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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Engine - all topics related to the Motor » Engine - Carburetion & Intake » Archive through June 14, 2009 « Previous Next »

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Donaldj
Posted on Wednesday, June 10, 2009 - 11:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ok, Still wants to die when you give it gas.
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Ezblast
Posted on Wednesday, June 10, 2009 - 01:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Turn it around put it back in.
Do the kick stand wires as well.
EZ
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Donaldj
Posted on Wednesday, June 10, 2009 - 04:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Twisted kickstand wires together & turned fuse around and put back in. Still wants to die when when you give it gas But, will idle just fine.
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Swampy
Posted on Wednesday, June 10, 2009 - 09:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Did you pinch the diaphragm when you put the diaphragm cover back on?(Assuming you took the cover off)
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Ezblast
Posted on Wednesday, June 10, 2009 - 11:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Also check the roll over valve and hose on the tank, that the vacuum vent line on carb is properly plugged, that there is no exhaust leaks, loose plug or wire, and no Cali canister. No loose grounds as well.
EZ
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Donaldj
Posted on Thursday, June 11, 2009 - 04:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Checked the diaphragm, Not pinched. Whats the roll over valve And how can i check it. I only see one ground up front by the head. Vacuum line is plugged,No exhaust leaks,No Cali canister plug and wire are tight. When i emptied the gas tank I could hear something loose in there.
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Ezblast
Posted on Thursday, June 11, 2009 - 06:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Rollover valve on the tank just before the hose that comes out of the tank. so its flooding out?
EZ
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Donaldj
Posted on Thursday, June 11, 2009 - 09:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yes its flooding out. When its idling give it gas and it just bogs down and dies.
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Ezblast
Posted on Friday, June 12, 2009 - 02:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Was it recently dropped or tipped? The BAS or mal adjusted float - fouled or partially fouled plug - happens to XBs all the time from revving their engines with fuel injection, and can happen over time on a carb as well - just a slower process.
EZ
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Donaldj
Posted on Friday, June 12, 2009 - 02:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It was layed over awhile ago. It has only been ridden about 130 miles since it was layed over. What is the BAS or Mal adjusted float, How can I check that!
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Ezblast
Posted on Friday, June 12, 2009 - 10:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The BAS isn't it if the bike was working before - have you done the kick stand disabling yet? All your replies reflect that you haven't, and that could well be it.
EZ
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Donaldj
Posted on Friday, June 12, 2009 - 02:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have disabled the kickstand and flipped the diode. Still same problems.
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Ezblast
Posted on Friday, June 12, 2009 - 03:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'd go over the carb again with a fine tooth comb, the boot and boot application as well. If everything else is guaranteed perfect, then I would suspect ignition, but I would re-check everything else.
EZ
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Donaldj
Posted on Friday, June 12, 2009 - 05:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I will tear everything down and redo,If still nothing what should I check with the ignition.
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Donaldj
Posted on Friday, June 12, 2009 - 05:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What is the BAS?
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Ezblast
Posted on Friday, June 12, 2009 - 06:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Bank Angle Sensor - only a few ever went bad, will shut you down if your bike is leaning past a certain angle, but a very few times it just kept shutting a bike down.
The ignition has been known to randomly shut one down, then allow restart, only one ever got to the point where you would turn on the bike then the ignition would shut it down. Only reason I bring it up is because it is a 2000.
EZ
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Gearheaderiko
Posted on Sunday, June 14, 2009 - 12:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Welcome Donaldj!
Do the pulley recall before its too late (seriously-and ask for the old parts back if possible).

Where there any symptoms before this problem or did you do any work on your bike just before the problem started. Its very important because if this problem started right after you say re jetted (even though you think you did everything right), that would be the place to look. Usually it is safety switches or clogged pilot jet as has been already covered. Got a manual?
For the ignition one of the easiest things to do is pull off the timing/points cover and watch the LED. If its ignition related, the LED will not flash, will flash erratically or may just go out when you give it gas (hence it dying above idle).That will also let you know if the BAS is killing the ignition, but most 2000 models didnt come with a BankAngleSensor. It does concern me that you changed out the auto enrichener. I dont know if it was causing a problem, but avoid the "replace everything" approach. Usually if the AE was bad it would hard start when cold or it would start then slowly foul out the plug.

