Broken Wire, Worn Parts Etc - PeachParts Mercedes-Benz Forum

rmmagow · #1 07-07-2007, 01:59 AM

Car is an 83 300D being re-born for about the 5th time. I just adjusted the valves on the car. According to the "easy" chain stretch measurment method the chain is still really fine after 230K miles. Valves weren't bad. I can see two valve chain guides, neither of them wiggle at all and they look OK. Is there anything else related to chain control that I should check?
I broke the wire from the water temp sensor, the one near the vacuum lines leading to the EGR valve on the left side of the engine (facing engine). It is a black plastic push on round connector. Does the connector come apart somehow so the wire can be resoldered or do I just make my own new connector?
Second item. The black box on top of the valve cover. Can the guts be replaced? What is the part called? I know it has a lot to do with shifting and mine looks a little beat.
Third, the EGR valve, is it supposed to have a gasket? mine didn't and the hex screws holding it on weren't very tight. Will a form-a-gasket product work? If so, which type, color? I generally use Permatex for that type of work.
4th, the turbo. holding the shaft I can move it a very tiny bit up and down but it does not have any play back and forth. Is that OK? No excessive smoke or oil burning at any rate.
Part of my concern about the EGR and black box is my tranny is flaring and I want to see what I can improve before ripping everything out. The car is going back into daily service, 100 miles a day and I want it to run a little better. Thanks All.