justin_o_guy2 wrote on 01/08/08 at 17:53:41:Well,, awwrite, it feels good that sometimes I wonder & it works out. NOW, I have an old comp checker, but no attachment that lets it screw into my bike plug hole. Paid good $$ for that thing, I think it's a Proto, but how can I get it to work on the bike?
I assume it is the type of gauge that will retain the pressure reading and has a pressure relief....But what happened to the attachment? You can get a complete set at Harbor Freight if you need, anyway.
Here's how you do it though...
Remove the left chrome head cover (raise tank if needed), then start engine and let it warm up. Then remove the plug and screw the hose in...
Then crank the engine over while holding the throttle wide open (so that you don't create any intake vacuum) and turn the engine over until you get it as high as it will go.
Stop and read gauge. If happy, put it all together. If not happy, tear that puppy apart