Assembling carbs

I only see three holes in that Barrel which is tough to see anyway one at each end very close to where the threads end for the bolts, and a hole in the middle. And if we don't use the tool at all basically all you're trying to do is make sure that the pressure on the vacuum gauges are all reading 20 or 21.

Got it!

 

My bolts came off with that familiar short crack, then uncrewd fine. I cleaned it with my gun cleaning kit, which is perfect for this job. Hoppes, a smell that brings back many warm memories of my Dad teaching me how to take care of my 16Gauge. We never bagged much but a few ducks, but he loved me enough to know, there is value teaching a man to fish and hunt, and I guess for us here, to Tune an engine!

 

I get no smoke from exhaust, and am happy for that, and with only 9600 miles, this bike just needs an owner that gives a hoot.

 

I think I'll bag the odd tool I bought and store in my extras box. I can't wait to crank it up, and sync it....I am assembling the mini gas supply tank...just need to finish the mini tank prep...

 

Money well spent. How are you planning to vent the new tank?

 

I keep refilling a 100ml syringe, without its top, connected to gas line. I got it idling at 1100 with choke off, but I was in over my head trying to sync it with a 4 bottle manometer. I couldnt remember how many turns I made, in or out,quarter, half... I am simplifying now, reduced my bottles to 2, and will do 2 at a time tomorrow, sync 2-3 first,then 1-2,then 3-4

 

nope
do 1/2, then 3/4, then 2/3

 

+1

Though since 3 is the master you can do 2 to 3, then 1 to 2 and 4 to 3, if the bench synch has 3 in the right baseline state.

 

i think if you do 2/3 first it gets messed up when you do 1/2, don't confuse me i can't walk and chew gum

 

SOS. Send help! FML! So i've taken these damn carbs off 3-4 times since I last checked in. To recap, when I fire it up after the bike warms up a little bit the RPM goes straight to 4500-5000. I replaced the intake gaskets as I thought those were suspect. I checked the float levels and had to adjust 2 a little. put them back on, and straight back up. I turned the pilot mixture screws all the way in just to see, still revved up. I backed the idle adjsutment screw all the way off, still revved up. I've replaced damn near every part on these carbs. I pulled the plugs and they were pretty damn black. This last winter i tore the engine apart and replaced the head gasket and got the valves in spec. WTF do I do here, I don't know what else to check. What else can make it do this. Does anybody know of somebody who may have a good set of carbs that I could borrow to bolt on and rule out the carbs? I need to find some way to rule something out, either the carbs, or the gaskets/air system/the engine.

Any suggestions?

 

Your synch is most likely off , did you do a full tear down breaking the rack ? A full soak with all rubber seals out is only way to do a proper job. I suggest you do bench synch which gets you close 2 business cards cut in two ,put one under each butterfly plate , adjust the synch screw till you get a slight drag on the card as you pull it out . Please note there are 3 synch screws and the idle knob is the other ,turn it in till.it pushes open the butterfly plates slightly. Hold carbs up to the light you should see a slight bit of light . Good luck.

 

Make absolutely sure that the air jets are in the correct locations (you can check them without removing the carbs), and that the cables are hooked up right.

Everyone will, at some point, hook the choke up to the throttle linkage. The result is an inexplicable high idle.

 

when it revs high do you turn the choke lever off? does it respond to that?
got no response earlier cables hooked up correctly? throttle installs in the holder with cup carb 3, choke to outer holder with clamp carb 4 .

 

lever is off when the revs go high. cables are hooked up correctly with holders in right spot. i even took throttle cable off and had it completely loose just to see if that somehow affected it and it did not.

 

so in the interest of putting as much info out there as possible to help people in the future, I wanted to update the thread. I fixed my issue. it was the new aftermarket throttle shaft seals that were BO. In the back of my head i remembered that they were a little looser than I thought they should be. after trying a billion things i just pulled the carbs apart...again.... and changed them with OEM ones. worked like a charm, fired up and ran good. vac sync'd the carbs, color tuned, and good to go! i ran it up the street a bit but it doens't currently have insurance so I haven't taken it for a good ride yet. pretty happy with it. Moral of the story, i wouldn't say DON'T go aftermarket instead of OEM, but be aware of what aftermarket parts you used for future troubleshooting haha.

 

Glad you got it sorted and Thanks for the update. I was about to put aftermarket seals in mine ,but then questioned the material and thought OEM lasted 38 years. So I switched to OEM. Glad I did after reading this.