Noisy valves

BrianLockett
Fri, 04 Mar 2011 16:50:20 +0000
Maintenance/Repairs

Our 1997 850GL wagon with 160k miles has persisently noisy valves. At considerable cost, we replaced the hydraulic valve lifters with new ones from Volvo. Noise persists. Increased oil viscosity, now at a ridiculous 15W40. Also using an oil additive to further increase viscosity. Little if any noise when engine is cold but once warm, much valve clicking. We change oil religiously and keep oil topped up. This is driving us nuts. Ideas?

8 posts - 6 participants