1974 ct70

W

WENDELL OLDHAM

New Member
i replaced my points and condenser and my little bike is still sputtering in 3rd gear. slow jet looks clear. i can see the light. any other suggestions. i've ordered another 35 jet to see if that does it
 
6

69ST

Well-Known Member
Classic symptom of a partially clogged emulsion tube. Not saying that it can't be anything else however, it's the most likely issue. Run a thin wire through every one of the wall orifices, followed by carb cleaner and compressed air. Have you checked the air filter element & inlet side airbox boot? Old foam can deteriorate and I'e seen more than one airbox boot that's been collapsed by mis-routed wiring & fuel lines.
 
L

lukelaw1

Active Member
The 35 jet is pilot, which is used for idle, you need to look at the main jet, and as racerx said the emulsion tube, carb slide/needle height, float height, points gap, valve lash.
 
Chrisqa

Chrisqa

New Member
After you find the problem clean the plug. They gas foul easily. I was adjusting the idle mixture on a new 14mm carburetor on a 1981 z50r and fouled the plug. I use a propane tourch to burn off the carbon be careful.
 
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