Overheating with muffs

[Marlon Galviz]

Hello... Is it possible for a '93 90hp to overheat when on muffs, and not overheat while in the lake? If so, is it common? Thanks in advance.

 

[johnnygjr]

Yes its possible,might not be enough pressure and volume of water,bad seal on lower unit

 

[joereeves]

Hello... Is it possible for a '93 90hp to overheat when on muffs, and not overheat while in the lake? If so, is it common? Thanks in advance.

Yes... When running a high hp engine on a flushette, the water pressure must be turned on full otherwise the engine will surely overheat.

 

[Boobie]

The true test is running the motor in the lake. They were made to run in lakes, not on flushers.

 

[kimcrwbr1]

The best way to flush is in a barrel of water, for the larger gearbox you can get creative cutting down a large drum and adding a drain plug. You want the water level 5 inches above the water pump impeller before starting.

 

[papyson]

I hate muffs..i use a stock water tank that farmers use and run a hose in it to keep it topped off..you can run all day if you wish at under 2k rpms..cust about 100 bucks on amazon or farmers supply..they have a removable drain..a 3/8 socket wrench fits mine...