Join Date: Jun 2011
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Changed oil, Now can hear the timing chain making noise???
I've had and messed with many cars in my life but this has never happened. I have an 07 rav 4 with the v6. I purchased it several months back and has ran just fine. I changed the oil several days ago and used mobil1 5w30, upon cranking it up with hood still open and letting it run for a few mins to check for leaks i noticed a noise coming from the timing chain area of the engine. I thought at first it was noticeable because i had the hood up, so closed the hood and even from in the vehicle i can hear it. I have driven the vehicle for a few days since and it's still there. I only hear it when idling, or very low rpm. I would have noticed this before the oil change and i definately never heard it before...It's almost like the oil is too thin and either causing the hyd lifters/tappets or the cam chain tensioner to not exert quite enough force to take out the slack. I guess i can put some 10w30 in it and see if that changes anything. I have heard of some GM trucks not recommending the real thin weight oils because they cause too much slack in lifters and cause some noise...any ideas???