Join Date: May 2019
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Can't fit feeler gauge between valve screw and valve stem
So last night I was attempting a valve adjustment on a 2003 VL800. I (finally) got all the covers off, spark plugs out, inspection caps, etc. etc. Time to spin the engine and feel the valves. Well, not so fast. I spin it until the R | T mark is perfectly lined up, rockers are both up, but I can't get the feeler gauge between the adjustment screw and the valve stem. Not even the smallest 0.038mm one I have. This is of course partly a product of having the rockers recessed like they are instead of accessible from the side (I am not sure but I believe the industry term for this is "******* design"). I am just about ready to use the Jpaige method of just counting turns. But I have two concerns:
a. How do I know with 100% certainty that I found TDC on the compression stroke? Is the R | T mark going to come around for compression and exhaust stroke or just the compression stroke?
b. Is this just a product of how difficult it is to access this space or are my valves really operating with 0.00mm lash?
Bonus question: I see a lot of black crud on top of the pistons through the spark plug hole. Is this normal? Should I do anything about it?