Puffing the white smoke. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 10-28-2013, 08:28 AM Thread Starter
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Puffing the white smoke.

So this week riding around, I noticed a very sweet smell while riding.
I knew right away it's the coolant. But I thought maybe it was another car since I didn't see any leakage.

It happened again yesterday, same smell. I checked the temp and keep my eyes on it, ran normal. Fluid reservoir was a little low, so I added a little water. Another 15 minutes of riding and stopped, there's liquid coming out *somewhere* and white smoke come up. Seems the liquid is coming from under the tank from one of the hoses, and hitting the exhaust / engine block and smoking up.

Anyone else experience this and know what it could be? I'll tear her down today and hopefully it'll be an easy fix.

2002 Vulcan 750, bought 10/2013 w/ 6300 miles.
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post #2 of 8 (permalink) Old 10-28-2013, 11:05 AM
..have a vulcan good day!
 
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Originally Posted by vinhtvu2 View Post
So this week riding around, I noticed a very sweet smell while riding.
I knew right away it's the coolant. But I thought maybe it was another car since I didn't see any leakage.

It happened again yesterday, same smell. I checked the temp and keep my eyes on it, ran normal. Fluid reservoir was a little low, so I added a little water. Another 15 minutes of riding and stopped, there's liquid coming out *somewhere* and white smoke come up. Seems the liquid is coming from under the tank from one of the hoses, and hitting the exhaust / engine block and smoking up.

Anyone else experience this and know what it could be? I'll tear her down today and hopefully it'll be an easy fix.
....just off the top of my head....
iirc a few have had similar issues.

I would expect a coolant hose/clamp problem.

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...have a vulcan good day!

Last edited by WilliamTech; 10-28-2013 at 11:15 AM.
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post #3 of 8 (permalink) Old 10-28-2013, 11:25 AM
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there is a hose that goes from the radiator cap/thermostat to the rear cylinder. The hose is held into place on the rear cylinder with a 10mm bolt and uses an o-ring... Generally the o-ring deteriorates, but occasional the bolt itself works its way loose. I would start there and also look at the hose for evidence of a leak.
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post #4 of 8 (permalink) Old 11-01-2013, 07:25 PM
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I would remove the tank, and run it without the tank. Let it run till the fan comes on. that should build up normal operating pressure. With the tank off, you can pretty much see the whole cooling system and all the connections. I have had the elbow to the rear cylinder leak even with a new 0-ring. It's not a very solid connection. I just bumped that elbow while working on it with the engine running, and it sprung a leak.

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post #5 of 8 (permalink) Old 11-02-2013, 11:12 PM
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...white smoke ?....Cheech and Chong.....lol....sorry....coudnt resist.....

....mine puffs a lil white when cold....goes away after it reaches operating temps....its condensation in my case....I get a few drops of water outta my crank breather too until hot...(Chevy valve cover breather)....

Big thing to watch, is if you get too much condensation, then park it where its gonna be 20 overnight, that can be bad....might want to add a lil SeaFoam to your oil just prior to your next oil change...will clean the crankase walls and help in dissipating moisture....

If you live in a cold environment, and keep yer bike in an unheated garage....invest in a small electric heater...point it at the lower crankase, and preheat before you try to start it....we used to do that with diesel skidders, except we started lil campfires under em....wasnt no electric there....same holds true with any oil lubed engine in the cold....if you can preheat somehow, do so.....




Last edited by Wolfie; 11-02-2013 at 11:17 PM.
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post #6 of 8 (permalink) Old 11-02-2013, 11:19 PM
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Dave?Dave's not here.mine smokes a little when cold but she's old enough .

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post #7 of 8 (permalink) Old 11-03-2013, 12:20 AM
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...hay...when theyre that old, theyll do all kindsa funky things....my fishtails even spit at me until Bess warms up....long as they run good when warmed...who gives a rat's azz ?....



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post #8 of 8 (permalink) Old 08-07-2014, 11:37 AM Thread Starter
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All is fixed. It was just a loose hose.

2002 Vulcan 750, bought 10/2013 w/ 6300 miles.
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