Vulcan 900 running to hot? - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 25 (permalink) Old 07-07-2010, 06:08 PM Thread Starter
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Vulcan 900 running to hot?

My 900 has been runnning a little hot lately. Like the fan kicks on constantly and blows hot air and the engine and the pipes get really hot (more than normal). It seems like it happens most when i get above 85. It also seems like my max speed is only around 100 -105 when before it was like 120. I live in Arizona so its pretty hot right now but I'm pretty sure my engine is running to hot. Also I don't have any engine lights on.

Anyone experience this before, should I worry?

O and my bike has about 21 000 miles.

2008 vulcan 900 Custom (passion red)
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post #2 of 25 (permalink) Old 07-07-2010, 06:54 PM
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Originally Posted by Mrgoosell View Post
My 900 has been runnning a little hot lately. Like the fan kicks on constantly and blows hot air and the engine and the pipes get really hot (more than normal). It seems like it happens most when i get above 85. It also seems like my max speed is only around 100 -105 when before it was like 120. I live in Arizona so its pretty hot right now but I'm pretty sure my engine is running to hot. Also I don't have any engine lights on.

Anyone experience this before, should I worry?

O and my bike has about 21 000 miles.
Lemme get this straight: you live in one of the hottest states in the US, you're running the piss out of your bike, and you think it's getting hot? Hell YEAH, it's getting hot! But if you've got no idiot lights on and it's not puking coolant all over the pavement, it's not TOO hot.

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post #3 of 25 (permalink) Old 07-07-2010, 06:58 PM
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If the fan is on when cruising try adding a water wetter, flush-clean-check the cooling system, and/or slow down.

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Last edited by 1945; 07-07-2010 at 07:04 PM.
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post #4 of 25 (permalink) Old 07-07-2010, 07:17 PM
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Water wetter works great........I'd try that first and keep an eye out to see if it gets better. Maybe you can use a point and shoot temperature guage to get a range of temps before and after.

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post #5 of 25 (permalink) Old 07-08-2010, 07:39 AM
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Okay, what is this water wetter stuff?! Never heard of it before. My bike doesn't run too hot or anything, but still I'm gonna have to look into that. Only the best for my baby!
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post #6 of 25 (permalink) Old 07-08-2010, 07:45 AM
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What weight oil are you using? I would be running a 20w50 for sure. Be thankful you got a waterbag an aircooled would be much worse.
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post #7 of 25 (permalink) Old 07-08-2010, 08:12 AM
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Quote:
Originally Posted by MINI NSX View Post
Lemme get this straight: you live in one of the hottest states in the US, you're running the piss out of your bike, and you think it's getting hot? Hell YEAH, it's getting hot! But if you've got no idiot lights on and it's not puking coolant all over the pavement, it's not TOO hot.
LOL.

Try this. http://www.redlineoil.com/product.aspx?pid=111&pcid=21

I would also think about an oil cooler (mod maybe 2) on that sucker. Don't mount it in front of the rad. You'll have to buy a crashbar and stick it(or them) on that. Cheaper than a motor.
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post #8 of 25 (permalink) Old 07-08-2010, 08:18 AM
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There is an engine coolant called Engine Ice (http://www.engineice.cc/faq.html) which we used to replace our coolant in Voyager 1700's (they get hotter than anything I have ever experienced!). I noticed a big difference when idling in traffic for long periods of time but not much of a difference at highway speeds (um, for this old lady that would be 80mph, lol). And, we live in Tucson, where the summers are so hot that the devil goes back to hell to cool off.

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post #9 of 25 (permalink) Old 07-08-2010, 09:15 AM
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If your engine temp idiot light is staying off, and you have no issues with coolant boil overs, your engine is not overheating. Yes running at 85+ mpg in 100+ degree temperatures will make the engine run on the hot side of it's operating range, the fan is just doing it's job to try and cool it back down if it's running all the time.

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post #10 of 25 (permalink) Old 07-08-2010, 09:32 AM
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Ditto to the above responses.

If your lights aren't on and there's no overflow, it's within the bike's specs. But i hear you; I'd be concerned if the fan kicked on while on the highway too, even if it was 110+.

The water wetter in the coolant will certainly help it get rid of the heat faster.

When i was there, i changed my oil twice a year... summer was 20W50, winter was 10W40 and a new filter.

I do have one other suggestion, however. I think that the valves are due to be checked at 15000 mi (not sure about that). Incorrect valve settings could cause more heat too, so that's something you could check.

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