PeachParts Mercedes-Benz Forum - View Single Post

pawoSD · #4 02-17-2005, 01:33 AM

Essentially, on mine anyways, it is a bolt located on the back of the injection pump (facing the firewall/oil filter housing), towards the bottom of it. It protrudes and you can see if you look closely a locknut, and the bolt itself, loosen the locknut first, then you will be able to adjust the rack damper freely(outer bolt) make adjustments in either direction while its running, you should be able to feel and see the engine shake more when its out too far. You want to rotate it to the perfect spot right between shaking and no shaking, it took me a few tries to get it perfect. Once this is done, retighten the locknut while making sure you're not rotating the rack damper pin along with it. This solved my cold start/idling problems. I am not sure if it would be the same on the 616 injection pump, but I'd think it'd have a rack damper just like the 617....since they would both be performing the same function (controlling idle/engine shake) and such.