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Unclediezel
11-11-2005, 06:38 PM
Help- ?

The last few days my yt125 has been running like garbage- lean surge , racing away -then wont idle at all, screams away and settles back to normal after 1/4 turn of the air screw. It ran out of fuel about a week ago- Drained the carb - cleaned the jets and pilot - put it back together and popped the spark plug out , just for the hell of it- Nice mild tan color - but the gap was almost closed! It wasnt like that when I put it in?? Regapped it and put it back in and It ran like it was Brand new- whacked it and it almost left me behind.Ran it most of today , stopped for dinner and it wont idle again- plug is closed again--What Gives?????
Somekindofjerk
11-11-2005, 06:48 PM
plug might be too long hitting the top of your piston, try buying one that is made for the model....
Unclediezel
11-11-2005, 07:03 PM
Wouldnt that make a hell of a noise? and damage a piston top?
freewheel3
11-11-2005, 07:37 PM
Wouldnt that make a hell of a noise? and damage a piston top?
Not if it is just touching it enough to close it a few thousandths. Like was already said, get the correct plug for it or you might end up having some major problems.
Vealmonkey
11-11-2005, 10:44 PM
If you have the correct plug, sometimes when the crank bearings start to go bad it will do the same thing, be careful.
Unclediezel
11-11-2005, 11:18 PM
I thought about that-- Shouldnt the motor Knock intermittently ????
Somekindofjerk
11-11-2005, 11:22 PM
not really, the plug size difference ist that much...
Unclediezel
11-11-2005, 11:35 PM
Ok - Who is ready for The " Screw-up" of the century??
In my hand is the spark plug I took out of the motor-- Champion N9YC
In the other Is a brand new Plug- Champion N9YC-
Guess what---Mine is almost an 1/8 inch longer!!!!!!!!!!!!And theyre both marked with the same Part # !!!!!!!!!!!!!!!!!!
OOOOOOOOOOOOOOOps!!!!!!!!
Unclediezel
11-11-2005, 11:37 PM
Thanx guys----Once again-I couldnt have done it without ya--This site ROCKS!!!!!!!!!!!
Somekindofjerk
11-12-2005, 01:21 AM
Thats champion for you, I like the ngk's, clearly marked and they preform soo much better!:cool:
IrvSLedman
11-12-2005, 01:53 AM
Idk swage, Depends on what your running them in, In the old indy the NGKS deff. make the Difference but, in my trike i did have a NGK in the 200s, then i bought a champion power sport. Like i run in my 200. i think both me and russell will agree. the power sport is one helluva plug:twisted:


Ryan
IrvSLedman
11-12-2005, 01:54 AM
I think it make be a 2 stroke thing though. lol
Lots_Of_Nothing
11-12-2005, 01:58 AM
yep, thats what you get for buying champion plugs. Half-ass quality that works halfass-edly for about 15 minutes then fouls.
phreakboy
11-12-2005, 09:01 AM
yep, thats what you get for buying champion plugs. Half-ass quality that works halfass-edly for about 15 minutes then fouls.

Definetly a true statement, I usually run Ngks but ocasionally my parts store runs out and only had champions. The three times I put a champion plug in my 200s it will foul the plug with an hour tops of ride time, but I put my Ngks in there and I have no problems for quite a while, and as crappy as it is the champion plugs cost a freakin dollar more then the Ngks.
traxxasx
11-13-2005, 06:38 PM
I'd had this champion almost a year and it was in the trike when i got it, so its been in there for while and yet has to faul on me, there not bad at all. Just not to top quality, but pretty good. (haters). Glad * fixed the problem "unclediezel".
cragster
11-13-2005, 06:57 PM
my 200s i had did this. I never thought to change plugs. Oh well...sold that POS
Unclediezel
11-13-2005, 07:52 PM
Ive been a mechanic for almost 20 years---and I ve seen too many con-rod bearings go bad and trash plugs-(And more than a few valves) --but they all had one common point---THEY ALL KNOCKED!!!!!!!!!!!!!! This is a new one for me -and when my hands stop shaking- (For fear of engine damage) I'll put my new plug in and see what happens- I hunted all over town for an NGK BP6ES-Because thats whats in the owners manual -and If Yamaha says so--It must be true**********LOL----
IrvSLedman
11-13-2005, 08:21 PM
If your 200s is fouling plugs that fast, it isnt the plugs, its your trike, My 200s never fouled a single plug, and my 200 never has either. unless your like tring to run like, used chainsaw plugs. lmao



Ryan
RedRider_AK
11-13-2005, 08:29 PM
If your 200s is fouling plugs that fast, it isnt the plugs, its your trike, My 200s never fouled a single plug, and my 200 never has either. unless your like tring to run like, used chainsaw plugs. lmao
Maybe thats why my Puma is fouling plugs that fast...:lol:
Somekindofjerk
11-13-2005, 08:35 PM
Im surprised it even runs!!! thread height difference... 1/4'' chainsaw plug... 3/4'' sled plug... LMAO!!!!!
IrvSLedman
11-13-2005, 09:06 PM
HAHAHAHA oh man, thats great. Well you might want to change that..
phreakboy
11-14-2005, 08:15 AM
If your 200s is fouling plugs that fast, it isnt the plugs, its your trike, My 200s never fouled a single plug, and my 200 never has either. unless your like tring to run like, used chainsaw plugs. lmao
Ryan

I am assuming this was towards me, the thing is there is absolutly nothing wrong with my 200s, It runs great full of power and doesnt use any oil, but as soon as the crappy champion plugs touch it they are just shear junk, NGKs are the best :w00t:
Champions =:cry: :rolleyes: