hello all.<br /><br />well ot begin with. I have a 65 hp mercury, 650 model. year is from then till now? 4 cyl.<br />and my problems are.<br /><br />rough idle and slow speed but will plane after a couple of minutes. backfire's or coughs when starting. rebuild carbs, wires are good. ok today i was going at top speed or as top as i think it is all of a sudden it power'd down to idle and backfired and ran really rough shaking and all kinds of things. i let it sit for a minute and it started and ran as it usually does (from the top of my post). so any how any thing i should look at and test. have'nt taken out spark plugs yet, what should i look for on those. oh and the plug wire's are numberd 1-4 should they go in order from top to bottom or diffrent. right now their from top to bottom. i dont have a tach so dont know the rpm's. but do know its really bad or low.<br />well anyway thanks to anyone who posts to this topic. oh and what looks like steam or white smoke comes out of the exhaust. also new water impeller. any thing else i missed tell me. 
<br /><br />and is there a chat on here?
<br /><br />and is there a chat on here?