Discussion Starter · #1 ·
I just got my 2003 300ex a few weeks ago. When I got it the valves were rattling pretty loud so I took it to a local shop to have the valves adjusted. Got it back home and it was running fine but the valves were still making a lot of noise. I did the research and decided to try it myself. No problem but same amount of noise. The thing is, I went to the woods for about a 30 minute ride with no problems, came home and decided about an hour later to go back out to the woods. Got on the bike, started right up but died after about 5 seconds. Tried to start again and it gave me trouble, got it started and went to take off, bike died as soon as I touched the gas. Took the carb off and the pilot was slightly clogged so I cleaned it. Started the bike up and it died again. Now it will only try to start or start for about a second then die. It is getting gas and good spark. The valves seem to be adjusted right .005 on the intake side and .004 on the exhaust. What are some things that could be wrong?