2008 Nissan Micra Blowing smoke on startup

Tiny
ROCKINUPTHEBIGSTUFF
  • MEMBER
  • 2008 NISSAN MICRA
  • 1.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 30,000 MILES
My Girlfriend has an issue with her car (which I have not seen yet), basically occasionally it will blow smoke on start up. She believes its a grey smoke and it smells oily. We think its only happens after she has done longer drives 1hr + on her next start up its blowing smoke. It doesn't seem to blow smoke after short drives etc.
It recently had a service (as we just bought it) and does not seem to have to much oil.
I was thinking it might be the valve stem seals but the inconsistency is confusing me.

Any help or ideas would be great
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Monday, September 15th, 2014 AT 7:00 PM

1 Reply

Tiny
MHPAUTOS
  • EXPERT
May well be stem seals, the oil when hot and lays around the seals will leak down over night and pool a small amount on the valve stem and if bad on the head of the valve, when hot, and doing a re start after a short stop not enough oil has made its way done to burn, it will still burn oil hot but in small portions that it is hard to see, a good tell tail is ash deposits on spark plugs as well.
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Tuesday, September 16th, 2014 AT 2:56 AM

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