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Discussion Starter #1
Hello, Hoping to get some help .
I have a 2012 DL650A with 66,000 miles. Been a good bike.
Just got done doing a bunch of maintenance a week ago (valve check, new coolant, new spark-plugs, Cleaned the KN air filter, moved the power outlet, and installed a new radiator screen i made myself).
Since then I have been having some coolant leaking out of the right side of the bike getting on the fairing and getting my right pant leg wet.
Last night it got so bad that the i got a high temp warning on the way home.
When I took everything back apart today to take a look, the coolant was down probably 2/3 in the radiator. Since then I have filled it with more coolant and did a pressure test.
Couldn't get the radiator to hold pressure and heard a hissing sound. Also, I saw some coolant leaking out near the top of the radiator (see Pic)
I don't see any obvious damage.
So without going out and getting a new radiator, is there a way to fix this?
Has anyone used K-Seal Coolant Leak Repair or the like to seal the leak on a bike? I am afraid on a bike with the smaller passageways it might clog it up.
 

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Discussion Starter #2
Hello,
I just got done Doing a bunch of maintenance on my 2012 DL650A a week a go ( valve check, changed spark plugs, change coolant, cleaned air filter) and installed a self made radiator protector.
Since then, I have had coolant leaking from the right side of the bike. it has also gotten on my pants. It has gotten bad enough that i got a warring light for high temp last night.
When I took it apart today, I had lost quite a bit of coolant and can see some coolant on the radiator near the top. (see pics)
I was able to do a pressure test and could not get it to hold pressure.
Is there a way to fix the leak without replacing the radiator?
Has anyone used K-Seal Coolant Leak repair or the like with good success on a bike? I am worried that the passage are to small on a bike and would get clogged?
 

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Obeone-

You may be better off having the radiator repaired by a competent shop...they can pinpoint the leak, solder the affected tube and pressure test to ensure serviceability. Google radiator repair shops in your area to see if you can find a local to repair.
Also, before removing radiator, etc. you should at least test/replace cap to ensure that is not the issue.
 

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You need to establish where the coolant is coming out. Since you worked on the coolant system how about the various hose connections? I assume these are the original hoses and re-attaching them may not seal them well initially.

Anyway remove the radiator protector so you can see what's going on and then run the engine until the fan comes on. You will see where the coolant is coming out. If difficult to spot I think sprinkling some flower on the suspect areas will show the leak more clearly.

If the radiator is cracked I would see if there is a replacement to be go on e-bay.
 

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My radiator developed a leak in about the same spot. Do not use any type of sealant. It will clog internal engine coolant passages. You can ship the radiator to https://www.motorcycleradiators.com/. I used them. Reasonably priced and cheaper then a replacement. I couldn't find a local radiator shop that could or was willing to repair an aluminum radiator.
 

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Discussion Starter #7
I will take it apart later today.
I did already check all of the hoses and contentions. first thing I did, after I checked the forum.
Thanks for the advise on the sealants.
I will see if i can find a local shop who could repair the radiator.

Thanks for the help.
 

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Discussion Starter #10
Just got the radiator back form a local radiator repair shop.
Highly recommend them if you are in SoCal, Kirk's in El Cajon.
Got it back together tonight and took it for a test ride.
So far no issues.
attached is a pick of the fix.
 

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