Where is this coolant coming from - Kawasaki KLR 650 Forum
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post #1 of 14 Old 03-12-2015, 08:21 PM Thread Starter
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Where is this coolant coming from

been noticing a few drops down to the skid plate after riding so I took the coolant bottle cover off and found the source , even put a zip tie but it still leaks...so how can coolant get there when that hose is the bottle vent. pics attaced anyone else seen or have this issue?
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post #2 of 14 Old 03-12-2015, 08:49 PM
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I can make a case for coolant getting up in the hose by guessing that the level in the reservoir is high enough when cold so that when the engine is heated coolant in the radiator expands and enough is pushed to the reservoir to fill it and push coolant up into the tube.
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post #3 of 14 Old 03-13-2015, 09:10 AM
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Did the wire clamp cut the hose?
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post #4 of 14 Old 03-13-2015, 09:35 AM
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Twinblown,

The hose may just have formed itself to the barb , so the clamp is really not doing anything. It gets pretty hot up in there, the hose may have hardened, too.

Cut a bit off, inspect the tank for cracking around the nipple, and re-install.

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post #5 of 14 Old 03-13-2015, 03:12 PM
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Have a quick peek at your rad cap to be sure that the sealing surface is clean and that it's properly threaded on. It might be weeping from the cap and then running down to the hose barb. Only reason I say this is because my 08 was doing the same thing when I bought it.

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post #6 of 14 Old 03-13-2015, 05:46 PM
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Twinblown,
I'll suggest that you disconnect that 'Over-flow/Vent line' and try to blow thru it. It goes clear back under the rear fender! May be plugged with MUD.

As others have suggested, your reservoir may be over-full and/or the cap and gasket may leak.

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post #7 of 14 Old 03-16-2015, 07:23 PM Thread Starter
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Ok guys, I've checked all the obvious and no the bottle is not overfilled; coolant is between the hi and low level lines. I drained the bottle, removed it and preasure tested it and the are no leaks; I used soapy water and no bubbles anywhere. checked the vent hose and can blow freely out the back so that's not the problem either; don't see any cracks on it either. Anyways I was busy this weekend and have not been able to put it back together. I will post back after doing so and taking it for another drive.
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post #8 of 14 Old 03-16-2015, 07:57 PM
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twinblown,
I'll ask you, did you Confirm that there is a hole thru the bottom and the top hose barbs? Sometimes heat and compression from the hoses and spring clips can collapse the nipples Closed.
The Bottom barb lets the hot pressurized coolant In from the radiator (and allows the Radiator to 'suck' coolant back in) and the Top barb lets the pressure out.

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post #9 of 14 Old 03-16-2015, 08:55 PM
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If you are sure the hose connection at the top of the reservoir does not leak and the overflow hose is not clogged, the the coolant seen in the photos has to come from outside that joint.

How about a spill from adding coolant to the reservoir? Or a small leak at the reservoir cap leaking a few drops from splashes at bumps?
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post #10 of 14 Old 03-22-2015, 08:56 AM Thread Starter
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Well guys put it together yesterday; this time I placed the zip tie on top and the clamp in the bottom to see if it made any difference. Went for a 20 mile ride and some stop and go to get the coolant temp. up. Came back home and the "leak" subsided but is not completely stopped. The coolant is not coming from a spill or the cap. I made sure all that was dry before the drive. Here are new pics. and I can only now think the coolant is getting there in form of steam? what I don't understand is how is getting out if there is no preasure whatsoever in the bottle. Nex I am going to try two zip ties.
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