Carb Issues

[AngusJustice]

My ATC doesn't idle or run well when the choke is off but if I put it on the first position the bike runs alot better can someone tell me what this means. Its a 1980 honda atc 185 also it looks like its missing a part on the outside of the carb in front of the bowl facing the cylinder there is a hole going up with threads in it but no pin could someone tell me what this is. Thks A.J.

[TeamGeek6]

Generally, too lean on fuel, the choke enrichens the mixture and the engine runs better.

But, NEVER attempt to diagnose an engine without first looking at the spark plug. A fouled plug or weak ignition likes more fuel also-so you can be fooled into thinking its carb when its not.

There shouldnt be parts missing from a carb (they dont put spare parts in them!). Could be a missing bowl screw or a missing idle adjust screw. Can you post a picture?

[AngusJustice]

Its the little gold screw on the front in the center!59407

[james9r9r]

Looks pretty straight

[TeamGeek6]

Thats the idle adjust screw, it must be there. either ask around here for a spare screw, or get the carb number and go to www.sudco.com. I doubt a dealer has parts that old.