Piston slap or timing belt tensioner?
Posted 30 July 2017 - 01:07 PM
Posted 02 August 2017 - 02:55 PM
If the sound doesn't go away when the engine is warm, it's not piston slap, but it could be rod knock. And yes, you're correct, a failing timing belt tensioner can cause a similar noise. I've had it happen on one of my cars.
Do you know the history of the timing belt replacement on this car? If it's never been done, you're WAY past due in the first place. To check the tensioner you're gonna have to remove the timing covers and see if it's loose. It's not a big deal, remove the belts for the alternator/power steering and AC. Remove the crank pulley (22mm socket), and pull all the timing cover bolts out (10mm socket).
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