"I ain't gonna change a thing"
Ha, gotta love it !
I am certainly no expert, but will say that it is amazing what small changes will
make in engine performance.
When I read about exhaust fluff and carbon knock I have to think their must be
more to the story.
My Metro only has a couple of hundred hours on it and I have had no problems. These
hours were spent running with a pretty heavy load, in the 3 to 4 k area, and have found
a few degrees of timing will make a world of difference in performance. Yes, I said 4k load.
At that load she is pulling hard and starting to put out black smoke. Never ran for long at that
load but think the engine would be fine for extended runs with no problem. I watch temp and
fuel consumption while running.
With that said, I will add that after a hundred or so of "play time" I got serious about timing
and discovered.that 2 or 3 degrees of timing change will make a noticeable difference in
performance.
Carbon knock, black puffy exhaust.....knowing what I now know, after checking fuel delivery
my next move would be a serious look at timing. I never trust factory marks and will make my
own using a dial indicator to determine true TDC.
I'm just say'n. ......
Gary