Join Date: Feb 2017
Location: Denver, Colorado
Barr's Leaks -- Overheating! (please help!)
Hi - I've got a cooling system problem, and I need help from the community.
Summary: I added 3-4 ozs. of Barr's Leaks to fix a small radiator leak, the bike overheated after just a few miles - and I'm flummoxed (and bummed)!
More detail: I developed a small leak in my radiator (10 ml - 1000 miles) on the inside of one of the vertical "vanes" and decided to gave the local radiator shop a try - they gave it back to me a few days later telling me that it cannot be repaired as "the core is no good" due to the aforementioned leak.
I reattached the radiator and tried 3-4 ozs. of "Barr's Leaks", following the directions (fill radiator, idle for short duration, check for leaks). The bike got good and hot (about 2.30 on the thermometer), but the fan didn't go on and nothing leaked. After cooling down, I rechecked the coolant level (OK), buttoned up the Gen 2 plastics and went for a test ride.
It got HOT under load and hit the "2.00" mark on the thermometer after one of Denver's long signal lights and about a mile and knew smothing was seriously WRONG. I went a few blocks, let it cool down to mid-range and eventually made it home again. I can't say whether the fan came on, but I don't think so. I've since pulled the radiator and flushed it out as best as I can, but now I wish I'd not done anything and just lived with the small leak.
Hypothesis: One of the cooling system components (radiator, thermostat, water pump) got clogged by the Barr's Leaks, inhibiting coolant flow and causing overheating. (?)
- What do you think? Is it possible that flushing the radiator will do the trick, or could the water pump and/or thermostat be so plugged up by the "Barr's Leaks" that further disassembly is required?
Thanks, and any advice will be greatly appreciated - I feel kind of emasculated with the bike out of service. [sad, emasculated face]