hey guys, i just posted some pics of my plugs from the vforce in my gallery. the tip of the electrode (i think that is what its called) is white. the rest of the plug is brown to black.would someone take a look at them and tell me if they look ok. thanks again.

 

it looks alright i guess

do you put any additives in your fuel?

 

pics 3,4 do look a little strange

 

no i havent added anything to the fuel

 

Hey Mabell
I have tried everything to read my plugs, and i cant do it---I found the best way to tune was to run up a big hill at wot and try a variety of jets until i could get my best top speed at a given point uphill at wot.
I am presently running a 150 main, stock was a 155----seems odd with my mods that it should run best with a smaller jet, but it does. last time i pulled the plug, the middle electrode was burning about the same as yours, white to tan, but top threaded ring of plug was still black, but bike is running excellent, so i aint touchin the main no more.
Midrange power, like spinning the wheels on a powerslide through a bend is determined by the needle jet settings. I borrowed a micrometer, and after determining that the 150 main jet was best at top end, I started playing with the needle shims, until i got my best midrange. The needle shims seemed to pull all of my mods together because none of them seemed to improve performance until i started playing with the shims.

lastly, i was getting alot of backfiring on decelleration, my stock pilot jet was a 35---i bought a 37 and a 40 and tried them both, my acceleration from a dead stop seemed to suffer with the 40, and when i put the 37 in, acceleration went back to normal and i have no backfiring at decelleration at all.

Hope this info helps--i am very happy with my mods

 

I agree with Bing, they look like they are covered in carbon, which to me indicates your running rich. They don't look overly bad. Is the end of your tail pipe getting black soot around it too? Might have to adjust your carbs a little. Like Ole Man says, if it's running good through the ranges, why touch it? Good Luck.

 

yes, the tailpipe is getting black. it seems to be running good. i have been getting a little backfire out of the tailpipe, so i thought it may be a little rich. but when i saw the white spots on the plug i was a little confused. thanks again

 

you can try new plugs and do some plug chops run at WOT and then put it in neutral and shut it down that should be a more accurate reading go at WOT for about 1/8 to 1/4 of a mile

 

Honestly, looks a little lean to me. I think the white electrode should be a touch more tan colored. And the fact that you mention the backfire out the exhaust also indicates a lean condition.

In my limited experience (and from reading Dynojet troubleshooting info), backfire can be caused by a lean condition, or an exhaust leak.

I like to run just a little rich; gives me peace of mind.

Mark

 

i thought if it backfired out the tailpipe it was rich, and out the carbs meant lean.