I have a 98 3 cylinder 40 merc that i just bought a few months ago for my boat i am restoring. I just installed it and ran it sunday. The engine ran great for the first hour or so then all the sudden it starts to miss a bit at WOT and then loses 1000 rpms and will not recover. After that it...
i just had both these engines rebuilt 200 hours ago and had new carbs installed 25 hours ago. 10 hours ago the #4 cyclinder burnt a valve after it blew a head gasket. So we fixed the head and installed a new gasket. Now 10 hours later it has burnt a piston on the same cyclinder on the same...
