wpalmisano
Cadet
- Joined
- Jul 23, 2009
- Messages
- 22
I am having the usual overheating and rev limiter issues with my 1987 Suzuki DT65. The rev limiter comes on and stays on. The water light on the dash guage lights up. No water from pee hole. The water discharge hole spits water intermittantly, as if the thermostat functions, the water is hot. I would swear it is coming out just like it always did, no less.
I pulled out the thermostat and tested it in a pot of water per the service manual, I removed the flow switch and tested it, then simply disconnected it, rev limiter stays on. I can't see how. Isn't it supposed to go off ?
With the thermostat out, a garden hose fits in the hole. I blasted out the cooling system. I removed the lower intake slots and water blasted out. I ran water through it for some time.
While I was running water through it I noticed it pouring out a hole on the front of the driveshaft housing just above the impeller area on the front side of the motor. I can find no information on that hole. It is about 3/8" and is definately there on purpose. It does not appear in either the service manual or parts manual. You can look inside with a flashlight. If water pours out it must be connected to the cooling water flow, but there is no filter on it.
Since this motor seems to have this issue a lot, several different mechanics have worked on it. It always works for a few hours and starts doing it again. Impeller continously rebuilt, (so they told me). Is this stupid mystery hole supposed to have a plug in it ? Maybe a filter ? I tried holding a finger over it and the pressure increases slightly, but never tried it in the water with the hole plugged. Anybody know what I need to do ?
I pulled out the thermostat and tested it in a pot of water per the service manual, I removed the flow switch and tested it, then simply disconnected it, rev limiter stays on. I can't see how. Isn't it supposed to go off ?
With the thermostat out, a garden hose fits in the hole. I blasted out the cooling system. I removed the lower intake slots and water blasted out. I ran water through it for some time.
While I was running water through it I noticed it pouring out a hole on the front of the driveshaft housing just above the impeller area on the front side of the motor. I can find no information on that hole. It is about 3/8" and is definately there on purpose. It does not appear in either the service manual or parts manual. You can look inside with a flashlight. If water pours out it must be connected to the cooling water flow, but there is no filter on it.
Since this motor seems to have this issue a lot, several different mechanics have worked on it. It always works for a few hours and starts doing it again. Impeller continously rebuilt, (so they told me). Is this stupid mystery hole supposed to have a plug in it ? Maybe a filter ? I tried holding a finger over it and the pressure increases slightly, but never tried it in the water with the hole plugged. Anybody know what I need to do ?
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