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1998 4.3l mercruiser thunderbolt engine. Took off old exhaust manifold elbows how do you get the new ones back in?. This engine does not have risers. The new elbows are thick firm rubber in the space to get them in is very small suggestions please
I have a 1998 4.3 L Mercruiser Thunderbolt on the port side to the left of the Lower Blue drain hole is a round circle that's brown with a bolt in the middle can someone please tell me what that round brown circle is.
