Are you a gambler? Put Mobil 1 in it and drive it... My '85 190D was leaking at the IP once, my Indy worked on it for about a week with about a million starts and stops, when I drove it home it was ticking in a frightening way. Being pig headed and hoping for the best I just drove it, after about 20 minutes of driving the ticking (really more like a gentle tapping) just quit and never happened again. I attributed it to a lifter not pumping up, maybe held with a bit of carbon. I drove the car another 50,000 miles or so so it couldn't have been anything too bad.
-Curt Date: Tue, 18 Sep 2012 22:01:44 -0400 From: "Max Dillon" <meadedil...@bellsouth.net> To: "'Mercedes Discussion List'" <mercedes@okiebenz.com> Subject: Re: [MBZ] OM603 Bent Valve? No!! Message-ID: <001e01cd960a$b84d1070$28e73150$@net> Content-Type: text/plain; charset="us-ascii" Valve was not sticking. By finger I could easily move it up to the seat, and even rotate it a little against the seat, and the valve rotating in the seat felt smooth. I held it closed and filled intake with a little WD-40, and it would not leak out. Just for satisfaction, I sharpened a toothpick into a wedge, and forced open the top of the valve stem seal a little, and dribble some WD-40 down to lube the valve guide. Made a slight difference for the better. So, I put it all back together, and same result: #2 intake valve won't fully close, vents the compression charge air out the intake. What gives? Might the valve spring be bad? Next I'm going to try a different spring, can't think of what else the problem might be. I let it idle for about 10 minutes until the water temperature was normal, but the valve behavior didn't change. Oil pressure was good. I was able to observe and compare all the intake valves, and it looks as if #6 doesn't open as much as the rest. I suspect that lifter is not fully pressurized with oil. Maybe I'll swap that out as well if I pull the cam off again. -Max _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
