Black crud in rad filler - Kawasaki Versys Forum
 
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post #1 of 8 (permalink) Old 03-31-2014, 04:56 PM Thread Starter
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Black crud in rad filler

While changing the coolant I noticed some black crud around the rad filler spout when I removed the rad cap. It seemed to be seated around the bottom of the well that the cap is seated in but I didn't see any in the rad, nor did I see any in the coolant when drained. I assume that it was paint over spray from when the rad frame was painted at new. That tells me the coolant has never been changed. It's an '07 I bought used, from a mechanic!

I cleaned the cap and spout up and added new coolant. Ran as per manual "until the fan comes on" Well, the fan never came on and I have never heard the fan run. The coolant temperature warning light has never come on either, even on hot summer days, so I'm not too concerned about it. I had to add a very small amount of coolant to the overflow container after a good heat cycle.

Looking at the archives here, I have seen quite a number of posts about the fan never coming on. My rad is very clean and the fan spins freely, plus it is quite cool today, about +8C. On my old Connie I could cross two posts coming out of the temp sensor to make the fan come on (to test it), but the V has a different set up, plus the Connie fan came on quite frequently and would run for a few minutes after turning the ignition off on very hot days.

Anybody here find that black crud around the rad filler hole?
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post #2 of 8 (permalink) Old 03-31-2014, 05:17 PM
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That is paint overspray. Fairly common on several makes of bikes.

Fans not coming on could be a blown fuse, fans not plugged in, bad sensor, ect. You can use a non contact thermometer to read the temp while running to see if it should be kicking on. Also a traditional thermometer can be used by leaving the rad cap off. Just use caution due to hot coolant.
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post #3 of 8 (permalink) Old 04-01-2014, 02:14 AM
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Fan comes ON at 102C.

we get the fan on most traffic light junction but our temp over here averages about 34C on normal days.

Leave the bike on idle for sometime and see if the fan kicks in otherwise get it checked.
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post #4 of 8 (permalink) Old 04-01-2014, 04:02 AM
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Black crud in rad filler

Yes I got black flecks in the rad cap as well.

Start the bike and let it idle touch the hoses going in and out of the radiator and feel the temp rise. Be carefull as they can get really hot. Maybe the temp switch is not getting up to temp?
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post #5 of 8 (permalink) Old 04-01-2014, 08:28 AM Thread Starter
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I'm going to get a infra red temp sensor to check the temperature of the rad and hoses . I let the bike idle until the rad and hoses felt quite hot, but maybe I was a bit paranoid about over heating and I shut it down.

I don't really want to start into the ECU to check temp sensor (as per manual) just yet as I'm competent mechanically, but when it comes to electronics my nickname is "Sparks".
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post #6 of 8 (permalink) Old 04-01-2014, 01:16 PM
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Quote:
Originally Posted by Smiley View Post
...as I'm competent mechanically, but when it comes to electronics my nickname is "Sparks".


I TOO belong to the "the-last-thing-they-do-at-the-factory-is-put-the-SMOKE-in" belief, so I try REALLY hard NOT to let it out...!




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post #7 of 8 (permalink) Old 04-06-2014, 09:11 AM Thread Starter
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I bought an infra-red temperature meter to check coolant temps in rad and hoses. Started the V and let idle for 10 minutes or so, checking temperature intermittently. It's quite interesting to see the hot and cool spots.

Anyway, after ten minutes I checked and was right next to the fan when it came on, right as I expected it to, judging by the temp. The reason I have never heard my fan come on is that it is the quietest fan I've ever almost- not- heard. All is well in V land.
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post #8 of 8 (permalink) Old 04-06-2014, 10:16 AM
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My factory fan never came on...it was DOA. Kawasaki wants close to $450.00 for a new one. But one from a 2009 650 Ninja will work just fine, I found one for $16.00 on E-Bay. It is the quietest fan I have ever seen on a bike. And the bike had to idle for long time to heat up enough for the fan kick on.

Or was that look THEN leap?
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