Coolant Leak at Drain Plug
I just replaced the coolant on my Gen III using the simple drain and fill with Yamalube. I reused the OEM copper washer/gasket per the prevailing wisdom that is OK. Unfortunately there is a very small leak at the drain bolt now. I confirmed it is the drain bolt and not the water pump hoses. The leak is very slight and maybe a drip every two hours. I put a shop rag under the bolt to catch the drips while I decide what to do next.
So the question is, did I miss something such as an extra step to apply silicon sealant to the bolt? There wasn’t any when I removed it. Alternatively, does a little coolant dry and seal the bolt over time? I have a new copper gasket on order so I can replace the one I reused, but thought I’d poll the forum in case there is some FJR wisdom I missed.
Current: 2013 Triumph Rocket 3 Touring - Rosie
Former: 1979 Honda CB750, 1994 Honda Magna, 1995 Honda Magna, 1982 Honda CBX, 1997 Honda Magna, 1997 Honda Valkyrie Tourer, 2013 Yamaha FJR1300 - Gutnis
Last edited by wiggy1; 02-26-2018 at 08:02 AM.