Re: [diesel_mercedes] Follow Up 300 SD Miss

 

Bill, 
 
    I think that Nate, and probably others, posted responses telling you that the valve adjust is the FIRST task on these engines.  You said "I'll get around to it, after doing other stuff that I consider important." 
 
    Perhaps there are lessons here: 
 
1)    For other newbies to these engines, the valve adjustment is an important, priority task; 
 
2)    For all of us, there are plenty of people here who really KNOW what needs to be done.  Their advice is important and valuable. 
 
    As to the sensitivity of the adjustment nuts - there are specialty tools for this, which are essentially wrenches that have been bent to fit the odd spaces.  Some people here have made their own, out of regular wrenches.  Such wrenches make the job easier, including holding the nuts in place as they are tightened. 
 
Tom 
 
 
In a message dated 6/8/2012 5:12:53 A.M. Pacific Daylight Time, wmcowart@yahoo.com writes:
 

For those that do not remember orgi8nal post. An 83 300SD missing at start, miss until the temperature wen to 80 C then ran normal. It could have been growth in the fuel tan , or valves, different metal expansion rates. I put in some marine bactrial , helped but did not cure the problem.
I finaly got to the valves, 7 of them so tight , Actualy metal to metal between the cam shaft and the push rod. Adjusted and no more miss on start up. The adjustment nuts on this engine are beyond senstive, when you lock them together. Makes it tought to get them right on the money.
I was impressed with the general appearance of the top of the head, valve cover and cam lobs. Actual it was spotless clean. Most vechiles this age, that have not been overhauld, would be full of crude. Regular oil and filter changes does make a difference. Bill C


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