Running rich

[skids]

The red arrow in post 128 is the air jet for the main jet.

I was going to say that but I don't have a carb bank in front of me for the later carbs, so I will shamelessly agree. The main jet is a non removable pressed-in jet. It feeds air bleed to the emulsion tubes along the main jet needles. Those things are easy to plug and affect richness above 3000 rpms. Carb spray will enter the main jet bore if the emulsion tube is removed.

[BLOWCLVL]

I was going to say that but I don't have a carb bank in front of me for the later carbs, so I will shamelessly agree. The main jet is a non removable pressed-in jet. It feeds air bleed to the emulsion tubes along the main jet needles. Those things are easy to plug and affect richness above 3000 rpms. Carb spray will enter the main jet bore if the emulsion tube is removed.

Not sure I'm understanding

[motoman]

The red arrow in post 128 is the air jet for the main jet. The bowl vents are the two top holes in the bell, left & right. I don't know how you can tell the fuel level in the bowls. There is no tubing connected to the bowls. The tubes are from the petcocks. I don't know where the tube on the left of petcock is from???

'Hosing' the carbs with bike idleing(recommended method for 81-XJ) is way easy IF you have the 81yr. or XJ.

[motoman]

The red arrow in post 128 is the air jet for the main jet. The bowl vents are the two top holes in the bell, left & right. I don't know how you can tell the fuel level in the bowls. There is no tubing connected to the bowls. The tubes are from the petcocks. I don't know where the tube on the left of petcock is from???

'Hosing' the carbs with bike idleing (factory recommended method for 81-XJ,3mm down from top of carb body casting) is way easy IF you have the 81yr. or XJ.

[3Phase]

You have the '80 - '81 series carburetors.

The hole you have the arrow pointing to in your picture is for the pressed-in Main air jet, not the float bowl vents. If there is fuel coming out of the Main air jet inlet hole, something is wrong.

To help you get an idea of what you're dealing with, here's a thread with pictures made by TopCat when he sliced and diced some carburetors:-


XS11.com | Forums | Anatomy of the Carbs

[skids]

Not sure I'm understanding

If you remove the emulsion tubes (the main needles pull up from it as the diaphragm lifts) and spray into the main air jet, you should see the carb cleaner enter into bores where the emulsion tubes were located. You unscrew the main jet and push up the emulsion tube to remove it, after the diaphragm and its cylinder slide is removed.

You don't really have to do all of that however...you can spray into the main air jet and it will dribble out of the main fuel jet, proving the main air jet is clear.

[BLOWCLVL]

If you remove the emulsion tubes (the main needles pull up from it as the diaphragm lifts) and spray into the main air jet, you should see the carb cleaner enter into bores where the emulsion tubes were located. You unscrew the main jet and push up the emulsion tube to remove it, after the diaphragm and its cylinder slide is removed.

You don't really have to do all of that however...you can spray into the main air jet and it will dribble out of the main fuel jet, proving the main air jet is clear.

I have done that. It's clear I can feel it.

[DiverRay]

So they are saying the float level is off, as in too high. Go back to my last post and give it a try BEFORE going on another tangent. START WITH THE BASICS! DOES the needle and seat stop the flow of fuel? Is fuel getting in from someplace else?(leaky "O" ring seal, bad casting). AFTER that, go to step 2, float adjustment.

[mack]

My offer

still stands. I'm only 15 minutes from you.

[BLOWCLVL]

still stands. I'm only 15 minutes from you.

I have all intentions of going to see you. If I can get it to run will enough to make it

[mack]

I have

a recovery trailer. Tell me where and when and well bring it to my shop, fix it and you ride home. My cell # is 403-5368 if I don't answer my home phone.

[mack]

Blow

Have you checked the serial number on your motor and checked the number on your TCI and centrifugal advance to see if they are compatible.

[BLOWCLVL]

Have you checked the serial number on your motor and checked the number on your TCI and centrifugal advance to see if they are compatible.

No I have not. I'm busy this weekend but I will for sure get ahold of you.

[BLOWCLVL]

haven't been able to do much last few weeks. Picking up some carbs this weekend and will try that and see if the issue goes away.

[BLOWCLVL]

ok so I installed another set of stock carbs with stock jetting and the bike runs like a dream. Think the old carbs were just worn out. Thank you all for your help.