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1999 Mitsubishi RVR.

Small amount water and smoke come out in tail pipe when I first turn it on in the day. But sometimes no water and smoke come out. I don't know what is the problem or it is normal.

What is the white smoke that comes out of my tail pipe when I first start my car?

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  • Does the smoke only happen for a little bit, or does it continue even after the car is warmed up? Smell the exhaust ... does it have a sweet smell to it? Jan 24 '17 at 2:05
  • I smell like water. No sweet smell on it. A little bit happen and the water last for 5minutes but the smoke last for 10minutes
    – Marvin
    Jan 24 '17 at 9:14
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    Are you having to fill up the coolant? Does it become low over time? Jan 24 '17 at 11:17
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It sounds to me like you have condensation forming in the exhaust system. When you start up the hot exhaust gases boil it off and you get a puff of steam. you don't say exactly where you live, but does the smoke come and go with humidity or dewpoint?

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  • I live in queenstown new zealand. How many minutes test to warm up the engine. And check the exhaust? Its hot here now.
    – Marvin
    Jan 24 '17 at 9:12
  • Well, my theory doesn't make sense given then amount of time you say the smoke is happening. Condensation would be a puff for a few seconds. @paulster is asking good questions that would give better info.
    – enderw88
    Jan 25 '17 at 12:51
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It also could be drain down from leaky valves where oil is dripping into the combustion chamber. Are you loosing any oil? When the white smoke comes out - if you hold a piece of glass, does it condense and then go away or does some oily residue remain?

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White smoke is usually moisture, oil would have a blueish tint to the smoke. Also, condensation can from high humidity which would accumulate in the exhaust system.

Check your oil and look for moisture, a blown/leaky head gasket could cause the white smoke. To test it, after the car has been running for a while and engine temperature has been brought up to up normal, shut off your motor and wait a few minutes before restarting. If the there still is white smoke, I would seriously check the head gasket.

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