I am getting a clicking sound when I do a cold start in the mornings and the temp is less than 60 degrees F. I opened the hood and it is the tensioner pulley making the noise. It seems to be catching and then snapping back to make the noise. The noise stops in about a minute and all is smooth. I am going to replace the idler and tensioner pullies unless someone has seen this before.

I have been searching the forum but could not find the torque spec. for the pulley bolts. Anyone?

Thank you for the help.

 

I know torque spec for the belt tensioner assembly bolt is 40Nm (29.5 ft lbs) - I believe the torque for the pulley bolts is 15Nm (don't quote me on this one though...) Look up specs in JTIS..

 

abonano,

Thanks for the help.

Hunter

 

Your quite welcome Hunter

 

I realize thjis is an older thread but can anyone tell me if the bolt to this tensioner pulley is a reverse thread and where might I find a source for a new one. The bolt on my 2001 XJ8 tensioner pulley is rounded and makes it extremely difficult to remove and replace the belt. I just replaced the thermostat housing, water outlet pipe and the water pump all for about $130 (and some skinned knuckles) thanks to all of the great information on this forum.

 

The bolt holding the tensioner to the block is not; the bolt releasing spring tension is a reverse thread. Most good hardware or auto parts store should be able to replace the one to the block. The one for releasing tension comes with a new bolt with a new tensioner (I broke my tensioner bolt).

How sure are you that the noise is from the tensioner and not the port side VVT? Or a loose secondary timing chain?