1984 500 SEL - Timing chain questions - HELP
Hello Mercedes frinds,
As I mentioned in my earlier postings my car have developed a tapping noise lately. It´s not really bad but more like excessive valve clearance on one valve. Fellow listers suggested that I do the "Fuchs finger test" which I did today. Almost no play at all on the hydraulic compensators.
Now to my problem. I also opted for checking the timing chain stretch based. I aligned the timing marks on the cam/ tower and took a reading on the crank - IT WAS 28 DEGREES !!!
I´m wondering if I did something wrong when doing this check? I just took the right (passenger side) rocker cover off. The spark plugs are still in. I rotated the engine clockwise (standing in front of the car/ facing the engine). I also noticed that the chain tensioner is moving quite a bit when rotating the engine.
The car has been running fairly fine since I bought it some months ago except for a slightly stumble at idle. From what I have read on this list the reading should be no more that 4 degrees.
Am I just lucky that the engine is still alive??
Please give me input on what to do. I´m quite nervous now.
1984 500 SEL