small coolant leak

[naturbar]

was checking over my bike and noticed a drop of coolant on top of the rubber boot of clutch bleeder ... took off the fin (it seems tight before removing) and saw a drop of coolant at the rubber washer. the bike is an 07 RSTD, i have put on 21k miles. can i silicone a small washer on the tab on the inside of fin to place additional pressure on the rubber washer or should i replace the washer - if so do you lose enough coolant to warrant refilling the radiator?

[LilBeaver]

You could just affix a dime/washer/spacer/shim/w.e. to the inside of the fin - or you could do it right and replace the plug.

 

Mine started leaking there too. If I recall correctly the plugs were 3-5 bucks a piece. I just went ahead and replaced all 4 (flushed/changed the coolant while I was at it). I'm glad I did, the other 3 were cracked and dry-rotted too. I figure it was just a matter of time before they start leaking too.

 

Note that the the threading on the end of a spark plug matches the threading inside the little rubber plug deal - to make for easy removal. You will loose some coolant when you pull those out, a pop bottle cut in half makes for a great 'catcher'.