[AT] Bad valve on an M

[Wayne Snelling]

Dick: Probably is valve. However, I had an experience similar, it was 
popping and it turned out to be cam lobe. Maybe best thing to do is 
remove the valve cover and start the engine-don't worry oil want go 
everywhere, just a little loss. See if all valves are making the full 
travel and none are too tight. If too tight and not proper valve lash 
then it would pop also. Head job would not be too much ? $100 depend on 
if new valves are needed. One thing to remember is that after doing a 
head repair job you are going to use more oil because of the increased 
compression.
Now the best thing would be to let me come take it off your hands and 
you need worry no more!

Wayne