Slow/idle jets for CL77 at higher elevation

[RetroBiker]

Hi everyone,

I've been having idling issues with my newly rebuilt engine, so I checked the slow/idle jets and the right hand cylinder (which was not running properly) had a blockage in the slow jet! After some work I cleaned it out, and while the bike runs now it still is not idling great no matter what I do with the air or throttle stop screws. I'm in Denver at over 5,000 feet of elevation, and some info I've found online suggests I try smaller jets (i.e. #38 or #40). Currently I've got #42's for idle jets.

Does anyone have experience with higher elevations and does this suggestion of using smaller jets make sense to you? If so, does anyone have a pair of good OEM idle jets in these sizes I might be able to purchase? Ebay is filled with options, but I'm leery of buying foreign aftermarket parts. I have enough challenges already. :-)

Thanks Guys.

[Tim Allman]

I was just looking at the Honda Common Maintenance Repair Service Manual (section 8) and see that they recommend adjusting the idle screw for high altitude and installing a smaller main jet. Keep in mind that the main jet will have little, if any, effect on the idle so it won't help your problem.