Top Speed 60mph?

[fredintoon]

I let my bike warm up and sure enough after spraying water on the pikes, 1 and 3 let the water stay and just run down 2 and 4 evaporated instantly.
question now is, what does this mean. I thought it would be on one side only? Thanks

If you took the plug caps off, didja put them back right?
That you got a good shock from the wires but #1 & #3 don't fire could mean the wires on
those two cylinders are swapped over and those good fat sparks are happening 180º out.
Try swapping the #1 & the #3 plug wires.

[srwalters]

Needle valve issue

I took off the carb bowls and the needle valve was stuck on 1 and 3. DUH!!!
Anyway I started up the bike and it ran and sounded great except for all the smoke from the cylenders that have been running withour fuel.
But after 30 sec's of running, I noticed fuel pouring out of carb 1. So it looks like I need to adjust the tab on the fload one or two more times and if all goes well, my next poste will be the words of excitement and joy.

Thants to all that have been helping with this issue
Swalters

[dbeardslee]

SW - Sometimes a sharp rap with the back of a screwdriver or a small rubber mallet will unstick stuck floats. I'd try that first. Does sound like they could use a cleaning, though.

[srwalters]

Running on all 4

Well I read back through the Manual and decided to tear down the carbs again. I went step by step and used 137.5 jets on 1 and 4 and ordered and put 142.5 on 2and 3. I re-adjusted the the floats and ran a test to make sure no carbs were leaking.
I fired it up and it sounded much differend, you could it was running on all 4.
I went around the yard and it ran great. I went down the road and with a little hesatation on the start off, but then shot off like a rocket. I will test it and fine tune it more tomorrow after I run around on the back roads to learn to ride again. From 45 Hp to 95Hp is like a new bike.

[dbeardslee]

Can we assume from the proposed jetting that the 'sf' part of xs11sg/sf is a set of 78/79 carbs? The 80/81's came with different jets on 1 & 4 and 2 & 3. The 78/79's were all jetted the same. Even on the 80/81's a lot of members have jetted them the same all the way across. I think the reason they were jetted differently on the 80/81's had something to do with stricter emission controls, so I'm not sure it buys you much unless you're trying to be green. Making them run a little richer in the middle might make those cylinders run a little cooler, but I'm not sure you'd notice it. Just some stuff to think about.

[srwalters]

It always seemed like it was running to lean. I had 137.5 all the way across and at 70mph it would cut out, but I am guessing that it because the cabs wern't set correctly. I read it in the back of the manual and thought I might just do that, I had tried everything elso to get it to run correctly. It looks like some careful eyeing of the floats and taking my time to do it correctly payed off. The motor and Carbs are 79's and the rest of the bike ia 80sg. I figure this out after getting several parts that didn't fit. I will have the bike one year in July and this is the first time I will get to ride it with it running correctly. More results to follow tomorrow. Thanks to all that helped.

[srwalters]

The bike runs pretty good but still needs some fine tuning of the butterflies. Man it will get up and go. At 70 mph you crank on the throttle GO!!!

[lee_dutcher]

got to love muscle bikes...cant wait to get my bike tuned right

[dbeardslee]

SR - What kind of mods do you have - specifically what kind of intake and exhaust are you running? When you say you've still got some fine tuning of the butterflies I assume you mean it needs synched. There are two tools I find indispensable when working on carbs - a colortune plug and a synch gauge. The colortune plug will tell you pretty quick if you've got your carbs jetted correctly, and makes for quick, easy, accurate adjustment to your mixtures. Anytime you make adjustments to your carbs it's going to affect the synch, so a good synch device is one of those must have items if you want it to run right. If you don't have these two tools, heres something you might consider. Also, when it comes to carb tuning here's some very useful info.

[srwalters]

Thanks I had been cooling for the color tuner. I have a pretty nice Carb sync tool that I borrowed from my brother, so I am close, but the color tuner will make it much easier. I have 4 into 1 exhaust and individual pods on the carbs. I believe I am running to rich because I hear popping through carbs (Back fire)
I had made the mistake of trying to running it around the house in the grass, The rear wanted to out the front end and I dumped it 10 feet into the yard. No damage unless you count the grass.
I will get the color tuner and should be right on. Thanks

[bikerphil]

Popping thru carbs usually means too lean. Check your plug color.

[Barbarosa]

had similar problem once. you might check your fuel line for a kink or bend and have an easy fix.

[dbeardslee]

SR - with a 4/1, pods, and 78/79 carbs you have basically the same setup I do. Your valves are a little bigger, but my cams have more lift and duration, so again it's about the same. I'm jetted with 145 mains and 45 pilots and that works pretty good. I could probably stand to go a size fatter on the mains, but the 145's look good through the colortune. The first thing I would do if I were you is jet them the same on all 4. If your jetting isn't right you'll wind up chasing your tail trying to tune it. Wouldn't worry about the popping - most of them seem to do that. Fatten up your jets and it will reduce it.

[srwalters]

100% better

Well I took dbeardslee's advice and put 145 mains 45 pilots jets. I went to start the bike and no popping, no rought take off, it is like a new bike. I was shocked and excited at the same time. I ran and got my gear ang took off. First I went around the neighborhood then went down to the next town and after two hours came back to the house still amazed at how well the bike runs. I want to thank all that helped.

[XJOK2PLAY]

Way ta go!!!

Congrats, SRWalters! That's cool! Always brings a smile to hear another success story!!!
Now.... be careful and ride safe on your "new" bike!!!! lol
Regards,
Bob