It seems one of my roomates informed me that when I am WOT and nearing the upper 5k RPM marks my car emmits blue exhaust. I am hoping that it isnt the rings ( or that the rings havent set properly) I only use Mobil 1 full synthetic oil..

 

you sure its blue and not black?

 

How many miles on the car and what year is it?

 

fwiw I have seen a few JCW cars smoke on acceleration. They smell rich too when u follow them. Has your car got bigger injectors than stock?...

 

I'm no mechanic, but I know blue smoke out the exhaust means you are burning oil.

I know in older cars this usually happens from worn gaskets or o-rings and oil begins to leak into a cylinder, which causes misfires and fouls the spark plug.

Do you have any mods on your MCS?

 

05' Cooper S
Nearing the 56k mark

 

He said that it STARTED black ( which i know is normal for a car with boost ) and then near the upper RPMs puffed blue.

 

I noticed that too

 

Yes My MCS is modded, but only with the basics. CAI/Pulley/ etc. (Nothing major.)

 

"Has your car got bigger injectors than stock?"
Negative.

 

WOW almost 30k miles a year!?

 

Have you done any head work and or an upgraded head?

 

hehe, I like to drive

 

It could be the fact of the way you have driven the car and the maintenance of it or lack thereof, just assuming of course. Doing the process of elimination.

 

Refer to an above post. ( only basic mods )

 

yeah got that, I was posting the question while you had yours on.

 

No problem

Id say that I broke it in almost to spec. And the oil changes were done by my local Mini dealership until a few months back.

 

As for driving it hard; I am a member at the local race club ( Chin Motorsports) and have ran tracks such as Homestead.

 

I think that most of the blue smoke problems are caused mostly by oil buildup in the intercooler. I had this minor issue which went away upon adding an oil catch can. Since the oil tends to accumulate via partial throttle applications when the PCV valve is working (some manifold vacuum), oil will mist and condense in the intercooler. If it has a chance to accumulate in large amounts, a WOT blast will 'sweep' some oil from the nooks in the intercooler and boots into the engine and burn it off. It's not a big issue, but can foul plugs if it's happening a lot.

Clean out the IC before making some full throttle runs and see if the smoke recurs. I bet it doesnt.

 

then if it does recurr ... do a compression test .

 

Hello
Blue smoke it is because your car is burning Oil... is not a good thing...

A question, when i start my JCW he makes black smoke... it is normal?

Best Regards

 

I run big injectors and cold t-stat. This combo makes the car to rich on cold days - even with correct GIAC flash. I load up carbon in the cat and exaust and a hard burst will give black smoke for a few seconds while it clears out. I may change back to a stock t-stat for winter and see if that fixes it.
Wesport