port side rpm's dragging

[jrblough@mtu.edu]

I had a similar issue on a 89' 3300 open that I had with the Crusader 454's in it. The tachometer would just stop moving just below 3000 rpm or would bounce around. Was a dirty contact on the tach gauge itself....I could hear that the engine was running fine and continued increasing in rpm when I pushed the throttles forward... the tach just didn't work.