where are the idle jets?

[DJFJ]

My 1992 FJ1200 runs fine except at idle where it wants to die.  I found here that the idle jets are tiny and get clogged and so I ripped the carbs out and cleaned up everything.  Put them back in and it's the same.  I'm not sure which ones I cleaned beside the pilots and the mains, anyone have a picture of the idle jet location? 

Also, somehow I forgot which hoses ran from the fuel tank to the carbs.  I connected a line from the tank to some kind of emmisions device or filter, then a 2nd line from there to the carbs.  The two black rubber hoses coming from the white tube below the carbs I thought were vent lines, but, when I hooked it all up back together, gas was leaking out of somewhere on the right side.  I may just not have tightened a float bowl drain screw, but, fear I might have the lines mixed up  . My manual does not have any great shots of the lines running from the tank and how they get to the carb.  Any help or pics appreciated.  I gotta get this baby back on the road!!!!

Thanks -Dave

[Bminder]

Others much smarter than me will chime in soon, but I've cleaned my idle/pilot jets about 6 times this summer, so i got real familiar with the procedure.
On the home page here, go down about halfway and click on the carb files and look through some of those docs, and you'll find what you need.

Pull the carbs, drain the float bowls, flip the carbs upside down, take off the float bowls, and the idle/pilot jets are down the hole next to the main jets.
They are small and easy to drop.  There's no o rings or washers under them.
Hold them up to the light and look through the threaded end and if they are clean you will see a tiny, tiny, tiny round hole in the end. The hole in the end of these jets is about the size of the dot on the i here... so tiny.
Randy said to get some good carb cleaner that has the chemical toulene in it. I found Berrymans B-12 chem tool has it.  Spray from the pointed end towards the threaded end. use compressed air and spray from the pointed end to the threaded end. Soak them in the Berrymans (or whatever you find.) use compressed air some more.
But hold on tight to those buggers, because when you use the compressed air on them, they can shoot out of your fingers and dissapear into the dark recesses of your garage. Not that I know anything about that.
You have to hold them up to the light at just the right angle and distance from your eye to see the hole in the end.
When you screw them back in, snug them down good, but don't crank too hard and strip them.

The gas line on your bike should connect to the T fitting inbetween the #2 and #3 carbs. The other hoses just hang down to vent. They aren't connected to anything.

[movenon]

A note. Pay some attention to the vent hoses as to not kink or squeeze them shut when rerouting them. From your petcock the 8mm fuel line go's to a plastic fuel filter mounted to the bottom of your fuel tank then to the fuel pump then to the "T" fitting into the carbs.
Hope it's some help.
George

[markmartin]

I've had some luck using steel guitar strings to clean dirt bike carb orifices.  The high e strings provide a wire diameter of .008 - .012 depending on the type/weight, and make for a good reamer.    

[Bminder]

I've had some luck using steel guitar strings to clean dirt bike carb orifices.  The high e strings provide a wire diameter of .008 - .012 depending on the type/weight, and make for a good reamer.    

I think the holes in these jets are smaller than that... much smaller.

[FJmonkey]

A note. Pay some attention to the vent hoses as to not kink or squeeze them shut when rerouting them. From your petcock the 8mm 6mm for fuel pump, 10mm for gravity feed fuel line go's to a plastic fuel filter mounted to the bottom of your fuel tank then to the fuel pump then to the "T" fitting into the carbs.
Hope it's some help.
George

Clarification to avoid any misinformation.

[Pat Conlon]

Just a further point of clarification...
Billy talked about the pilot jets, however there is also the air idle jets which can affect idle.
They are located on the top of the carb body in front of the slides. On the USA bikes there are plugs that you have to remove to access the air screws. Their purpose is to meter the amount of air into the carb's fuel/air mixture for proper idling.
If this circuit is dirty or clogged, your idle quality will suffer. If the o ring that seals around the needles is torn, letting in unmetered air, this can also affect your quality of idle.

[movenon]

A note. Pay some attention to the vent hoses as to not kink or squeeze them shut when rerouting them. From your petcock the 8mm 6mm for fuel pump, 10mm for gravity feed fuel line go's to a plastic fuel filter mounted to the bottom of your fuel tank then to the fuel pump then to the "T" fitting into the carbs.
Hope it's some help.
George

Clarification to avoid any misinformation.

OOPs sorry about that.. Another project another day...     6mm is correct for your 92...  Thanks Mark .
George

[Bminder]

Just a further point of clarification...
Billy talked about the pilot jets, however there is also the air idle jets which can affect idle.

Aren't they called idle air mixture screws, not jets?

[Pat Conlon]

Good point Billy, I believe they are commonly called air idle mixture screws, but like the pilot jets, they do affect the air/fuel mixture at idle.

[RichBaker]

I've had some luck using steel guitar strings to clean dirt bike carb orifices.  The high e strings provide a wire diameter of .008 - .012 depending on the type/weight, and make for a good reamer.    

You should NEVER use anything harder than the brass jets to clean them, otherwise the hole will be damaged, or enlarged.... Neither of which is good for the jet. Any damage will reduce the flow thru them, which will lean the mix....

[andyb]

A regular piece of stranded copper wire can be cut open and you can use a single strand of wire to poke through them if you really want.

[DJFJ]

Cheers guys, I'll tear into it this wknd!