I think I'm wrong here. Looking at the 617 engine, I think the timing marks are on the balance plate (not the vibration damper) which is hard mounted and pinned to the crank. Sorry for the red herring.
-----Original Message----- From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Scott Ritchey Sent: Saturday, July 27, 2013 5:31 PM To: 'Mercedes Discussion List' Subject: Re: [MBZ] Black smoke and loping at idle. One other thought, is it possible for vibration damper (the thing with the TDC and crank angle indications on the front of the crank shaft) to fail and slip such that it indicates the wrong angle? I had this happen on a 86 ford transverse V6 (the rubber bond between the hub and outer rung failed) but I don't know if it's possible or likely on Mike's engine? Scott -----Original Message----- From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Peter Frederick Sent: Saturday, July 27, 2013 10:11 AM To: Mercedes Discussion List Subject: Re: [MBZ] Black smoke and loping at idle. You need to find or make a drip tube and use it correctly, it's not all that hard. You and cheat with some clear plastic tubing if you cannot find a drip tube. Remove the #1 injector line, remove the pressure valve holder and pressure valve. Replace the pressure valve holder. This is to allow you to see when the plunger covers the feed port in the sleeve inside the pump. Attach the drip tube or clear plastic line to the injector line fitting. Aim the drip tube off the side of the pump and be prepared for the fuel that will run out. wire the throttle linkage wide open and operate the manual lift pump to pressurize the feed chamber in the IP while rotating the engine by hand. Fuel should flow freely from the drip tube until you reach 26 degress on the compression stroke, at which point it should abruply cease or greatly diminish. This is the point at which the feed orifice in the sleeve is covered by the plunger and fuel pressure in the IP set should start rising toward injection pressure. This is the best method to determine if you have pump timing correct. Rotate the pump slightly get obtain the flow reduction at 26 degrees before top dead center on the compression stroke of #1. Once you get the injection timing correct, you will know if you have a pump problem or not. It doesn't take more than a tooth off on the sleeve that connects the IP to the timing device to result in a poorly running engine. good luck! Peter _______________________________________ http://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 _______________________________________ http://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 _______________________________________ http://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
