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2005 Infiniti FX35 Base 4dr 2WD

2005 Infiniti FX35
Trim Info:
Rear Wheel Drive, 4 Door SUV, 2WD Sport Utility
17 mpg city / 23 mpg hwy
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September 18, 2009, 2:56 pm

Diane M
 

Question: what causes blue smoke from exhaust on start up after driven all day

After driving off and on all day, there is blue smoke from the exhaust on start up


September 22, 2009, 10:24 am

Tyler O
Expert Mechanic

Usually smoke with a blue tint is engine oil burning. Could be piston rings, valve steam seals or valve guides.

Does it make the most smoke when starting up cold or after sitting for a while? If so it's probably the valve steam seals.


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