i got a seadoo gtx 97 787 engine. exhaust manifold gasket bettwen maifold and exhaust pipe broke and water getting. a soon i get the ski out of the water i start the ski but won't stay in idle. the bolts of the exhaust pipe broke inside the manifold. i put wd-40 during one week for save the engine have only 10 hours of use. anyway i removed carbs for replaced the exhaust maifold. install back again with new gasket of carb,manifold and exhasut mufler pipe. jetski now just crank but won't start, i remove the spark plugs for clean the clinders by crancking the engine. i just see now a little be of mix of the gas. put new spark plugs and try to start the engine but when i press the strat button cranck the engine for couple seconds stop and when i try again sound like when a starter is bad. if i wait like 1min and try again engine turn when i cranck but won't start. batt is charge at full capacity. please help