2003 Yamaha YZ 250 "causes plugs foul carb motorcycles" Questions

...foul plugs every few hrs at ratio of 35:1 on Shell premium, but on Caltex vortex with the motoul 800 premix oil was perfect, smal plug 12 months now. U see the premium petrol has various detergents ...

...fouled plugs. How do you stop from running rich? 2006 hammer. What has been done to the bike resently? If you havent changed anything with the air intake or the exhaust then you my have carb

what would cause plugs on a stihl 260 brushcutter to be covered with soot, fouling when I change to plug the machine starts and runs fairly well until I try to use it then it chokes off ,, and plug is

...plugs? If its gasoline, you have a problem with the carburetor. In this case, I'd need to know what kind of carb is on the engine. Is it the original Keihin or has someone put an aftermarket carb ...

...plugs will foul within about 20 minutes. Is the bike meant to be tuned for the riding style? this might b out of price range but new carbs and electronic ignition will still have to tune also, or get ...

Bike is back firing Have you tried new spark plugs? One fouled plug or bad spark plug cap can cause backfiring. Possibly dirty carbs ( a stuck float). Backfiring on deceleration can be caused by bad ...

...causes of excess fuel: leaky carb float valve, carb fuel level too high, mixture maladjusted, blocked air filter... Possible causes of excess oil: oil level too high, piston rings, valve guides, too ...

spark plugs i have to replace my spark plugs every ride what do i do to fix it?? Sort your carb settings out...it sounds like you have an over-fueling problem causing the plugs to foul.

...top end bored and new rings as well) but no improvement on sooty, fouled plugs. What's up? Have a look at the carb float levels. This is one of the primary causes of an engine running

new spark plugs, air cleaner, plugs are carbon fouled, bike wont idle, what causes this, and how can i fix it Check the float and needle seat. Is it a stock Carb?