Originally Posted by e30_slideways
M42 engines are known for the "sewing machine" sound after 150K. I suggest taking the valve cover off and doing a valve adjustment.
its not that hard, just need a feeler gauge, socket wrench and an open box wrench.
I had a really bad ticking problem with my M20, the valve adjustment made it near silent.
BTW, if your problem gets worse, chuck the motor and get an M20 or M50. cheap motors and easy to swap.
yea maybe ill adjust them. Havent done that yet. so i might take it to a friends shop, he knows what hes doing.
and i have to look into getting a new oilpan gasket and checking if any screws fell out(read a article about screws falling out of the chain assembly and ending up in the oil pan..?) into my pan, causing less oil to get circulated.
btw E30slideways, nice site. I like the articles.