hi all, my regal rush which is powered by a 90 hrs mercury sportjet, with red stator, just replaced, boat is running good, but it makes a pop about every 7 seconds and a plume of exhaust escapes from under the flywheel thing with the stator inside of it... i took the top cover off and observed it is def coming from under there my question is is there some type of gasket or something that needs to be replaced the boat shop charges so much to work on this engine, and if its some i can do id like to know... please any help would be greatly appreciated, thank you