Ive read lots of comments regarding how rattly the Alfa diesels seem to be in comparison to other manufacturers so when i got my 159 i just accepted the noise and got on with it until.....
I was wiping down the metal work in engine bay and put my hand on engine cover, instant change in noise and volume. The cover is knocking on top of the area around the oil filler, the cover itself is secured by 4 rubber bungs with thro holes which locate on four screw in ball ended bolts, there is no adjustment on these and when mentioned to dealer they just greased them!
I have since put some spacer spring washers under two of bolts and now have a much more refined, smoother and quiter sounding engine, ok its still sounds like a diesel especially when cold but inside the cabin its a vast improvement.....
This may not be the reason for most of the complaints but its worth a look because i just took it for granted until i came across it by accident....
I was wiping down the metal work in engine bay and put my hand on engine cover, instant change in noise and volume. The cover is knocking on top of the area around the oil filler, the cover itself is secured by 4 rubber bungs with thro holes which locate on four screw in ball ended bolts, there is no adjustment on these and when mentioned to dealer they just greased them!
I have since put some spacer spring washers under two of bolts and now have a much more refined, smoother and quiter sounding engine, ok its still sounds like a diesel especially when cold but inside the cabin its a vast improvement.....
This may not be the reason for most of the complaints but its worth a look because i just took it for granted until i came across it by accident....