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BUDBOWTIE
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Discussion Starter · #1 ·
I made the adjustments to the A/F screw (2 1/2 turns out) and put in the Champion RA8HC plugs and now I do not need any choke to start when cold and it runs beautifully after about 1 to 1 1/2 minutes (Ocala,FL and 90 degrees). The second part of my issue is still not resolved. After running around for a while (well into full operating temp), if I stop to take a break and go to fire the bike up after 15-20 minutes, it sputters and misses when giving any throttle, and sometimes dies. If I start it and let it sit two or 3 minutes (even longer than it takes from cold), it will run fine.
I have a K&N air filter (no changes to box), Cobra Classic Slash cuts, 2 1/2 turns out on A/F screw. This is frustrating and hopefully someone has an answer. I have not ventured into the Scar mod (due to limited mechanical knowledge), and have not yet checked the battery cable, but the cable is next. It would suprise me if it is the cable, because it runs well once going and the roughness is limited to hot restarts, but then again, there are a lot of posts about the wildest things that also seemed unrelated that were solved by tightening a loose cable. Thanks in advance for any info anyone out there can provide. :banghead:
 

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you are right cables are next, also make sure the tank vent line is not pinched.

with a 2008 you could also have one of the bad fuel valves, contact the dealer with your vin# and see if it is on the list.
 

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The plugs you put in are a slightly colder plug so you may be a little rich on the mixture screw, might consider an 1/8 to a 1/4 turn in and see if that clears up your problem.
 

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The plugs you put in are a slightly colder plug so you may be a little rich on the mixture screw, might consider an 1/8 to a 1/4 turn in and see if that clears up your problem.
That is odd because they are hotter in my bike.

Jap plugs smaller # is hotter
US plugs larger # is hotter
 
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