Blue smoke from exhaust???

[ElSpeedDiablo]

I got my car back from the body shop yesterday, after they had my car for a week to replace my rear bumper due to someone hitting me in a parking lot at work. Anyways after I got my car back let her warm up even though the weather was nice (68). I started to give it a little gas in the lot to reverse out of the spot they left her in an I looked in my mirror and I saw a cloud of what appeared to be blue or light blue smoke. Now the car was not acting funny or anything, I went to fill up on gas and put my foot down to have a little fun sense I'd been driving around in a mazda6, which was not fun at all haha. After some fun driving, I didn't see any smoke or anything, but then it started to smell like gas. Now their was an old car behind me so I couldn't really tell if it was his car or my car, so I pulled up about half a mile later and the car sounded fine, with no smoke to be seen. Then later that night I went out to grab a bite to eat and my friend who saw me leave said he saw some smoke coming from my exhaust also and he swears it was blue. So can some of you guys tell me what could be causing this, because I don't have a downpipe, my mod list is my sig. I know that blue smoke means that the car is burning oil so I'm very concerned. I'm going for an oil change today, it's about that time I get one anyways and I'm going to see what mazda has to say about it, my dealership knows all the mods on the car I have except the cobb ap. Thanks for any information!

Ray

 

[john blutarski]

Ray, does it happen usually after idling for a bit? What oil weight are you running? You said you're going for an oil change today... does the dealership do your changes? Are they putting in 5w20? I hope not...

 

[ElSpeedDiablo]

Yeah the car is getting 5w30, which is what is recommended. She is not getting synthetic, which is weird I been told that synthetic on our cars isn't very good. The some appeared after idling a little bit after it was given to me after she was sitting in a shop for 5 days. After I got the oil changed I haven't seen the smoke, so I'm crossing my fingers for now and going to do some logging this weekend on the ap to check everything out. Thanks for the help Chris!

 

[blackflame]

Sounds to me like its a turbo issue. Pull your intake and check for shaftplay. Then pull an intercooler pipe and see if there is any oil coated in the piping. Just an idea though.

For further investigation, to see if its a turbo issue or motor issue. Pull your exhaust manifold and see if there is any oil coating in the exhaust ports in the head or in the manifold. If not then check the O2 housing after the turbo.

 

[evilmonkey]

Could be ring blow by also

 

[ElSpeedDiablo]

Sorry guys haven't been on for a few days, but I had the car looked at by the dealer and they said that nothing was wrong with the turbo or the engine. I also ran some test with the ap and everything seems to be fine. I haven't seen the smoke sense then, so I think it's fine.