2003 Yamaha YZ 125 "causes new spark plugs foul" Questions

new float and needle valve in a carburator on a 2000 yz 125 and it is fouling plugs This can be caused by all sorts of things.There is no real order of probability so I'll just list them.Your oil/fuel

...spark plug give out like tht so quick and does it have to do with my new costume fuel filter and my human error..? hi, the problem is that your bike is running to rich( to much fuel from carb to ...

...new plugs) Inline spark tester installed, when cylinder not firing very weak spark noticed, when cylinder started firing very strong spark noted. The first thing I would do is replace the spark plugs ...

...new ones and check for spark. You can do this by putting the new plugs on the plug wire and grounding it to the head on the engine crank the motor over you should see a bright blue spark. Check one ...

...new spark plug cap on your coil, it may have been the cause of the problem to begin with. It is possible to wet foul a new spark plug, therefore if the new plug got wet it could also be causing the ...

...spark Putting fuel mixed with the oil shouldn't hurt anything, you must have just fouled the plug, get a new plug in there and see if it fires. NGK is the best for 2 stroke.. If it fouls out again, ...

Spark Plugs Fouling I have a 1979 Darmah, and am having trouble with plugs fouling. I know leaving the bikes idling for too long is a cause, along with the temperature differences between the front ...

...new ones. I had a CBR 954, and noticed that the spark plugs fouled out pretty easily because it runs so rich at startup (and I would shut it down during the 'warm up' phase). Here is some more ...

...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 exhaust gaskets where the headers ...