Wr400 Stalling problem
Posted January 13, 2005 - 02:28 AM
Posted January 13, 2005 - 06:00 AM
What problems were you having before you changed the plug (i assume that's why you changed it-as I've never changed my spark plug)? Did you do anything to it after changing the plug-like wash it and put it immediately away? I think we need more to go on here.
Posted January 13, 2005 - 07:00 AM
Even thou' it was OK at first - did you "gap" the plug correctly before fitting it ?
And one tip, if you're not using your bike for a while, it's good practice to leave the piston at compression (almost TDC) - this keeps the valves shut and stops moisture entering the cyclinder.
Posted January 13, 2005 - 07:24 AM
Posted January 13, 2005 - 11:26 AM
OK, try this.... take a look at your pilot and main jet.
Drain the fuel out of your float bowl by undoing the small float bowl drain screw. Then, undo the large screw directly located on the bottom of your carb float bowl (you may want to rotate your carb first for better access). Take a look in the bottom of this srew - if it has (dirt) particles floating around, it's possibly one of these that may have got lodged in your pilot jet, hence no or rough tick-over. Unscrew the pilot and main jet and give them a good "blow job". Hold them upto the light - you should be able to see light down them if they're not blocked. Refit and try again - if this cures the problem, you should fit a 'fine' type fuel filter (servicable sintered brass type are best) before your carb, as dirt in the fuel tends to get past the fuel tank filter.