What Could Be Burning The Plug ?? Atc 70

[junjun01]

It Was Running One Day At Idle The Shutt Off.,Check The Plug, It Was Black, Try To Clean It But Dind't Work;Got New Plug Bike Started Right Away...Ran Idle For Couple Minutes Then Shutt Off Againg !; Check The Plug And Its All Black Again ..It Looks Like Is Burn...What Can Be Causing This ??.............Any Takers ?

[junjun01]

The Plug Smells Like Gas Too !...I Try To Clean Then But That Don't Do It...Its Like They Burn.....Please Help....More Snow Is On The Way Tonite !

[JMiller]

piston rings worn, :shock:

[junjun01]

Could That Burn A Plug??.....I Mean,Its Possible For The Plug To Burn ?
I Does have Normal Comprssion...& No Engine Noises Or Smokes :?

[jakey]

sounds like timing is off, piston is not compressed when chamber combusts?

[42F67N]

Black plug could be jetting id look at the carb first.

[TimSr]

If you start a bike up cold, let it idle for a couple of minutes, and check the plug, in most cases it will normally be black and wet, 2 stroke or 4. They all run super rich while they are cold, and you cannot take any valid plug readings that way. All readings must be talken AFTER you reach full operating temp. Then you need a top end reading to setup the main, a half throttle reading to setup the needle/clip, and you setup the pilot air screw for best throttle response off of a stable idle, and its needs to be done in that order.

[junjun01]

I'll Try All This But First I Must Get Another Plug; Like I Say Now I Have 3 NEW Dead Plugs...Only Works For About 5 Minutes,Then....Next Plug Please ! :evil:

[250-TRXROX]

trailprotrailpro atc 70 is either off her timing or she is flooding her head wit to much gas.

[junjun01]

How Do i Stop All That Gas From Going In ?...I think U right In The money
It Was Idling Bad & Leaking Form Over Filled Hose

[hondaATCman]

I don't think its the timing because a little 70 probably wouldn't idle if the timing was off. I think you're float is getting stuck open since the plug is black and gas is coming out the vent tube. If you're gonna open up the carb, go ahead and get a carb rebuild kit. Hope this helps

[250-TRXROX]

yeah like i said befoer its most likely the carb or timing. Heres a old trick me and by friens use and its werks like a charmer. take trailprotrailpro carb off trailprotrailpro bike and take it apart, then boil it in vinegar. The vinegar will take all the dirt off the whole carb. This may sound stupid to u butit werks. o yeah do this outside on a camp stove or sumting and a old pot cuz it will make trailprotrailpro house smell. (learned from experience) then jus dry it with a hair dryer and put back on the bike, if it dont werk its either off timin or trailprotrailpro nedle and seat r gone, which also causes plugs to turn black.