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(Date Posted:09/29/2008 5:48 PM)
I've recently purchased an 83 XL600 (got
it from the original owner with 7200 miles) and have been fighting
with getting it to run correctly beyond about 3/4 throttle, mainly when running on the
secondary carb. The bike runs great up to that point then essentially
bogs/cuts out. The bike was purchased in CA and
has a supertrapp on it. I live in CO at about 5k feet. I popped the main jets out of
each carb, they'd never been changed - main #125, second #112. Checked
the plug - white as snow. It was obviously lean, which in doing
research, looks like the norm with early XL's. The carbs
have been cleaned, and I've been working on upping the jets to see if
this will rectify the hesitation/cutting out I'm getting when engaging
the secondary carb. As of yesterday and after a lot of trial and error,
I put a 128 in on the main and 122 on the secondary. I'm going to drop the
secondary down to a 118 because at this elevation 122 is a little rich. I
also popped the "snorkel" out of the airbox to get air moving better.
As mentioned, the bike runs great... until it's basically pegged then
it surges, hesitates, etc. I've dug around on the forums here and have
seen several similar issues with the dual carb setup but couldn't find
anything that exactly matched what I'm experiencing. Regardless of the main jets I'm messing with the bike still runs poorly when rolling hard on and hard off the throttle. Just wondering if
anyone has any input on this. Thanks for your time!
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