Why is my car blowing oil smoke from the exhaust at startup?
Vehicles often blow oil smoke shortly after starting up when they have been sitting for a while, though the smoke typically clears up and stops after about a minute. This momentary surge of smoke points to oil leaking past internal seals or components while parked, which then burns off once the engine runs.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
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Why is my car blowing oil smoke from the exhaust at startup?
- 1Checking valve stem sealsDid this help you?
- 2Checking for a blown head gasketDid this help you?
- 3Checking or replacing valve stem seals where oil leaks through overnightDid this help you?
- 4Replacing valve stem sealsDid this help you?
- 5Checking for stuck piston ringsDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Have anyone had the oil smoke from the exhaust at start up after it sits for a little while?”source ↗
“It seems to do this for about a minute then stops.”source ↗
“The seller said he thought it was a stuck piston ring. I was kind of thinking valve stem seals. It just feels like it takes longer to clear up than what people describe for valve stem seals”source ↗
Where this came up
People with this problem also raised
- 5Smoke and oil leaking from engine bay after driving
- 3Heavy exhaust smoke and diesel smell on cold start
- 9Engine smoke and burnt coolant smell while driving
- 3Propane boiler making puffing exhaust noise in extreme cold
- 3Cylinder misfire and white smoke from exhaust
- 6Why is there a raw fuel smell and rough idle when stopped?