I know this is a bit off topic, but . . . I got out my lawnmower yesterday and went through and did a full tune up on it so I could mow the yard. After two hours of work trying to figure out why it wouldn't start I tried to see if it was pulling air into the carb and once my fingers blocked the intake it started!? I could only get it to run if the air intake was blocked almost entirely /forums/images/graemlins/dunno.gif It seems that it is geting too much air with the choke closed as far as it will go. Does anybody have any idea what the heck is going on and how to fix it. /forums/images/graemlins/1zhelp.gif Oh yeah it's a Briggs 6hp that has otherwise always run great.