My engine seems to run great (37 knots at 4000rpm) but it stalls at idle when warm (dangerous when docking). My marina says the compression check shows a weak cylinder and they want to tear it apart, but it seems fine with no loss of power. If a cylinder's bad, would I notice a loss of power or rough running? Any other possible reasons for the stall? It's been doing this for years and I've always thought it was an idle issue.
