QUOTE (Danny T @ Mar 25 2009, 08:55 AM) index.php?act=findpost&pid=761958
is there any gas in the tank?Hello everyone,
Ok so i don't own a yfz but my close friend/neighbor does.
Help us diagnose this issue.
Model/Mods: 2008 YFZ 450
Spark Arrestor Out
So the bike starts right up when not warm (cold start) and once warm will only have a slight pop on accell when in idle. But when under a load there is no pop, occasionally a bog when at slow speeds and stabbing the throttle.
After riding for 20-30 minutes the bike will have a huge bog and eventually (5-10 seconds later) cut off.
Then it becomes extremely hard to start, only starting with the choke on.
So far we have changed the spark plug, and thats all. I plan to change his Pilot to 45 and up the main jet a bit (165 or 168). But do you think this issue is different then jetting?(current jetting is stock)
ALL input is greatly appreciated.[/b]