How do you Inspect chain rails

[Homeoboxter]

Originally Posted by flmont

Iam a 5 chain..but before I pull cover,..Iam going to change the tensioners and go with a little heavier oil,..if that noise goes away I ll feel good,..if not...then off comes the covers..Or I will pull the engine and rework some stuff...I would love to rebuild a 3.2 and throw it in there ! but not sure I want to spend that much yet ! Thanks Frank

Oh, sorry, I didn`t look at the the year of your car. If it`s a 5-chain, then probably the two small chain pads on the variocam unit are shot. In mine they were totally worn off, one came off from the variocam and the pieces were floating around in the engine. The car was at 100k and jumped timing. If those pads are worn, I don`t think replacing the tensioners will make a difference because those are supporting the long side rails. If you remove the plug over the intake camshaft on the scavanging pump side, you can see the pad (one of the two) and the variocam with a borescope. There`s very little clearance there but it`s visible with a small camera.

[flmont]

Hmm do you mean the green cam cover plug or a different type of plug.Thanks !!

[flmont]

well I am sure its not the cam cover plug, But Iam not very Familiar with these engines ,.But I will look it up Thanks

[Homeoboxter]

Yes, it is the green plug, on the pump side, now it`s unplugged:



You can`t see both, but you can see the upper one that usually breaks, as Newart says. It`s the orange plastic thing deep inside on the right. If it`s in a really bad shape, it`s enough to tell by taking a peek through the hole. With a borescope you can see more.

[flmont]

Ahh.Great thank you very much that really helps out,..! I now have a clu..lol. Frank