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2006 Toyota Sienna CE 5dr FWD 7-Passenger (GS)

2006 Toyota Sienna
Trim Info:
Front Wheel Drive, 5 Door Reg WB, 2WD Minivans
19 mpg city / 26 mpg hwy
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March 10, 2013, 6:07 pm

John K
 

Question: cold weather engine knocks until warms up

on cold winter mornings my 2008 Sienna starts up and sounds like marbles are bouncing around inside the engine until it is warm and then it sounds quiet. No problem in the summer time, only in cold weather. Any ideas?


March 12, 2013, 1:27 pm

Tyler O
Expert Mechanic

Sounds like you might be describing a lifter or lash adjustment issue in the valve train. Hard to say for sure with out hearing it in person.

Are you using a winter viscosity oil during winter?


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March 14, 2013, 5:23 pm

John K
 

Using a 5W-30 weight year round I believe with nothing different during the winters months. Winter temps rarely go below 20 degrees where I live. Thanks for the feedback.


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