Are you losing gear oil.
When the crankshaft seal leaks, oil from the gearbox is sucked into the crankcase, and this can foul the plug.
Also check the plug gap, most guys set the gap too small. It should be 0,7mmto 0,8mm. The plug should be a B9 EG, or equivilant.
Now, you can also change the plug cap to a type that has a built in resistor, this also helps with plug life.
Note that 2 strokes use plugs way more than 4 strokes, and you should replace the plug every 15-20 hours to keep your riding pleasant.
Good Bike you have there
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Hi, Michael your bottom end may be filled with gas remove spark plugs and turn over the engine for 30 seconds clean spark plugs that are probably gas fouled and reinstall get the bike running for a couple of minutes then replace engine oil. Good luck and have a nice day.
Hi Anonymous, hopefully it's just gas fouled not oil fouled, noticed by white smoke out of exhaust. Anyways here is a short list of could be's: battery voltage, charging system, ignition components need at least 9 volts to function, spark plug, spark plug cable, ignition coil, ignition module. Good luck
Hello.....sometimes when you overfil the crankcase..the engine develops high pressure and the gaskets will fail...or in your case...the excess oil will make it's way into the combustion chamber and foul your spark plugs...The first thing you need to do is drain the excess oil...and get it down to the proper level...Then take out the spark plugs..if they are black and oily...clean or replace them......Then try to start it....If it starts..it will smoke fo a while as it burns off the oil in the combustion chamber...then it should be fine...Be careful no to over fill the engine again....Let me know what happens...I hope this was helpful....PEACE.....
hi, the problem is that your bike is running to rich( to much fuel from carb to engine) so its the un-burned fuel mix that your seeing on your plug and thats fouling it out......now this is caused by either to rich of fuel mixture(you should be mixing 32:1) or you need to rejet carb so it delivers less fuel to engine... your carb has a jet in it and the # is stamped on it ( if you take the carb off and remove the bowl( 4 screws) you will see it,it will have an octagon shaped head.) for example if the # on it is 55 then you need to go with a 53 or 54...... also a good sign you need to rejet with a smaller jet is your bike will spooge(leak) a black oily residue from exhaust pipe and muffler( same residue thats fouling the spark plug.)
As for the noise in the engine, could be alot of things. If your plug is very oily, then it's probably fouled. That would make it difficult to start & possibly run rough. Pretty common with 2 strokes. Sounds like your mixture on your fuel has too much oil in it when you mix it. Make sure you're mixing your fuel properly then I would check on rebuilding and adjusting your carb if your fuel mix is right. Hope this helps
norm - brown grayish-tan deposit on side electrode.
carbon fouled - black, dry fluffy soot on insulator tip and electrodes
oil fouled - wet, black, oily deposits on " " " "
burned - blisters on insulator tip, and electrodes
worn - severely erroded or worn electrodes
You're going to have to look at what your plugs look like when you take them out. If they look really black and sooty, or black and oily, they're probably fouling. If they're oily looking, you are getting oil into your combustion chamber from somewhere, probably valve stem seals. This is very rare.
Now, if they're very black and sooty looking, your mixture is too rich or you're letting your engine run with the enricher in the "on" position for too long. The "too rich mixture" will mean either a carb problem or a computer setting if it's fuel injected. The bikes usually come set extremely lean from the factory so someone has either changed the jetting, there's something wrong with either the carb or computer settings.
If you allow the engine to "warm up" too long with the enricher out, it will foul spark plugs. I usually start the engine and let it run with the enricher out just until I can keep it running with the throttle. At that point, I turn the enricher off. I hope this helps. Good Luck
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 ratio could be rich depending on what oil you use,your powervalve could be stuck closed(pop off the plastic cover over the actuator located at the front of the clutch cover,its held in place by 3 screws attached to the barrel,start the bike and give it a big blat on the throttle and see if the lever moves)it could have a blown crank seal(the symptom displayed by this fault is that you will be using gearbox oil),the expansion chamber could be carboned up,or the piston and/or rings could be worn.If all these things check out ok I suggest either raising the clip on the needle(which drops the needle causing the mixture to run slightly leaner) If this does not have enough effect go down one size in the main jet.Adjusting the main jet size will require you initally to very frequently remove the spark plug to check that you haven't gone too lean. The plug should not be wet and oily,the perfect colour is a tan colour and not wet.I must stress that jetting a 2 stroke if you lack experience can be tricky in that if you go too lean you can seize the engine so if you do reduce the size of your main jet frequent initall inspections of the plug is highly recommended.As a final note,if you are using a standard plug and not a racing plug(ie gold paladnium or irridium)thay are inherently more susseptable to fouling & changing to a "racing plug" may help to reduce your plug fouling.Hope this was helpfull