I just bought a 05 Raptor 660 used from Craigslist. The Raptor wouldn't start because of a dead battery and the previous owner hadn't started the Raptor in over a year. This is what the bike has that I know of, Alba full pipe, K&N filter, air filter lid off and some kind of computer mod.
So I replaced the battery and started the bike. It ran but not very well. Ran better with choke on, but the exhaust seemed to get really hot. Also if the gas was left on, gas would pour out of the bottom of the carb. So I figured the pilot jets were plugged at the very least and I would tear the carbs apart for a inspection.
Removed both carbs, pilots were a little plugged but mains looked ok. Also found the floats were out of specs. So I cleaned the jets, adjusted the floats and reinstalled the carbs. Bike runs alot better at idle, exhaust header temp seems normal and the bike sounds good. But the mid range seems to have a hesitation or dead spot, once the bike gets thru the mid range it really hauls the mail! But it also pops and backfires on decel. And I stiil have the gas running out the bottom of the carb problem if the gas is left on.
At this point I've already pulled all the magic tricks from my bag and was hopping that someone had a fresh idea.
Carb specs
Left has a #155 main, 22.5 pilot and 5 groove needle with the clip in the middle.
Right has a #160 main, 22.5 pilot and needle is the same
Thanks in advance, Caddyman
So I replaced the battery and started the bike. It ran but not very well. Ran better with choke on, but the exhaust seemed to get really hot. Also if the gas was left on, gas would pour out of the bottom of the carb. So I figured the pilot jets were plugged at the very least and I would tear the carbs apart for a inspection.
Removed both carbs, pilots were a little plugged but mains looked ok. Also found the floats were out of specs. So I cleaned the jets, adjusted the floats and reinstalled the carbs. Bike runs alot better at idle, exhaust header temp seems normal and the bike sounds good. But the mid range seems to have a hesitation or dead spot, once the bike gets thru the mid range it really hauls the mail! But it also pops and backfires on decel. And I stiil have the gas running out the bottom of the carb problem if the gas is left on.
At this point I've already pulled all the magic tricks from my bag and was hopping that someone had a fresh idea.
Carb specs
Left has a #155 main, 22.5 pilot and 5 groove needle with the clip in the middle.
Right has a #160 main, 22.5 pilot and needle is the same
Thanks in advance, Caddyman