelled to Southampton in it. Been good as gold. Bit of smoke this morning but again gone once warmed up.

I guess te guys that do the diagnostic check will know. I don't have vagcom so i can't do those checks muddyboots

thanks

lee

 

[Smee]

Little update. Smoke seems to have nearly stopped by it's self. I'm not happy still so dropped it off at local specialist to diagnostic it tomorrow. Lets see what happens.

Lee

 

[Smee]

Right ok

like i said to Clive when i dropped it off the smoking has stopped but i think it must be a boost leak.

he checked everything and nothing wrong with it. no faults, hits all boost requests, hitting the 180bhp mild remap i had on it which Clive was even more impressed with seems he really likes the map i have on my car. hes a revo dealer too.

he said he cant explain the smoke i was seeing, must of been fluid in the exhaust

Lee