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Author Topic:   1995 Rage Overheating
CAB posted 05-26-2002 05:57 PM ET (US)   Profile for CAB   Send Email to CAB  
I have a 1995 BW Rage w/115hp TurboJet. The last time I had it out on the lake, the temp alarm sounded. I do not have a manual for this boat and was hoping someone would be able help me in trouble shooting the source of the problem. The water intake at the bottom of the boat is clear. Is there a method of flushing out the cooling system with a garden hose? I have noticed a cap with Prestone inscribed on it attached to what appears to be a cooling line. Any help would be appreciated!
B Bear posted 05-26-2002 07:34 PM ET (US)     Profile for B Bear  Send Email to B Bear     
Yes there is a way to flush the engine.
I had a Four Winns Fling once that had the OMC 115 turbo jet. You will need to buy a flush adaptor that connects down near the jet drive and will allow a water hose to be connevted to it. You can order it at nay part department that services OMC engines, just describe what you want to do and they will get the adaptor for you.
B Bear posted 05-26-2002 07:42 PM ET (US)     Profile for B Bear  Send Email to B Bear     
If it helps this adaptor will go in to the cooling line between the jet housing and mating plate on the transom. You would unlatach the housing and flapper cable then pull the housing back off the impeller,when this is done the cooling port will be exposed and this is where the adaptor would be inserted. When plaving the housing back on rotate the impeller so that the housing will slide on easy, it should never be forced or pounded on.
tuna1 posted 05-26-2002 09:44 PM ET (US)     Profile for tuna1  Send Email to tuna1     
The cap that has Prestone on it(is a tee fitting that was put in the cooling line to the engine),is what the previous owner has added to flush the motor out. The adapter that fits it is less than 3" long and is made up of two female hose ends with a one way rubber valve in between and limits the volume and preasure to the cooling system, that fits the end of a garden hose.Goto a auto parts or discount store and ask/look for the Prestone flush adapter kit.It should be less than $6.00 and will have the hose end flushing adapter,a couple of diferent size tee fitting and hose clamps in it it all blister pack on a card.If you can't find one,remove the Prestone cap/Tee and insert a female hose end into the water line going to the motor. Don't turn the waterhose on full or too much water will enter the system and may back up in the exhaust system and hydrolock a cylinder(water back up in the system and enter a cylinder and when you go to start it you can bend a connecting rod)so be careful.You don't need to run the engine to flush out the system,but it may help to heat the engine up and being careful feel the cylinder heads to see if one run hotter than the other side to side or top to bottom on one side.Post back if you need more help. Good luck.
tuna1 posted 05-26-2002 10:06 PM ET (US)     Profile for tuna1  Send Email to tuna1     
Email me directly for more info/my thoughts on overheating problems of OMC Jet unit powerhead.
B Bear posted 05-26-2002 11:15 PM ET (US)     Profile for B Bear  Send Email to B Bear     
That Prestone flush kit add on is interesting. With the adapter you would run the engine like you would with earmuffs on an outboard.
tuna1 posted 05-27-2002 08:44 AM ET (US)     Profile for tuna1  Send Email to tuna1     
Yes,exactly like earmuffs,ect..But so as to waste less water pinch off the line towards the jet pump,no need of sending water to the jet pump bowl,it does no function out of the water and is not needed.

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