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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Diagnosing problems: » Archive through December 24, 2008 » My blast has a problem! « Previous Next »

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Alk
Posted on Thursday, July 13, 2006 - 10:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I just bought a 2001 blast. it has 3500 miles on it and is completly stock. Ive enjoyed driving it so far but when i drive 50+ MPH for over 4 miles or so the bike will start losing power and eventually shut off. It always starts right back up, this is a california bike and i have taken off the smog cannister and this seamed to help a bit but didnt solve the problem. What else could this be. Thanks in advance
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Ezblast
Posted on Thursday, July 13, 2006 - 12:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sticking rollover valve on the tank - a test - when it feels like that pop open the tank lid - if everything becomes fine - thats the culprit - it was the usual suspect for what you are experiencing - also check that your vacuum line plug on your carb is tight and air tight, and that your vent line is unobstructed. Replace rollover valve if test is positive - cheap and easy to do.
GT - JBOTDS! EZ

(Message edited by ezblast on July 13, 2006)
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Alk
Posted on Thursday, July 13, 2006 - 12:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have already tried opening the gas tank while driving. It didnt seem to help any. I will have to check the lines on the carb.
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Ezblast
Posted on Thursday, July 13, 2006 - 03:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How the heck did a Cali bike get to Missouri - lol
GT - JBOTDS! EZ
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Buellkat
Posted on Thursday, July 13, 2006 - 03:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Especially when it quits after 50 mph!! LOL

Did you check the carb boot???? Might as well....
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Gearheaderiko
Posted on Thursday, July 13, 2006 - 10:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just to be sure the canister removal was done right:
Line to carb is plugged.
Line to gas tank is open/vented.
PCV line is plugged, but still open somewhere (to airbox or vented).
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Alk
Posted on Monday, July 17, 2006 - 08:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I purchased the bike from a guy who was in the military and was living in CA, he moved to Nebraska and i drove up and got the bike. I got a good deal due to it having this problem with it stalling out. Ive put around 80 miles on it in about 3 days of riding, but it has died/stalled 6 times. I really enjoy this bike, I just want this straightened out for worry free rides.
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Berkshire
Posted on Monday, July 17, 2006 - 10:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My best guess is that there is something limiting the fuel flow into the float bowl - not completely blocking it, just reducing the flow rate a little:

dirty strainer in fuel tank
debris in fuel petcock or hose to carb
fuel hose is "tore up" inside
debris in banjo/elbow fitting at carb
passage between fuel inlet and float valve
float/valve linkage not working right
--> float needs to be adjusted <--
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Gearheaderiko
Posted on Monday, July 17, 2006 - 10:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Berki has a logical diagnostic train of thought. If it was sitting it may carb related. Maybe clogged jets which is really common.

Keep us posted on your progress. Remember to try the easy fixes first.

PS If the canister was full of gas, it may take a little while for the problem to clear up, even though the canister is now disconnected. Usually an overnight sitting and 2-3 miles riding.
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Johnnylunchbox
Posted on Friday, July 21, 2006 - 01:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Could be a vacuum problem with the tank. However, a can of seafoam or techron in the gas probably wouldn't hurt either.
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Alk
Posted on Sunday, July 23, 2006 - 08:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I made sure all the cali stuff was removed right and plugged the carb. Just returned from a 35 mile ride and had zero problems. I hope thats all the problem was and i didnt just have a lucky ride.
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Swampy
Posted on Sunday, July 23, 2006 - 09:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Welcome to the Badweb!
Easy first,
Drain Fuel tank, check flow out hose.
Rejet carb.(Your gonna want to do it anyways)
Check ignition lead, coil to sparkplug.


Now seeing that it is a 2001, with the mileage it has, pull the timing cover and get aquainted with the LED on the ignition module.
When the bike stalls out, check to see if the LED is still flashing. If it doesn't flash while cranking, the ignition module is bad.
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