Thought Clutch slip...now more carb problems!?

[mitch]

No offence plse

But if you do a little research on this site, you will find all your answers . First off a bike mech dosent nessaraily mean he knows this bike . What kits did he use ?. If he didnt strip the carbs then he wasted his time. Go check out all the tech tips then you will see what i mean .

http://www.xs11.com/forum/showthread.php?s=&threadid=867

http://www.xs11.com/forum/showthread.php?s=&threadid=88

http://www.xs11.com/forum/showthread.php?s=&threadid=75

http://www.xs11.com/forum/showthread.php?s=&threadid=39

just a few carb links i hope this helps
Doug

[davins130]

i dont know what is going on is the problem, thats why i started this thread initially as a clutch problem and it is now a carb problem, so i didnt know what to search for......Ive already read that stuff, he sync'd them , rebuilt the bottom part and cleaned them...could he have the float level off? how do i adjust that/what am i looking for (never done this and wont know what im looking at) thanks

[Dennyz]

There is litteraly almost 0 power when it happens, and it kicks in and out.

This is also a symptom of pickup coil problems. You could be having two cylinders come in and out.

[davins130]

what/where is the pickup coil? can this be tested? is it an inexpensive enough peice to replace as a precaution?

[jeffe]

Davins, I think you said you are in Westerville, Ohio. So am I. By no means am I an expert on a lot of this stuff, but I have learned some things. I have learned the hard way about the pick up coils as an example. I am more than willing to help if I can. I also know what my limits are and won't try something I can't do. Pm me and and let me know if you want whathelpI can give.

[TopCatGr58]

Hey Davins,

Well, hate to tell you this, but that was a piss poor carb cleaning job your friend did! IF he took the bowls off and removed the floats, then that's about the most delicate part to deal with in these things.....the float pin post, the pins get stuck and can break the post off while trying to loosen them.

The main nozzle that the vacuum slide, that thing with the rubber top that is under the top cap, needs to come out. Once you get the top off, you then unscrew the MAIN JET from the bottom and remove it and the underlying washer, and then you push the nozzle up thru the body of the carb.

The pilot jet is in the tower next to the main jet, it is small and just needs a proper fitting screwdriver to get it out. The pilot screws are on the front top of the carb where they fit into the intake boots. I didn't check to see what model/year you have. It's helpful to put it in your signature for future requests so you don't have to repeat it all the time!

Also, the numbers you wrote about the jets don't make much sense.....the main jets are either 110 to 120 for the later models, or 137.5+ for the earlier models. The carb kits your mech friend used could have been K&L and they have been known to have the wrong type of pilot jet....which will also make it run very rich and poorly in the lower rpms!

There is a PLETHORA of information here on this site. GO TO THE MAIN FORUM PAGE(not just the link in the left column), and then scroll down to the tech tips, and READ, READ, READ!!!!

Then, when you have more questions, you will know more about how to make a search with several key words in the discussion forum, and again, you will usually find what you're looking for already answered!

Hopefully Jeffe can get with you and give you some good on hands in person training and get things figured out before summer slips away! Good Luck!
T.C.

[davins130]

the numbers im refering to are the numbers stamped on the jets...btw my model/year is in my sig. Thanks for the help!

[Ljay40]

Hi yeah try your mixture screws the main jets wont kick in till the bike is moving down the road at a pretty good clip
its the pilot circuit that controls your idle, start mixtures screws at about 1 and 1/2 turns out and go from there If still wont idle then theres crap in the lil hole of the bottom of the float bowl the brass tube will goes into
Sounds like you may have to go in there again (carbs) and check that out
theres a lot of good carb mechs that miss that hole in the float bowls
its a regualr problem with this kinda carbs on these kinda bikes
good luck keep me posted
Ljay

[John]

The little hole in the bowl that the brass tube fits into is actually the choke, or starter jet. The pilot circuit supplies the fuel for combustion until about 3-4000 rpms, that is when the main jet circuit comes into play.

[TopCatGr58]

Hey Davins,

I merged your threads, since the clutch thread migrated to your carb problems, and you're still having problems, so it's helpful for "US" trying to help you to see the history of what has been suggested, what has been done, etc.!

Your symptoms are classic for the wrong type of PILOT JETS to have been installed, which can come from Carb Kits with K&L jets. The main jets as has been stated kick in around 3k rpm and above. Did your mechanic save the old parts? If so.. have him clean them and put the OLD PILOT JETS back in. The ones you were talking about, the 12.5 vs. the 10's are probably the MAIN jets.

The float height can also contribute to problems, they should have been set to about 23mm. IF set too low( when upside down), then it could be running even richer, but the pilot jets are most likely the culprit, and NO adjusting of the pilot SCREWS will compensate for them!!

Have you tried to contact JEFFE, to get another person's perspective and eyes/hands on the carbs, someone who is probably a bit more familiar with these carbs vs. your friend?
T.C.

[davins130]

he came back and took the top apart and checked it all out and said everything looked OK. He couldnt think of anything else, although we havent changed the pilots back to original yet (next step i guess) he wants to get another set of plugs since these ones are so foulded and then see what happens, but i really dont want to spend 10 bucks on some plugs if they are just going to go south again...

[skids]

Well then, clean up the pilots and put them back in.

[TopCatGr58]

Originally posted by davins130
He couldnt think of anything else, although we havent changed the pilots back to original yet (next step i guess) he wants to get another set of plugs since these ones are so foulded and then see what happens, but i really dont want to spend 10 bucks on some plugs if they are just going to go south again...

Give that man a cigar! Yep, like Skids said, put the OEM pilot jets back in. Then take some carb cleaner and toothbrush and clean up the fouled plugs and put them back in! Once it's running, then you should be able to burn off any residue on the plugs while running it!
T.C>

[davins130]

I hate carbs

[tommystinson]

Originally posted by davins130
I hate carbs

What does not destroy me, makes me stronger.

Nietzsche

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.

Winston Churchill