Mechanics

LEXUS RX 350 ENGINE PROBLEM

2007 Lexus RX 350 • 60,000 miles

My Lexus RX350 is blowing light grey smoke for 10-15 secs but only on ignition and only sometimes. It is not burning or using oil. Engine temperature, power and fuel economy are all okay. The engine has had a full professional flush. What could be causing this smoke, ignition or fuel injection problem perhaps. My local mechanics here in Australia are scratching their heads so any ideas you've got would be greatly appreciated. It's 2007 RX350 with 93000 Kms on the clock. Thanks, Simon
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Guest
February 13, 2013.




Suspect valve guides and seals when engine is turned off some intakes are open and as engine cools pressure difference sucks in a little oil which burns off on startup

Docfixit
Feb 13, 2013.


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