Somedays it idles and runs perfectly, and some days it does not. It does it mostly when the engine is warm. When i first start it in the morning it usually runs great. It if fails to idle, it will stay running if i hold the throttle down a little bit. Also, if i turn the key on and off a couple of times, then start it, it will keep an idle. I was just wondering if you could tell me some possibilities of what could be wrong. Any help would be appreciated. Thank you.