Agreed!FruDaddy said:Changed my mind about this one.
76GMC1500 said:When you let the bike idle for a long time to warm up, it loads up the engine. Then, when you try to take off, it makes no power and spews smoke. All of our 2-strokes will do this, the longer you let them idle the worse it does it. You shouldn't need to change the plug, just stay on the throttle for a minute and clear out the engine. If you run up thorough the gears at full throttle, it should clear out by 3rd gear or so. Personally, I don't idle my bike to warm it up. I start it up, run it for 30 seconds to a minute, stick it in gear and start cruising. After a minute or 2, I clear it out by running up through the gears and it's good to go. You should never really leave your bike to idle for extended periods.
Ryan314 said:Well I noticed that when I use the choke to start it, when it first fires up, it revs really really fast for about 5 seconds, then revs normally. Is this normal?
Ryan314 said:First of all, this is me ---> :yell:
My YZ runs absolutely fantastic. Power is there, power is smooth, never fouls plugs while riding, it's pretty much perfect. But, when it comes to starting it up after a day of riding or so, there in lyes the problem. Bike starts up first kick every time, and I don't even need to use the choke. But usually (sometimes it doesn't), the plugs fouls on start up. After letting it warm up some, when I go to take off, it makes a bogging sound, and the bikes shuts off. Fouled plug. So then I put a new plug in, and she runs perfectly normal :bang: . I always shut the gas off and my plugs look healthy after riding, brownish/tanish color. I run BR8ES plugs and Yamalube 40:1.
What could be the problem here? Is it a jetting issue, even though my plugs look good? I feel it has something to do with either:
A.) Not letting the bike warm up properly, or long enough
B.) The motor gets too much of a rich mixture on start up, causing it to foul.
I've tried adjusting the air screw, leaning it out some, but it doesn't seem to be helping.
What should I do!? I'm so tired of having to change the plug every single time. :bang: :yell:
Maybe so, but you misunderstood the post. I still think it's the pilot, although there are a few other good ideas here as well.BSWIFT said:Agreed!
I was wondering the same thing. The only time my '01 KX125 fouled plugs was after I'd installed a fresh air filter (and let it sit overnight). I was using Maxima air filter oil. When I switched to NoToil, it never fouled another plug in the remaining 3 months I owned it. When I got my YZ450F, I cleaned the stock filter and re-oiled it with Maxima. Guess what? It fouled a plug. My new Twin Airs came in the next day and I used No Toil on them. It's been a year and I'm still on the same plug I installed the day it fouled. Also, I used to use Maxima on my Grizzly 660 and guess what? Yup...it would foul plugs after a couple months. Installed a new Pro Moto air filter, switched to No Toil...been almost a year, no fouled plugs.Ryan314 said:Could it have anything to do with the air filter?
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