Seems to be a bit of a problem with them, mine did a similar thing when i first got it, sent a whole pack of fuel into the water pot, Bradley and Canadian replaced the unit no questions asked, impressed, now i have a similar problem starting lots of clicks and whirring no fuel advancement, have cleaned the unit religiously after each use , no difference, the annoying part is that it will work fine for a few hours then screw up, then work fine again,
will have to get back to Can Tire and see what they say i guess.