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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Diagnosing problems: » Blast wont start » Blast lost power on interstate hasn't started since « Previous Next »

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Videoninja
Posted on Monday, June 28, 2010 - 07:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Was running my '01 blast about 70 and it lost power, and won't start now. Took it to the dealership for diags and was told the Ignition Coil was bad. I replaced the coil and still wont fire. My next step is to replace the plug wire. I have strong compression and getting fuel. Any ideas???
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Buellistic
Posted on Monday, June 28, 2010 - 07:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

DOES THE LED LITE ON YOUR IGNITION MODULE GO ON AND OFF WHEN TRYING TO START ENGINE ???
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Videoninja
Posted on Monday, June 28, 2010 - 07:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It does
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Crackhead
Posted on Monday, June 28, 2010 - 08:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

check for spark, you can ground the plug to the side of the head or get a spark tester for a Briggs and straton.

After that, the only thing left is fuel.
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Videoninja
Posted on Monday, June 28, 2010 - 09:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Would a loose or disconnected front ground wire cause this issue?

Nevermind just checked grounds all are good. Plug wire tomorrow.

(Message edited by videoninja on June 28, 2010)
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Videoninja
Posted on Tuesday, June 29, 2010 - 01:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

New plug wire and still no dice. I don't believe fuel is the issue the plug is wet when i pull it and the carb seems to be moving plenty of fuel, I am getting spark outside the cylinder not sure about anything beyond that
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Crackhead
Posted on Tuesday, June 29, 2010 - 02:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

check the timing.

make sure the timing cup didn't spin and the red light on the ignition module lights up near when the flywheel mark is in the window.
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Videoninja
Posted on Tuesday, June 29, 2010 - 09:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ok I retract my fuel statement pulled the plug and it's dry, but the carb is pulling fuel like a champ. Won't fire on starting fluid either.
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Styxnpicks
Posted on Wednesday, June 30, 2010 - 12:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

i bet its that kickstand switch
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Ezblast
Posted on Wednesday, June 30, 2010 - 12:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Intake leak or compression loss - das boot?
EZ
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Videoninja
Posted on Wednesday, June 30, 2010 - 12:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Das Boot is in good shape. I havent done a compression test other than hand against carb and tail pipe and feels strong. I also "bypassed" the kick stand switch
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Rainman
Posted on Wednesday, June 30, 2010 - 10:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I've had problems with clutch switch on RE bikes....
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Ezblast
Posted on Wednesday, June 30, 2010 - 10:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Fliped the center diode?
EZ
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Gearheaderiko
Posted on Wednesday, June 30, 2010 - 10:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Please refrain from posting about the same problem on 2 different threads. Its confusing and makes it difficult to help when there are people responding on the two threads.
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Gearheaderiko
Posted on Wednesday, June 30, 2010 - 11:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

If it wont fire with starting fluid, you have a serious problem. Not a puff?
If the spark plug is producing a nice blue spark (not yellow), then check the compression with a tester. 75psi of compression, will show compression. But its really low to be able to run and starting is very difficult.

Given that you seemingly have checked everything, I would get a good reading on the condition of the compression. Compression testers are cheap.

Also: How much oil is in the bike? Granted, if it wont run then it probably wont show any oil in the frame either. But have you added a lot of oil recently or when was the last time you checked?
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Videoninja
Posted on Wednesday, June 30, 2010 - 11:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Center diode is flipped,

Posted on two because I initially thought it was a electrical issue but have come to the conclusion it isn't I am getting strong blue spark but the plug is dry. I did an oil change about 300-400 miles ago and oil levels seemed fine in checks afterwards. At this point I believe it's a valve issue.
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Gearheaderiko
Posted on Thursday, July 01, 2010 - 01:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

A compression check will confirm a valve issue.
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Crackhead
Posted on Thursday, July 01, 2010 - 08:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

if it has low or no compression, i am betting on a striped oil pump gear.
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Gearheaderiko
Posted on Friday, July 02, 2010 - 07:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Concur! Thats what I suspect too. But it could/should still run with a stripped gear, its just what did it take with it?
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Gearheaderiko
Posted on Friday, July 02, 2010 - 07:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

go to:
http://www.badweatherbikers.com/buell/messages/201 64/576393.html
for the continued discussion.
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