Question about best oil for timing chain rattle at startup on 06 Colorado 2.8L (Atlas engine)

Joined
Mar 4, 2017
Messages
24,746
Location
...
I can't see how any oil is going to stop chain noise. I guess if you're in that period where all the oil may or may not have drained out of the tensioner by the time you crank it again, a thicker oil may drain out slower.

You almost certainly have a leaky tensioner. Perhaps the "timing kit" didn't come with new tensioners, or it's got a bad tensioner out of the box.


I wonder if the OP can tell us if this is a OEM kit or something else picked up as a bargain?
 
Joined
Jun 15, 2010
Messages
2,589
Location
TX
Are you sure it’s not lifter or hydraulic lash adjuster noise? Just playing devils advocate, they can sound very similar to timing chain noise at startup.
 
Top