I looked in my service manual and searched the hallowed archives of the TT forum but I did not find a procedure for a leakdown test on my 03 wr 450. I understand it's the alternative to a compression test on a bike with an auto-decompression mechanism and I'd like to buy the tools so I can do it. just not sure on the procedure. I see the results posted in "%".
How do you do it? with a vacuum guage rather than a pressure gauge? % retaliative to what?