fwhite02
01-17-2005, 04:14 PM
My son's 400ex started this morning and ran for a few minutes then died. We got it started again and it would run ok for a short while and then die where it was at.
He gave up on riding today, but a couple hours later, we started it and it ran fine for 10 minutes. He loaded up and headed out. When he reached Croom (riding park) the results were the same, started and ran for a few minutes and then died.
Finally, Eric (a friend from RTM motorcycles) suggested that those short hoses with the vent cap might cause problems if clogged. Ben unscrewed the cap and it started fine. He replaced the hose with a normal overflow vent hose and it ran fine the rest of the day.
Boy, I'm glad I don't have to start changing the plug, cleaning the carb, etc.
Thought this was an unusual problem (at least for me).
He gave up on riding today, but a couple hours later, we started it and it ran fine for 10 minutes. He loaded up and headed out. When he reached Croom (riding park) the results were the same, started and ran for a few minutes and then died.
Finally, Eric (a friend from RTM motorcycles) suggested that those short hoses with the vent cap might cause problems if clogged. Ben unscrewed the cap and it started fine. He replaced the hose with a normal overflow vent hose and it ran fine the rest of the day.
Boy, I'm glad I don't have to start changing the plug, cleaning the carb, etc.
Thought this was an unusual problem (at least for me).