coolant leaking - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 03-16-2007, 09:05 PM Thread Starter
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coolant leaking

I have a 97 vn750 with about 45,000 miles on it. I took off the carbs earlier today to give them a good cleaning and replace the float needles. After re assembling everything it started up fine, but then I noticed an awful smell of burning antifreeze. After investigation it appears that it is coming from the rear cylinder where the hose goes into the top. Does anyone know how to fix this or does anyone think it is coming from somewhere else and just looks like it is coming from there. The bike was running with no leaks until I messed with it. and everything by the thermostat and radiator cap look to be re assembled correctly

Thanks for the help
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post #2 of 5 (permalink) Old 03-16-2007, 09:41 PM
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Did you check the hose clamp?

If it is the metal line you are talking about, there is O rings on it. Maby you moved it a little and cracked a O ring.

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post #3 of 5 (permalink) Old 03-16-2007, 09:54 PM
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I second Chad's clamp check. Clymer's says to remove all those hose connections when you pull the carbs, doesn't it? Sounds like you did pull apart various coolant connections (e.g., thermo, etc.), and it's easy to not get the clamp back on quite tight enough. I think that's the only coolant line anywhere near the rear cyl, so focus on that connection.

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post #4 of 5 (permalink) Old 03-16-2007, 10:01 PM Thread Starter
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it is the metal one

I think I am going to have to get a new o ring that is where it is leaking from and pretty bad too. I will make a trip to the ole bike store tomorrow and see if I can't get it taken care of
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post #5 of 5 (permalink) Old 03-18-2007, 11:18 PM
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I just finished a protracted stator replacement (couldn't bring myself to finish the job in the middle of winter) and I had a coolant leak where the solid 90 degree pipe meets the cam cover. After pulling it I noted that the O-ring was pretty much flat. I had a stash of O-rings but none were just right.
I wound up pulling the O-ring off, circling the pipe 6-8 times with teflon tape where the ring seats, put the ring back on and put 'er back together.
I figured it couldn't hurt and lo and behold it's perfect.
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