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  1. R

    Fogging thru carburetor

    I warmed up the engines so thermostats would open. Next I pumped 10 gallons of AF per engine thru the muffs. I did not drain the engine through the block and plugs beforehand though. I pulled an exhaust manifold hose afterward and the scalding water was pink. Do I need to go back, open the block...
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    Fogging thru carburetor

    I just finished winterizing two merc 4.3 I/Os by pumping antifreeze through earmuffs. Next, I was fogging through the carburetors for 45 seconds before I ran out of antifreeze and had to shut them off. Now I’m wondering if I got enough of the fogging oil into the cylinders because I’ve read that...
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    Used Waverunner reputations ?

    We are going to purchase a used waverunner.<br /> <br />I am a powerboat owner and know nothing about them.<br /><br /><br />Are a Seadoo and Yamaha the same in terms of quality ? Do they hold up well - one listed is 5 yrs old and the other is 8 yrs old.<br /><br />Would there be anything I...
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    Removing The Lower Unit Johnson 200HP

    I have a 1991 Johnson 200hp. I have to remove the lower unit to change the water pump. The problem is that when all the bolts are removed, the unit will not drop down. We put some pressure on it and it did drop down about a 1/4 inch. <br /><br />Any suggestions on how to get this off. I'm trying...
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    lower unit bolts cross threaded-Johnson 200 '91

    We were trying to drop the lower unit to replace the water pump but gave up because it would not budge.<br /><br />When torquing the bolts, the two on the left side in front wouldnt tighten and cross threaded.<br /><br />Can larger bolts be tapped into the stripped threads without needing to...
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    john. '91 200 v6 water pump or thermostats ?

    We have twin johnson 91s v6 200s. <br /><br />Getting ready, both engines ran hot on land. We replaced thermostats on both and water pump on one because of a stuck lower unit on the other.<br /><br />Tested each w/earmuffs- the engine with new thermostats and water pump was pretty warm and...
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    Twin '91 Johnsons- one engine surges

    When running in the back bay approx. 3500 rpm, -twin 91' Johnson Seahorses 200s, the starboard engine would often surge up to 4500 to 5000 rpm and would need to push the throttle levers out of sync to keep both engines same speed.<br /><br />Could that be something with the throttle linkage or...
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    removing a stubborn lower unit

    does anyone have a suggestion short of using a sawz-all to try to free a stuck driveshaft from powerhead to drop lower unit to replace an impeller ?<br /><br />we have a pair of '91 Johnson 200 seahorses that have been used in the Ocean.<br /><br />one powerhead was replaced 2 seasons ago and...
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    Outboard engine training

    we are in the southern New Jersey shore area and wanted to know if there are any courses about outboard engine mechanics and being able to fix them, besides trial error and money.<br /> we have always had an inboard v8 chrysler and know those engines mostly from doing the work but we got a...
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    Powerhead fused to driveshaft

    I have been trying to take the powerhead off of our 1991 Johnson 200 v6 engine to see if we can replace a seized piston. Ten years of running in the ocean has rusted the driveshaft to the crankshaft and no amount of prying is taking it off. We are trying to avoid cutting it off with a sawzall to...
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    need advice: Johnson 200 frozen

    our port 1991 Johnson 200 engine froze due to a seized piston. Our mechanic told us it needs a new powerhead, haul out, and replace. The question we have: if we put out the money to fix this ($7500) how do you know where to look to make sure it doesnt happen again with the new powerhead. Also is...
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