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FJR Motorcycle Forums
Technical & Mechanical Problems
Coolant leak at the thermostat housing
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<blockquote data-quote="SkooterG" data-source="post: 235873" data-attributes="member: 118"><p>Thanks for all the info everybody. Keep it coming.</p><p></p><p>Question: When one does a valve adjustment, does all this stuff come off? The reason I ask is the one thing I always have the dealer do is the valve check/adjustment and one was completed only 3,000 miles before the crash and the start of the smell of the coolant. Perhaps it took that long for the trace amounts of leaked coolant to reach the header and show the symptoms I encountered?</p><p></p><p>Last night I cleaned up all the dried coolant trails. And after reading the above replies I spent more time investigating. I really don't think the leak is coming from where either half of the T-stat housing is connected to a hose or the inlet pipe. Though I don't know for sure, I still am reasonably certain the leak is at the housing itself where the two halves join.</p><p></p><p>This morning, I fired her up again and let her idle for approximately 30 minutes. The cooling system went through several 4 bars/fan activated/down to 3 bars cycles. I even revved it for a little while. The result? No leaks or moisture whatsoever as far as I could see, and I looked hard. So now I am buttoning it back up. I will order the several seals and such and after doing some riding, check everything again. In the mean time I will work up the courage to disassemble it all. I like the foot powder idea, but the areas I need to check won't be accessible with the powder prior to disassembly.</p><p></p><p>Fuke. I hate shit like this and I have a LOT of riding planned for this bike this summer. Oh well, I hope to have it roadworthy tonight or early tomorrow to go out and road test all the other repairs.</p></blockquote><p></p>
[QUOTE="SkooterG, post: 235873, member: 118"] Thanks for all the info everybody. Keep it coming. Question: When one does a valve adjustment, does all this stuff come off? The reason I ask is the one thing I always have the dealer do is the valve check/adjustment and one was completed only 3,000 miles before the crash and the start of the smell of the coolant. Perhaps it took that long for the trace amounts of leaked coolant to reach the header and show the symptoms I encountered? Last night I cleaned up all the dried coolant trails. And after reading the above replies I spent more time investigating. I really don't think the leak is coming from where either half of the T-stat housing is connected to a hose or the inlet pipe. Though I don't know for sure, I still am reasonably certain the leak is at the housing itself where the two halves join. This morning, I fired her up again and let her idle for approximately 30 minutes. The cooling system went through several 4 bars/fan activated/down to 3 bars cycles. I even revved it for a little while. The result? No leaks or moisture whatsoever as far as I could see, and I looked hard. So now I am buttoning it back up. I will order the several seals and such and after doing some riding, check everything again. In the mean time I will work up the courage to disassemble it all. I like the foot powder idea, but the areas I need to check won't be accessible with the powder prior to disassembly. Fuke. I hate shit like this and I have a LOT of riding planned for this bike this summer. Oh well, I hope to have it roadworthy tonight or early tomorrow to go out and road test all the other repairs. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Coolant leak at the thermostat housing
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