tylerelias
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- Jun 10, 2007
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can anyone tell me what to do. its my first dritbike and i have no clue where to start.
1980 yz 80 won't stay running
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tylerelias
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- Jun 10, 2007
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- #3
what is the float? it will start fine and everything but then i will like take it for a little rip and i'll come to a stop and it'll just die.
You take it for a little rip and it dies when you come to a stop? As in the bike doesn't idle? Does it start right up after it stops?
The float maintains the fuel level in the carburetor. If for some reason it's not opening all of the way (stuck or out of adjustment), the fuel level could drop slowly as you ride the bike and the bike may eventually die (run out of gas). The bike would be a little hard to start for a while after it died, until the bowl filled again.
The float maintains the fuel level in the carburetor. If for some reason it's not opening all of the way (stuck or out of adjustment), the fuel level could drop slowly as you ride the bike and the bike may eventually die (run out of gas). The bike would be a little hard to start for a while after it died, until the bowl filled again.
tylerelias
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- #6
yea it will start right up again. and how do i tell if its fouling a plug?
tylerelias
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- #8
if i keep revving it, it will stay running.
tylerelias
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- #11
well i took off the carb and opened er up and it looks clean. and the float isn't stuck or anything. so i'll put it back on and i'm gettin a new plug and air filter as well so i guess we'll see how it goes.
tylerelias
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- #13
alright well what should i clean it with?
tylerelias
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- #15
i never knew there was such a thing lol.
From what I gather, everything is working normally. You're just not used to the short idle period of a 2-stroke. You can adjust some things on the carburetor to make the bike idle for longer, but the best throttle respons and best resistance to fouling plugs is with the carb set to idle for only a second or two after you let off the gas.
tylerelias
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- #17
well i got it goin and it will idle. but it will idle sky high. whats the problem?
If the black choke knob is adjustable, use that to bring it down (clockwise). Otherwise, there will be a screw near the center of the carb on the side (counter clockwise). That could be it. You might need to make some adjustments on the pilot screw to restore the throttle response, near the seperation of the float bowl/carb main body on the airbox side. 1 1/2 turns is a good start, if you can't get it right with plus or minus a turn, you'll have to change the pilot jet. For the pilot screw, counterclockwise is leaner, clockwise is richer. I don't know exactly what carb is on the bike, so things may be different, but this covers most carbs on 2-strokes.
If nothing you do controls the idle or the bike is slow to return to idle after a rev, the pilot jet may be too lean or there is an air leak.
If nothing you do controls the idle or the bike is slow to return to idle after a rev, the pilot jet may be too lean or there is an air leak.
tylerelias
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- #19
k well now all of a sudden it won't start anymore? whats up with that?
tylerelias
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- #21
yea thats how i start it.
what kind of spark plug should i use for my bike? its an 81, i just figured that out when i went to get a new air filter and the 81 needs a cylinder type.
what kind of spark plug should i use for my bike? its an 81, i just figured that out when i went to get a new air filter and the 81 needs a cylinder type.
tylerelias
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- Jun 10, 2007
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- #23
and what are the reeds.
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