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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through May 13, 2012 » 2002 bueel blast wont run « Previous Next »

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Thumpergrl
Posted on Monday, November 07, 2011 - 07:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I recently had to put a new exhaust after 2 breaks at the mounting and i read alot of stuff before deciding on a Jardine Rt1. Was extremely hard to get on right and had a leak 1st time around. After 2nd attempt it seemed tight but the bike was running bad!! No power and would bog down when i throttled. Saw here about re-jetting so I did that, also replaced the das boot which looked fine but wasnt taking any chances. Carb has been completely cleaned and looks fantastic! Now the bike will barely start and it dies when i try to throttle... Something strange i did figure out is there is a short i think in the ignition tho. I have to wiggle it sometime to get it to light up.Please help!! Thanks so much : )

(Message edited by Thumpergrl on November 07, 2011)
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Harleyelf
Posted on Tuesday, November 08, 2011 - 09:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you have to jiggle your key to get current flow, the switch is shot. Unplug it and short across the contacts to test.
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 11:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ok.. but is this gonna have anything to do with why the bike wont throttle?? It starts fine.. just wont idle for long or dies if i gas it???
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Harleyelf
Posted on Wednesday, November 09, 2011 - 11:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Spark, compression, fuel. If you have all three your engine runs. If the spark is erratic due to inadequate current flow through the switch it could prevent running above idle. More likely is a slow jet issue, or maybe the main jet fell out of its mount. Have you tried starting fluid to see if carburetion is the issue? If it dies with ether being squirted into the intake your problem is electrical.
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 11:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I just put those jets in per the advice i saw posted here... ive taken off the carb and checked them twice to make sure they are in properly.. it ran the day i took the carb off to rejet so was thinking it had to be something i changed : ( So i will go try ur suggestion.. spray into carb while running?? and if it dies its electrical??
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Harleyelf
Posted on Wednesday, November 09, 2011 - 12:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yup. The fluid is like a fuel/air mix right out of the can. If your motor ever ran strong and hasn't made any loud banging noises since, your compression is fine. With an explosive mixture flowing through das boot and good compression, all that's left is spark. For the test, unplug your ignition switch and lay a hunk of solder across the terminals. If it runs strong, take the solder out and turn the key on. If that kills it, it is the switch. Also, Judy, I just looked over the Thumper posts and saw a possibility; the wires to the automatic enrichener. Are you positive you did not reverse them?

(Message edited by harleyelf on November 09, 2011)
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 12:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The only wires going to the carb are the ones in the plug.. uhm now im confused lol Im new to this so its possible i missed something but i dont remember any wires...
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 01:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Im going now to work on the bike.. is there a way to get this convo to email to my phone??
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Harleyelf
Posted on Wednesday, November 09, 2011 - 01:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm not sure myself what auto-choke wires he was talking about... not a Blast owner. Lots of carburetor threads in the Thumper section. Is the low speed adjusting screw where it belongs?
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 01:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

there are no adjusting screws that i know of.. just the air screw and its capped off
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Harleyelf
Posted on Wednesday, November 09, 2011 - 03:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thumper forum - Knowledge vault - Engine - Carburetion... has a picture of your carburetor with the float bowl off. There's a screw marked idle mixture screw near das boot. If it has a problem that would explain all your symptoms. You are certain you have adequate fuel flow out of the tank? No fuel filter or petcock screen blockages?

(Message edited by harleyelf on November 09, 2011)
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 04:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I finally got it started and sprayed the starting fluid in and it died!! Also when looking inside the carb and pulling back on the throttle smoke came out??
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Harleyelf
Posted on Wednesday, November 09, 2011 - 05:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What broke around your exhaust? Could your head have cracked? Have you ever checked your timing? How long have you had the bike? Did it ever run with good power?
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 07:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ive had the bike 2 yrs and it ran great until the exhaust broke off..It was running like crap after i put the Jardine on and i drove it to my friends a week ago to re-jet it, it ran ok but didnt have the power it did before. thats why i thought it needed re-jetted, thats what i read in the forum to do.
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Harleyelf
Posted on Wednesday, November 09, 2011 - 07:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The exhaust stud is okay? You are correct in expecting to re-jet after an exhaust change. Is there any vacuum hose fitting on the carburetor that might have lost its hose? You're certain that your plug wire and coil wires are on tight? Got a multi-meter?
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Thumpergrl
Posted on Wednesday, November 09, 2011 - 07:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I checked the coil.. its great. im going to go back tomoro and see if i can find the idle screw.. dont remember seeing it tho lol if all else fails im going to put the old jets back on and start from scratch thanks Jeff
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Ezblast
Posted on Saturday, November 19, 2011 - 02:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Das Boot!
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Harleyelf
Posted on Saturday, November 19, 2011 - 08:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

She said in the first post that she changed it, you think there's a hunk of crud in there causing a bad seal? The fact that it runs great now with a restriction plate makes me think that may be the case. Judy, try it again and make sure all the mating surfaces really mate up. There's no issue with your spark or compression if it ever runs great; that leaves fuel mix. If the carburetor makes a good mix and it can't get to the motor through das boot, you will get the symptoms you have got.
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