spark plug keeps going out

[shredex]

this is the second time in less than a month that Iv have to replace the spark plug in my first head.
what could cause a premature spark plug death?

[mike94fzr600]

what does the end of the plug look like

[shredex]

what does the end of the plug look like

black. and it smells like fuel.

[mike94fzr600]

so maby its rinnin rich. if iot gets to wet with gas it would make the plug go bad

[shredex]

well, I know im running rich because I just cleaned out my exhaust and when I checked it a few days later, it was black.

[mike94fzr600]

so than you know why your plugs are going bad. you are runnuin to rich

[mike94fzr600]

1 more thing how are your wires may be you have a bad set of plug wires

[shredex]

actually, my third wire was splt open from the fan blades but I used electrical tape on it and its do well.

[shredex]

my bike seems to have all its power at high rpm's....does this mean im to lean??

[manveru]

if your soaking your plugs and your exhaust is black, your not lean.

[YAM93]

there are "8" and "9" type plugs, i forget which one is "hotter". That can help or hurt with performance. Find out what you're using and try using the other type. (or check to be sure all 4 of yours are the same)
do a search or look it up, hopefully it's in the FAQ, Wiki, or, i'm quite sure it's in the Clymer or Haynes manual.

sorry i can't remember the specifics.

[sweekster]

Do you have a Clymer or Haynes Manual yet? Those help out a lot. Of course you should get that plug wire addressed. If it's just the rubber sheeting around the wires you should be able to cover that up with electrical tape and heat shrink. Well it should be replaced but in the mean time that will help. The NGK CR8E is the plug to use if you're running rich BUT you may want to go back into the carbs and adjust your needle settings and what not.

[shredex]

im using NGK CR9E spark plugs

[FinaLd8ta]

i think ur running a colder plug swap out wit a cr8e witch is a hotter plug

also whats the spark gap for the plugs does any one kno ??