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2005 v-twin fouled plugs

I have a 2005 dyna v-twin with less than 4,000 miles on it. Bought it used last Summer and it seemed to burn oil. this summer I noticed it ran rough and found the plugs to be carboned up. also some oil on the breather tubes that run from the air filter back to the motor. also, some smoke out the exhaust when I first start it. any ideas where to look ?

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Fouling can be serious..... or not ....can just be the enricher on to long or worn/bad piston rings. Burning oil and smoking would also indicate bad rings. Could also just be bad plugs. Make sure you got the right ones in there. For $ 4.00 go get new ones at the dealer. Do a compression test - If its OK (over 90 and both within 5 lbs) .... its not the rings. Make sure you have the right amount of oil, and (believe it or not) a weak battery can cause the problems u describe, so check that out as well.

good luck.....let me know how it goes, OK ?

Posted on Nov 22, 2008


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Hi, Molokaiboy96 and the usual suspects are:
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If you have too much oil in the mixture (such as 12:1), then you will probably end up fouling the plug because it is more difficult to burn that much oil. Don't try to cut corners with the oil though, because it's very important for your dirt bike's engine. 2-stokes need the oil for lubrication on the cylinder walls, so if you don't have enough (or any for that matter) then the cylinder walls will run dry, causing it to overheat and seize the engine very quickly. So it's very important that you put in the right mixture pre-mix to your 2-stroke gas tank.
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6. Faulty ignition coil low output.
For more information about your question and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Spark Plugs Keep Fouling
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2005 Kawasaki KX125 Owner Manual

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Oil fouling out the sparkplug on cylinder #2

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Blue smoke is never a good thing....

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Forget about "miracle" oil additives or pills that claim to stop oil burning. They don't. Better to save your money and put it towards a valve job and new set of rings.

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