flushing engine

[tboss]

should I be able to flush my cooling sys ( raw water) with out the engine running by attaching the muffs and water hose to the lower unit. I tried today and I cant get a flow of water to go thru the system . I realize the water will flow thru if the engine is running . tks terry

 

[sundowner205]

Re: flushing engine

You can make an adapter from an old garden hose.

Remove the raw water hose coming from the transom/oil/power steering cooler that feeds the thermostat housing at the thermostat housing. Cut the garden hose to the length desired, however, be sure that you cut the appropriate end to mate with your flushing hose. Attach the cut end of the garden hose to the inlet of the thermostat housing, and tighten with the same clamp for the raw water hose.

Then just turn your hose on and let it flush for 5-10 minutes; drive lowered.

Be sure not to run the engine, however. The lack of water around your raw water impeller will fry it.

Hopefully whatever is blocking your system will find its way out. It could be an impeller vane. It could also be stuck in or around the thermostat itself. You may want to check that, especially if you aren't getting water through the system with the muffs...

 

[tboss]

Re: flushing engine

thnks sundowner that sounds simple enough.Im thinking abt making an adaptor to attach to the hose you are talking abt and install it permitly with a water hose attachment to it kind of like the system you flush your radiator with. as a mater of fact I might can use the radiator flush system to do it with I will just need to over come the difference in the hoses. Wht doyou think abt that brain storm. Should be simple enough to do. thanks agn Terry

 

[sundowner205]

Re: flushing engine

You're welcome. I know the kits you are referring to - the Prestone flush kits...Not a bad idea;it could work. I'm not sure if the plastic/nylon material they are manufactured from would withstand the high temps in the engine compartment, however.

I'm by no means an expert; perhaps one of the more experienced guys will chime in here and offer some additional insight. Either way will accomplish what you want, though.

Best of luck, and keep us updated on the flush adapter.

-Mark