Smoking on cold start FD
#1
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Smoking on cold start FD
My fd smokes for about 2 minuts on cold days.only sits overnight i drive it every day. Smoke looks blue. Curently have 10w30 synthetic in it. I see a lot of ppl use 20w50. Has no OMP (premix with idemitsu) . Could it be worn turbo bearings leaking oil into the exhaust? Rebuilt the engine myself about 1,500 miles ago. And had housings lapped at mazdatrix.
#4
Im no expert, but as Sgtblue stated, blue smoke is attributed by an oil leak in your engine or turbos. If it goes away upon warming up then i would presume a seal is a bit leaky causing oil to "puddle" in the bottom of the housing, only to be burn away upon start-up.
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#10
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Join Date: Mar 2015
Location: Minneapolis MN
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I've heard it's fairly normal especially if the engine is getting "tired"... As I understand it it's nothing to worry about as long as it goes away once it warms up.
#11
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iTrader: (3)
i might have gone along with leaky oil seals, but with the recent rebuild, i don't know.
did you use all new seals and bearings? if so, it could be the seals settling - maybe allowing some overnight leakage. it may also have done you some good to use mineral-based oil up to this point and then switch to your synthetic when the engine was done with break-in.
have you had to add any oil in the 1500 miles?
have you had to add any oil in the 1500 miles?
#15
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Thread Starter
Problem solved. Picked up an adaptronic ecu as part of my build and my tunner just messed with the timming and it hasn't smoked since. So all the smoke was real bad combustion. Im thinking it had a lot to with the bigger port job also
#17
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Yeah it was all bad combustion gases. My oil level never changed so i was kinda stumped before. And i wasn't losing coolant either. But didnt think the running rich issue could cause so much smoke on warm up.
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