PeachParts Mercedes-Benz Forum - View Single Post - fixed delivery valve now I have a click in my 603

Marcb · #6 08-13-2006, 03:07 AM

Funny enough, I did the same exact repair on all 6 delivery valves exactly 1 year ago. My car still has a "nailing" sound that wasn't there prior to starting the job. I had a pretty bad fuel leak and I even had MBI in Portland, OR recheck everything. The leak is gone but I still have a "clack, clack, clack" sound at idle and it "pings" between 1000-1500 rpm.. just before the turbo picks up. I've tried Diesel Purge, newly rebuild injectors, etc and nothing seems to help. I am really beginning to wonder if I simply need a new IP. Please keep me posted on what you find as I'm very, very curious and would love mine to run and "sound" the way it did prior to Delivery Valve repairs...BTW, mine does idle very nicely and there is little to no smoke or shaking... just a clack, clack sound.