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This is because your valve seals are getting old and when your vehicle is turned off, the oil from the heads seaps down the valve and sits on your exhaust valve, when you start up, it all gets burned up. if you continue to see blue smoke after 5 minutes of operation, you may have worn piston rings.

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12y ago
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Q: Why does my 1998 kj Ford Laser blow blue smoke on cold start up's?
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