Idle Rattle Plus Major Overhaul

[BYprodriver]

Originally Posted by san rensho

I seem to remember reading that If you switch to the new style tensioners, that you need to replace all of them. I can see where you should replace the IMS and bank 1-3 since they both are on the same side of the IMS. But since the 4-6 tensioner is completely on the other side of the IMS, I can't see how not replacing that tensioner could have any effect.

The only big change to the chain tensioners is the external spring to help maintain tension on the chain, otherwise there is no need to change them if working properly. I recommend the OP change the easy 2 based on his mileage & budget. The 4-6 cyl tensioner has been "updated" to a lower profile design & I assume this is for increased airflow between it & A/C compressor.