Runs HOT - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 4 (permalink) Old 11-01-2015, 03:05 PM Thread Starter
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Runs HOT

I'm Looking for suggestions on what might be wrong, My bike runs Hot, Doesn't go into the red zone but always hovers right before it.

On a side note the starter died on me today. It looks rather complicated to take off. Anyone have experience that can help keep my cost done on getting it fixed.

I have zero knowledge of mechanics. I'm hoping someone with experience can help me keep the cost down of my repairs.
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post #2 of 4 (permalink) Old 11-01-2015, 03:25 PM
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When you remove the starter, you will loose some oil. Put a pan under it or drain the oil first.

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post #3 of 4 (permalink) Old 11-01-2015, 05:37 PM
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Might check the radiator temperature with a temp gun, just to be sure the gauge isn't reading wrong.

The fan normally kicks on when the temp gauge is about halfway. When does your fan kick on? If it's not kicking on until the gauge reads a lot higher, the gauge may be wrong or the fan switch is bad.

If you find it's actually hot, could be a slow or sticking thermostat, low coolant, fan not running, or dirty radiator.

Does it cool down at highway speeds?

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post #4 of 4 (permalink) Old 11-02-2015, 01:01 AM
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Mine has always run on the warm side, even in the winter (here in Phoenix, AZ) in places where it is really cold it will drop while riding on the road at a decent speed, but in stop and go traffic, even at 40 degrees, the needle goes over far enough to cover that little thermometer symbol. That's where the fan comes on. First make sure the fan is coming on, also make sure you have enough coolant in it. It might be a good idea to change the coolant. Check the level in the overflow tank on the right side just behind the engine. A sticking thermostat or dirty radiator could also be an issue. But when thermostats stick, the temp gauge usually goes all the way over real quick. If someone has used water from a faucet in it instead of distilled water, it could also have a lot of rust and corrosion inside the cooling system.

As for the starter, do you know for sure if it is actually the starter, or something else. A LOT of things can cause the starter to not work, and quite a few things can cause it to not work properly. My starter has always turned slow since new, compared to most other bikes I've had. I did take it apart and clean it once, it was just full of black stuff. I also replaced the brushes. It seemed to turn a little faster, but still slower than I think it should. New starter parts are expensive. A whole new starter is nearly $500. I would consider looking on ebay, or on the for sale forum here for a used starter if you are certain that is what it is. How many miles are on your bike? BTW, that's a nice looking bike. I notice it still has it's original air intake system and exhaust system. Finding a stock Vulcan 750 is rare these days.

I am a motorcyclist, NOT a biker.

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2001 Yamaha XT225, heavily modified
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Last edited by VN750Rider/Jerry; 11-02-2015 at 01:05 AM.
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