Was this a new 46FX?I guess my question is how much time was on the engine before
putting on the diesel head? You need a nice wear in burnish thing between the piston
and liner The OS46FX I think may use nickel in the liner plating which will break in
rather quickly,Irvine is a hard chrome plate takes a little longer,But they still must
be broken in on glow the fact that your are running the compression screw that far
down makes me think of the run in. You have compensated by "increasing the compression" not really your are bringing it up the the point it will run. When it is
well lapped in, You may find that you well could be a turn out for normal running
Also make sure there is only one head gasket in there, the OS46FX diesel conversion
is one of the best, I had a similar problem with my irvine 53 I benched it for a few
more tanks of glow-- bingo--Backed off the compression screw now have a big spread
but not needed,Yes when they first start knocks bangs which goes away when warmed
up. Years ago I had a mercedes 220 diesel you could hear this thing banging and knocking a block a way in the winter when first started. Little diesels or big ones
sound like this cold