Merc 228 exhaust flappers gone?

[ottawamerc]

Hi guys I've been having a continual problem with my merc, early 80's chev 305. It will not go over 3000 rpm with out miss firing. I have broken two of the rubber boots on the exhaust after the elbows, both on the right side (looking at the front of the engine). I was on the water all this week and I stopped at the local marina and he thought both were typical of a blocked exhaust. Sounds reasonable, I pulled the elbows off and trimed the outdrive up and with a small mirror and flashlight I could see that there appears to be none of these flappers in there?
Any ideas on the cause of these problems would be greatly appreciated.

Thanks
Ottawa

 

[searay3]

Re: Merc 228 exhaust flappers gone?

Have to pull the drive. You will see them in the exhaust port. You'll need a new gasket seal kit to put the drive back on. Good time to check the bellows, u-joints, gimble etc etc...