"I have a 97 Regal Commodore 2
"I have a 97 Regal Commodore 242 with the Mercruser 5.7 LX engine... The engine has 230 hours on it the previous owner reall didnt use the boat and it sat for 2 yrs. It started running rough so I changed the plugs, cap, and rotor... When I rev it up the timing...