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  1. R

    Exhaust hose hookup

    I have put some performance exhaust on an old 1992 Yamaha Waverunner. There is a nipple coming off the muffler, and there is a hose that came with it also. Is this muffler supposed to be water cooled or something? I have a nipple on the side of the boat too, so it looks like the same size hose...
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    90 HP EVINRUDE V4 SHUTS OFF

    Hey guys. My dad has a 1991 evinrude 90 hp V4 motor on his boat. Lately, when running it wide open, and only at wide open, the motor will run for about 3 to 5 minutes, then it dies. If running anything else other than wide open, it runs fine with no problems. I checked today and there is good...
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    won't run wide open

    I also have a problem getting my motor to run wide open when under a load. It will start, idle, and run to 3/4 throttle just fine, but when cracked wide open it dies off. Engine does not sound like it is missing, just acts almost exactly like 3/4 throttle is full, and full throttle is past full...
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