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TominMO · 12-06-2022, 10:05 AM

One way to get air bubbles out is to position the bike so that the radiator cap is at the high point of the radiator, i.e. uphill. Start the bike with a cold radiator, and the radiator cap off. If the coolant is circulating, the bubbles will get to the uphill cap and burst. When the coolant gets too high, put the cap back on. Might have to repeat one or two times for a complete job.

If your rad cap is on the right, then just putting your bike on the sidestand would qualify as uphill.

12-06-2022, 10:05 AM	#13
TominMO Join Date: Sep 2021 Location: De Soto, MO Posts: 1,868	One way to get air bubbles out is to position the bike so that the radiator cap is at the high point of the radiator, i.e. uphill. Start the bike with a cold radiator, and the radiator cap off. If the coolant is circulating, the bubbles will get to the uphill cap and burst. When the coolant gets too high, put the cap back on. Might have to repeat one or two times for a complete job. If your rad cap is on the right, then just putting your bike on the sidestand would qualify as uphill. __________________ 2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself Last edited by TominMO; 12-07-2022 at 07:47 AM.
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