Posted January 04, 2011 - 08:03 PM
A few days later I am cleaning the bike and doing routine maintenance. I start the bike up and let it idle for about 5 min. Normally she takes a while to warm up but this time it seemed like she was running very hot right away and it sounded like there was a clacking noise on the right side of the engine. I recently replaced the radiators with some aftermarket ones. Did that before the last ride. Is it a coincidence that the oil puking out the airbox and the bike running hot happened on the same ride? The bike starts up and idles ok, other than the slight clacking noise. How can I tell that the radiator is functioning properly and circulating fluid? I noticed that there was a few drops of fluid from the left radiator. I popped the cap while it was still running (carefully) and the fluid was at the top and eventually started to run out the top. The reservoir has some fluid, just a little below the line.
What should I do to troubleshoot the radiator (or water pump) and make sure it is working properly? What about the oil issue? Should I be concerned about that?
Posted January 06, 2011 - 01:21 PM
Anyways speed is a huge factor in sand. The slower you go the harder the engine works to propel the bike forward, harder working engine generates more heat.
Check your leaking radiator, an unsealed system will allow the bike to overheat. Check the radiator cap, make sure it releases at the correct pressure. Pressure test your cooling system once you fix the radiator leak to determine whether you have a leak elsewhere.
What year 450 are you running ?
Posted January 06, 2011 - 07:10 PM
Anyway, not my real problem. I bought the Chinese radiators you see on e-Bay. My old ones were twisted. So i thought I was stoked on them. They seem larger, more cooling capacity and nice welds and fit perfect. I hope i didn't buy crap! Everything worked well for 90% of the ride. Didn't notice the leak until the end of the ride. I tightened all the hose clamps again so now I dont see anything drip. Can't see where the leak is coming from but I still see steam and can smell it. I know it's rad fluid. How do i pressure test the system? Do i buy some pressure tester from Pep Boys or something? If i find one what should the pressure reading be? Do i need to drain the fluid to test?
I need to get this fixed cuz i ride again on Sat. Any help is appreciated.
Posted January 07, 2011 - 08:02 AM
Can't see where the leak is coming from but I still see steam and can smell it. I know it's rad fluid. How do i pressure test the system? Do i buy some pressure tester from Pep Boys or something? If i find one what should the pressure reading be? Do i need to drain the fluid to test?
Yes, check with an auto parts store for a tester. Yamaha makes one, too. You should test with the fluid in it to help find the leak. The cap is supposed to open at 15.6 psi. I would give the radiators no more than 20 psi to test. The pressure raises the boiling point of the antifreeze, but not by alot.
Posted January 10, 2011 - 09:34 AM
So i ride all day on Sat in Glamis. No steam, no problems, no crashes, just another good day in the dunes.
So although i don't have any proof i think it must have been a just barely loose clamp on the top hose. Dripped a little fluid into the radiator fins and it just took a good solid ride to burn it off. I would have thought all the running in the garage to troubleshoot the thing would have burned that coolant off. I mean i let it run for like 10 minutes at a time at least 3-4 times..... But oh well, I'll take it. Chalk it up to Gremlins and shrinkage I guess.
BTW, Glamis was pretty tore up this weekend. Tracks everywhere... I guess between the New Yrs crowd last week and the rains, the sand was packed and rutted. My buddy on the quad practically rattled his fillings out. That's why 2 wheels is always better than 4!!!