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Old 03-19-2013, 12:08 PM   #16
AustinJake
TE450-KLE-FXDWG
 
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Joined: Aug 2010
Location: Austin, TX
Oddometer: 3,623
I've had the water temp sensor fail a couple of times, Husky TE450, and I had a slight leak on the head gasket, bike ran fine, there was no white smoke, I tested for exhaust gas in the rad, there was none, but whenever I shut the bike off hot, and then 20 minutes later, try to start it up, there'd be water on the spark plug. I'd wash the plug off with alcohol, stick it back in, and she'd start right up. Finally pulled the HG and found the breech in between the plies. The pressure of the coolant system would force coolant into the combustion chamber and waterlog the plug.



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Old 03-20-2013, 05:49 AM   #17
anotherguy
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Joined: Jun 2009
Location: the hills
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Quote:
Originally Posted by AustinJake View Post
I've had the water temp sensor fail a couple of times, Husky TE450, and I had a slight leak on the head gasket, bike ran fine, there was no white smoke, I tested for exhaust gas in the rad, there was none, but whenever I shut the bike off hot, and then 20 minutes later, try to start it up, there'd be water on the spark plug. I'd wash the plug off with alcohol, stick it back in, and she'd start right up. Finally pulled the HG and found the breech in between the plies. The pressure of the coolant system would force coolant into the combustion chamber and waterlog the plug.



In case ya didn't know a leak down would have found that for ya.
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Old 03-20-2013, 07:30 AM   #18
H96669
A proud pragmatist.
 
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Joined: Nov 2009
Location: Hiding off Hwy 6, B.C.
Oddometer: 4,298
Early 80's and the coolant pipe came off on my first year Honda Sabre and my leg got kind of warmish. Jeans were sticky all day.....Fixed quickly with a hose clamp and some water. Apparently they all did that and Honda improved the design the next year.

Late 80's and the "they all do that" BMW water/oil pump seal on the 85 K100RS. Early enough that they hadn't updated yet.

K1200RS was running a little hot, no wonder considering all the dirt,bug crap and road tar I picked out of them radiators with needles and homemade tools a few years back. Better now that I screened them all but still spent a few hours recently picking little specks of gravel out of them.
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Old 03-20-2013, 08:01 AM   #19
Maggot12
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Joined: Feb 2010
Location: Barrie Ont
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Quote:
Originally Posted by Boon Booni View Post
Have lots of miles on various water cooled bikes, never had a cooling system problem.
This... All Jap bikes from 1994 and newer.
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Old 03-22-2013, 06:01 AM   #20
S/W OP
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Location: Massachusetts
Oddometer: 374
How old are your hoses? Have you replaced them?

When I started as an auto mechanic back in the sixties, if your car was three years old, you had probably better replace all your hoses.It was very common to see a car on the side of the road with steam coming out from under the hood. I think there were more on road breakdowns back then, impressive considering how many more cars there are now. It was also common for customers to replace all their hoses before a long trip.
My Silverwing is elevin years old now, and I had to tighten all the hose clamps over the past couple of years as a lot of the connections started leaking. A sure sign of deterioration. I replaced all the hoses which all showed their age, although barely, as I hate beaking down on the road.
I also replaced the thermostat and waterpump. I didn't test the thermostat,I put a new one in any way, and the waterpump showed no weeping at all from the drain hole with no roughness in the bearings, probably could have lasted another few years. Let's call these "time changes".
Anyway, I am impressed with the reliability of these motorcycle cooling systems.
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