Bonneville America Forums Forums Technical Forums Performance Mods What size jets?

I just installed epcos,I have the freak.145 pilots with 2 shims and 155 mains.The plugs indicate that I may be lean.How long should I ride befor checking the plugs?

You can do a plug check anytime you want.
Put new ones in first, then take a plug wrench and hit the road. Wind the bike up to 3/4-WOT in 3rd or 4th gear and at the same time - hit the kill switch and pull in the clutch. Coast to a stop, pull plugs and check them Ouch, it's hot in there, be careful. Also be sure to find a safe stretch of raod to do this on, flat is best. That is called doing a "Plug chop" and is the best way to do a plug check without any special tools.

Edit: Let me add that instead of changing your jets, put some TBS needles in and see what that does. It will richen you up in the 1/2 to WOT as well as get rid of any mid throttle laziness.

The bike pulls strong but the cone in the center of the plug is white ,I was going to switch to 160 mains and 48 pilots.The bike is a little hard to start when cold.