White smoke when idling

Asked by Garry Sep 26, 2020 at 03:10 AM about the 2007 Mazda MAZDASPEED6 Sport

Question type: Car Customization

Custom made exhaust system, down
pipes,.and front intercooler. Just picked up
today. Now White smoke appears from rear
pipes on idle.
Help..

2 Answers

40,180

That is an indication of burning coolant. Did the engine recently overheat?

635

Not burning coolant issue. When you did the exhaust did you take out the catalytic converter? If so, that may be the cause. Does the "smoke" go away after the engine is at operating temp? If so, it may be normal condinsation. Keep an eye for black smoke at throttle or while driving ;)

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