2001 kx250 spark plug keeps blowing up - 2003 kawasaki KX 250

The threading could be stripped, not enough thread to keep the the spark plug in under pressure.
I heli coil can be installed or thread repair

Hi Cathy,your cat could be partially clogged and causing your internal engine to run hot and causing this,happen to me,but it caused my head gasket to blow,had to take cat off to see,the inside of cat came apart and partially blocked the outlet.I put a new head gasket on and didn't put another cat on,don't have a smog test in my state.If it is not your cat,then it may be your piston rings which will let oil get to your plugs.What are your plugs looking like Cathy?

Yes I think there is a problem in radio or in cigarette plug check if the fuse are the same for both

Blowing out? Does that mean they go faulty or do the physically come out of the head? If they come out of the head you are either using an incorrect plug or the sreww thread in the plug is damaged. Damaged thread can be repaired but the head will need to come off. It entails drilling the plug hole bigger. Then a new thread is cut and a helicoil is screwed into the new thread which will return it to the original size. See link : http://www.fastenernetwork.co.uk/cms/site/images/530px-Helicoil_14x1_25.jpg

have you tryed a new spark plug?

Hello. Get a can of starter fluid and a helper. Have the helper squirt some starter fluid into the air intake area while u start it. then use starter fluid to keep it running until it runs on its own. If this does not do it, you will probably have to rebuild the carburator. Joe

if the bike will not turn over you mean it doesnt crank? because if it doesnt crank over then its a starter issue and could be a simple as a blow fuse, but then why did the fuse blow? ( starter going bad)..... or it could be the starter solenoid itself, and this is where i believe you might find the fuse. response feedback appreciated.

Go for .035.