Another possibility is that the variocam actuator loses oil pressure over time because of the worn/rigid O-rings inside. It takes quite a few revolutions of the crank to re-pressurize them. Does it rattle every time you turn on he engine or only when you don`t use it for long? I think for a `98 a couple second rattling is not the end of the world after a 2-3 month resting.
As a winter project couple a months ago, I did replace cam- and IMS-to-cam chainramps as well as tensioners, now the start up rattle has disappeared. Well worth the effort.
Another possibility is that the variocam actuator loses oil pressure over time because of the worn/rigid O-rings inside. It takes quite a few revolutions of the crank to re-pressurize them. Does it rattle every time you turn on he engine or only when you don`t use it for long? I think for a `98 a couple second rattling is not the end of the world after a 2-3 month resting.
No, it only rattles at start-up when the car sits for a while. Once the rattle is gone, it's gone for good if I drive it again within 2-3 days.
Boxster
Hybrid Mode
