Does this sound off to you?

[natemoen]

If you went up 2 on pilots you would be at 50. I think that would be WAY to rich, especially with stock exhaust!

[Fix]

If you went up 2 on pilots you would be at 50. I think that would be WAY to rich, especially with stock exhaust!

I had that backwards. I'm at 47.5 pilots and 142.5 mains.

[Fix]

Taking the carbs apart again and one thing I did notice is that on the number 4 carb, the part under the float tang is stuck. ie. the other 3 have a spring action where the small pin goes up and down in the silver square part that comes to a point. This one is seized up.

[Fix]

Does anyone have a good link to a bench sync, maybe with a picture? The one's I'm finding with search lead me to believe there's something odd going on with my butterflys.

[bikerphil]

Does anyone have a good link to a bench sync, maybe with a picture? The one's I'm finding with search lead me to believe there's something odd going on with my butterflys.

http://www.xs11.com/xs11-info/tech-t...rburetors.html

[Fix]

Taking the carbs apart again and one thing I did notice is that on the number 4 carb, the part under the float tang is stuck. ie. the other 3 have a spring action where the small pin goes up and down in the silver square part that comes to a point. This one is seized up.

A bit of twisting freed this up. It had a speck of gunk wedged in it.

[Fix]

http://www.xs11.com/xs11-info/tech-t...rburetors.html

Aha, thanks! I knew I had seen it somewhere, but I kept searching for bread tie bench sync and coming up dry. thanks!

[Fix]

I refuse to be defeated...

by this damned machine.

So, I went to harbor freight and got a compression tester, feeler gauges, and a micrometer.

Cold engine compression test, no plugs in, no carbs on:
1: 135 2:150 3:134 4:135

And here's another oddity. These are my brand new 2 day old plugs, from 4 to 1.



Check the valve clearances next?

[Fix]

I found this in my toolbox, hopefully it's the right kind.

[DGXSER]

That looks very much like the valve tool. If it is not the right one, it is a dang good imposter!

I'd say you have some real issues in carb number 3. Either a jet fall out, a plug fell out, or the float is way out or something.

[petejw]

personally id go back to the stock pilot jets
and go no bigger than 2 sizes on the main jets,
sounds like the bikes flooding with the larger pilots,
and theres usually no need to up the pilot jets even with
pod filters fitted, otherwise ull be chasing ur tail trying to
find a problem that isnt there.

[TADracer]

Carbs can be finicy

IMHO you seem to be at a point where you no longer have a baseline to tune from so anything you try is a shot in the dark. If I am correct you have only really done one thing that should affect your jetting and that is a change to pod filters. That change alone should not require such drastic jet changes and in fact might not require one at all in some instances.

I would stop where you are and get back to the base setup with your carbs, ie - stock pilot/main jets, needle centered, idle mixture screws 1.25 turns out, float heights at stock settings, make sure everything is squeeky clean and then go from there.

Once you get it started, check timing and then check idle mixture and adjust if necessary, then sync your carbs and then set your final idle speed, in that order. Try it out and see if your performance is lacking anywhere and adjust from there. At least you will have a good baseline to tune from.

[Fix]

Thanks guys, I agree. I have the carbs partially torn-down and plan to finish tearing them down tonight. I'm putting the jetting back to stock until I can get an idea of what else is going on. I'd put the stock airbox on if I still had it, just to reduce the variables.

As far as the actual carb clean, I've heard good things about boiling them in lemon juice, but I imagine that would require a full rack disassembly, as I can't imagine the fuel "T"s between the carbs would stand up to that. I'm not discounting a full rack disassemble if that is the sure-fire best way to ensure the passages are squeaky clean. The only reason I wouldn't want to break down the rack is that I've heard (or read, don't recall) that some folks had problems with leaking fuel "T"s or something like that.

[James England]

IMHO you seem to be at a point where you no longer have a baseline to tune from so anything you try is a shot in the dark.

Hear hear. I'm wary of doing loads of things all in one go. I've found it's better to do something (eg change to pods), then start up the bike. All OK? Then do the exhaust. Still OK? The do the next thing etc If you do loads of things at once, you just get lost.

I'd forget the valve clearance idea. It won't be that. A valve isn't suddenly going to cause your problems. They run with clearances that are way out anyway. Looking at your plugs, and reading the story so far, I'd say it's carbs. You do not need to split the rackof carbs. If you do, you'll be potentially adding to the list of variables as to why the bike doesn't run properly.

The key to all this is that the bike was working fine until you started work on it. It's something you've done/not done. It's not valve clearances... or compression or anything like that IMO. Your bike was running fine. You did things to it and it's malfunctioned. It's something you've done to it or reassembled incorrectly, so I'd focus on that, not things you've not touched..........

[Fix]

Hear hear. I'm wary of doing loads of things all in one go. I've found it's better to do something (eg change to pods), then start up the bike. All OK? Then do the exhaust. Still OK? The do the next thing etc If you do loads of things at once, you just get lost.

I'd forget the valve clearance idea. It won't be that. A valve isn't suddenly going to cause your problems. They run with clearances that are way out anyway. Looking at your plugs, and reading the story so far, I'd say it's carbs. You do not need to split the rackof carbs. If you do, you'll be potentially adding to the list of variables as to why the bike doesn't run properly.

The key to all this is that the bike was working fine until you started work on it. It's something you've done/not done. It's not valve clearances... or compression or anything like that IMO. Your bike was running fine. You did things to it and it's malfunctioned. It's something you've done to it or reassembled incorrectly, so I'd focus on that, not things you've not touched..........

I don't need to split the carbs to soak them?