Jet in the carb bowl?

[cwdaniel]

While giving my Blaster carb a cleaning to correct some funky running, I found some crud in a very small removable jet in the float bowl. It's very similar to the pilot jet shown in all the online diagrams. The diagrams don't identify this part.

What exactly is it's function?:-/

 

[bagds101]

post a pic of what your talking about???...

 

[bagds101]

oh and there is a jet which is hex shaped and removable in the bowl, and theres a jet if you remove your floats. theyre both removable but i wouldnt know for sure what youre talking about unless i see pics

 

[99LRDblaster]

Main jet is the larger brass colored hex nut in the center on the carb. The pilot jet is down a long and narrow tube next to the main jet. You can't see it unless you look down the tube. There is a white piece that sits into the hole for the pilot jet and lays on top of the main.

 

[cwdaniel]

Didn't really think about it till I put it all back together, so no pic. In the drawing below the red arrow points to the cavity that the jet in question is located in.

Not the pilot jet as I understand this one. Pilot jet is in the carb body near the main jet.

 

[Braaaptor]

If I'm not mistaken, this is your idle air bleed jet. As far as I know, this orfice serves no fuel metering purpose; rather it controls how much air enters the idle (pilot) circuit on the carburetor while the engine is idling. If the jet clogs, your engine will idle rich and will be difficult (if not impossible) to tune properly at idle. Somebody please correct me if I am wrong.

People always seem to overlook these when cleaning out the carburetor. Glad you found and cleaned it, as they seem to plug very easily.

 

[cwdaniel]

Goofy idle (high then low) was one reason I took it apart. Another reason was it occasionally "hitting a wall" in the revs. It would seem to run up to an RPM and go flat until you blipped the throttle few times.

Idle air bleed? I think this jet's feed is submerged in the fuel. :-/
Got lucky to find it when I took a close look with a light in that hole.

If I'm not mistaken, this is your idle air bleed jet. As far as I know, this orfice serves no fuel metering purpose; rather it controls how much air enters the idle (pilot) circuit on the carburetor while the engine is idling. If the jet clogs, your engine will idle rich and will be difficult (if not impossible) to tune properly at idle. Somebody please correct me if I am wrong.

People always seem to overlook these when cleaning out the carburetor. Glad you found and cleaned it, as they seem to plug very easily.