[Jiggly]

So I just picked up a 1967 CL160 and she ran okay through the gears than flooded out during the test drive so I bought it anyway.

Anyways now she is idling but will let me give her any throttle. when I do she is gulping for air through the carbs hard and I tried lean, rich and everywhere in the middle.

Little confused never ran across this before.

gas tank clean getting good gas to the carbs, carbs are clean...

 

[Veefer97]

If you let the bike sit will the bike run good for a little time? if true, check and see if you are getting fuel to the bowls. Remove drain screw and turn on gas. How good is the flow. If bad then there could be a filter on the petcock or one under the float needle seat. My 1974 CB750 had both.

 

[hybrid]

Jiggly...........are you sure you have the pilot jets clean?

Im doubting they are.

Pull the choke and see what it does

 

[Jiggly]

Idles, choke is stalling it, good gas flow to the bowls

not sure about the pilot jets.

Still learning this fandangled carb stuff

 

[hybrid]

So your saying with the choke partially pulled you cannot make the engine take more than idle?

I have a super hard time believing its that rich that it wants to die as soon as you crack the throttle.

The ONLY time Ive seen that is when I worked on an INDIAN and the main jet was sitting in the bottom of the float bowl.

Funny thing was.........it was right out of the crate and it supposedly had 32 miles on it from the factory. But mysteriously it dropped the mainjet in its crate?

 

[Jiggly]

It wont idle with a choke, maybe the drive in the back of the truck fucked up the jets hmmmm I wish I knew what a jet looked like! Never opened more than the bowl on a carb ever

 

[hybrid]

I didnt ask if it would idle with a choke........I asked if it would accept throttle with the choke.

Main jet is the largest diameter jet and lowest jet in position when looking at it in its proper prospective. The pilot is the small jet that is usually in its own tunnel it sits highest in the bowl.


Just take the bowl off and hold the carb upright like its mounted on the bike. The brass tube you see is the emulsion tube and main jet. Then flip it up and look at it and in one of the cast tubes.........youll see the pilot jet (very small flat blade screw driver takes it out)

Air fuel mixture screws need to be turned all the way in (lightly) and then backed out 2 turns to start playing around.

 

[Jiggly]

sweet Ill check it out and no throttle with choke either

 

[RugbyCanada]

I didnt ask if it would idle with a choke........I asked if it would accept throttle with the choke.

Main jet is the largest diameter jet and lowest jet in position when looking at it in its proper prospective. The pilot is the small jet that is usually in its own tunnel it sits highest in the bowl.


Just take the bowl off and hold the carb upright like its mounted on the bike. The brass tube you see is the emulsion tube and main jet. Then flip it up and look at it and in one of the cast tubes.........youll see the pilot jet (very small flat blade screw driver takes it out)

Air fuel mixture screws need to be turned all the way in (lightly) and then backed out 2 turns to start playing around.

I asked my neighbour, and he said the same thing. BUT, he said to see if that year has a fuel filter right below the tank, or right before the carbs--whichever it is, take it off, and try to blow thru it--if rust from the tank comes out, get a new filter. You can only blow, not suck, so make sure you blow in the same direction that the fuel would normally be fed by gravity. {Newfie mechanic trick, but it works}.
I am a bit confused about the choke--does the bike stall when the choke is on full, or when you close the choke off? I cant remember the system from my old RZ, but it ended up being a rusted tank {inside, that is} that caused all the problems.
Good luck.
edit: with my RZ, bike idled fine with the choke on full, then stalled when I gave it gas AFTER it warmed up. Turned out that the fuel filter would suck gas at a certain rate when idling at 1,800 rpm, then would stall with the choke off, or if the RPM went over 2,500/ 3,000 rpm.