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      07-12-2021, 03:58 PM   #1
Harry83961
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N54 13i coupe blue smoke at junctions

I have recently noticed my car puff out a cloud of blue(ish) smoke on the deceleration to a junction from around 2k revs or if I'm nursing around town but not when the car is fully warm up to half way on the oil temp gauge, the car is stage 2+ mhd with all the supporting hardware and run catless DPs and RB pcv valve. The turbos were rebuilt at the start of the year (may 21) along with a walnut blast and valve cover and gaskets ect once the car is fully warm up to temp I don't notice any smoke at all could this be because I am running cat less downpipes or is there something more sinister I should be looking for any help would be appreciated, should also note the car still pulls very hard and there are no dme codes when I plug in the mhd obd adapter or noticed any unusual oil consumption to raise any concerns
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      07-13-2021, 01:43 PM   #2
G3min1
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You should do a compression and leak down test. Do you have an OCC?

Common blue smoke culprits are turbo seals, injectors, pcv valve, or valve stems.
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      07-13-2021, 11:12 PM   #3
ferocity02
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That's usually a sign of worn turbo bearings/seals. I
You can pull the DPs and check for oil wetness around the turbine.
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      07-24-2021, 10:33 PM   #4
Emanyankee
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Coming from my vw experience (08 stage 2 gti/ 2.0 baby turbo)

Blue smoke from exhausts means you're running rich
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