Sorry to come in this late in the game. If you've already pulled your hair out, my apologies. You have gotten some good advice here already.
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Donaldj
Posted on Sunday, June 14, 2009 - 08:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The bike was layed down about two years ago, After replacing a few part cosmestic parts it was ridden about 130 miles then put up. After sitting for 18 to 20 months a friend said he would get it going. He replaced the battery,Said he cleaned out the carb and gas tank But, could only get it to idle and that it was running very rich and kept fouling out the plug. He did not have much patience and was tired of working on it. I brought the bike back home and decided to fix it myself. After taking the carb off and looking at it I dont beleive anything much was done with it. I currently have the carb soaking in cleaner and hope to have it put back together today, Will post an update when complete. Any other info you have would be great.
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Swampy
Posted on Sunday, June 14, 2009 - 10:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Look for all the parts to be in place, check that the jets are the right size and make sure the slide diaphragm is not torn. Dont soak that as it will swell up to an impossible size. Make sure the needle is seated in the slide properly. Make sure the float level is set correctly.
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Donaldj
Posted on Sunday, June 14, 2009 - 02:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I did pull the ignition cap off and fire it up prior to dismantling the carb And, the led was flashing it did let me rev it a little and then the led would stay solid. This was the first time I was able to even get it above idle. It kinda seems to me to be something clogging the carb. Hopefully the soaking and cleaning will fix. I didn't soak the slide diaphram and it looks to be in good shape.
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Donaldj
Posted on Sunday, June 14, 2009 - 02:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My jets are new the sizes are a 42 & 175
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Gearheaderiko
Posted on Sunday, June 14, 2009 - 02:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

"he cleaned out the carb" Famous last words and 99% of the time a needless task that usually leads to trouble.
My guess is that parts are missing, maladjusted or installed wrong. The slow jet usually gets clogged from sitting. The 'needle jet' (part#3 pt #27100-88 in the parts manual) can fall out and it may be missing or in backwards. Needle may be installed incorrectly.


These things may be wrong, but probably not helpful in finding the cause to your problem:
TPS may be maladjusted, tricking the carb into thinking its at WOT, but I doubt that would cause your problem. 'Choke' may be installed incorrectly, but I doubt that would cause the inability for it to rev above idle.
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Gearheaderiko
Posted on Sunday, June 14, 2009 - 02:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

PS Were there any 'shims' installed with the needle? Whats the part # on the needle (if you pull it out again)?
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Donaldj
Posted on Sunday, June 14, 2009 - 02:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

the needle is "eg n8" no shims.Whats the needle jet and what is the proper way to install.
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Gearheaderiko
Posted on Sunday, June 14, 2009 - 02:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The needle # sounds okay. The 'needle jet' as listed in the parts manual, is the small round piece that the needle slides into at the very end (past the carb opening-the very tip of the needle). Frankly, I checked it out for EZ once (and he was checking for someone else) and maybe he remembers or has it written down. I dont remember, but if I get a chance I'll pull a carb apart (again) and check it (but that wont be till much, much later).
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Donaldj
Posted on Sunday, June 14, 2009 - 02:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

OK, Thanks getting ready to reasemble the carb now. Sure looks alot cleaner now.
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Donaldj
Posted on Sunday, June 14, 2009 - 03:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Got the carb cleaned and put back together. Still wants to flood when you give it gas,Idles great!!!
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Donaldj
Posted on Sunday, June 14, 2009 - 04:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Does the needle jet install in the throat of the carb. I ask because when I give it gas you can see gas spraying up from where the needle goes in at the bottom.
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Gearheaderiko
Posted on Sunday, June 14, 2009 - 05:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yes. See #5 in both carb diagrams above. The lower diagram shows the part. the upper diagram shows the location. It installs from inside the float bowl (after pulling out the main jet and emulsion tube).

Is it possible that someone installed a non (stock) Keihin jet kit and you installed stock jets that weren't compatible?

Is the idle mixture screw turned 2-3 turns out and does it still have the tiny O-ring, spring and washer?
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Donaldj
Posted on Sunday, June 14, 2009 - 06:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

There is nothing else in the main jet area except the jet and the tube So, Surely missing something there. I have turned the idle mixture out 2 2/3 turns But, When i pulled it out to clean it there was only a spring, No washer or o-ring. Would you happen to have the part #'s and names so I could get them ordered.
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