Join Date: Oct 2005
Location: Pensacola, Florida
Re: Normal cooling behavior?
Thanks for the info Ironman, I thought something wasn't right. The temperature right now is about 70 (I'm on the Gulf Coast) and I just rode the bike about 15 miles. The temperature gauge came up about 1/8" past the second mark on the guage, and never got any higher. In the morning, when it's been about 60 degrees it doesn't come quite up to the second mark.
I didn't have a service manual until yesterday, and when I read it I noticed that it said to make sure and place the thermostat in with the bleeder hole "up," so I just took the cover off and checked. It was at about 2:00, so I re-oriented it "up." Although I don't see how this is going to help much, if at all. The thermostat was closed, as it should be, and this is a new one. I have been bleeding the thermostat housing, saw that here!
Also, in looking at this problem I came across Gypsi's web site and noticed that she puts a board in front of her radiator to partially cover it when it's cold . . . which made me think that this cold-blooded business was normal! But now with your info I think maybe I still have a problem.
The temperature guage could be bad, but it seems to work exactly right when I just sit and let it idle until the temp comes up. It comes up to just the left edge of the thermometer symbol (the water at the bottom of the symbol, actually) and locks there, just like the thermostat just opened up and it is now up to temperature. The fan comes on too, so it could be that the thermostat has been open for a while and I'm seeing the cooling from the fan. Better check that guage, I think.
I don't see how the water can go through the radiator without going through the thermostat, so you shouldn't need to cover the radiator at all if it's cold. The thermostat should be closed!
Also, I think you're right about the fuel mixture being rich. I did put in new KN filters, and that helped a lot! Now I'm getting 41 mpg, but I think it should be a lot better since that is at mostly 50 mph or so and not hot rodding (much). I've ordered a colortune plug and a vacuum gauge which should show up in a week or so to do a tune up. The temperature thing is what is worrying me though. I'm going to see if I can figure out the thermometer and check it now . . . and also check the sparks on all four leads. (I did put in new plugs.)
Since Gypsi seems to be having a similar problem, how are other bikes doing? Like mine, or like Ironman's?