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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Ignition, Battery, Charging System - Electronic Trouble shooting » 2001 Blast no spark but cranks » Archive through September 18, 2009 « Previous Next »

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R38007
Posted on Wednesday, September 02, 2009 - 11:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Well first off I am a new rider(did the Team Oregon class and passed with flying colors)and I happened to get my hands on a 2001 Blast. Very cool bike and I cant wait to ride it : D

Anyways now my mini intro is done this is what I have going on...

I have no spark,The guy I bought it from is pretty sure its the ignition module,but since this is a used bike and it does need some TLC I want to check it all out before I buy the part.

Here is what I have checked/done:

Battery needs to be replaced,dont know how old but it looks like the stocker(no date stamp)...it had enough juice to power up the starter and the starter module LED flashes as if its sending spark. Bike turns over just no spark! and its flat now.

Grounds
Rear ground is tight and clean,front is tight but a little "fraid" looking,thinking I should replace.

Bypassed clutch switch and checked for loose cables all looks good.

Now I dont have a service manual for this so I will try to explane what I found...this item is next to the sprocket looks to be some sort of pressure sensor,well it was very loose.I snugged it down, I dont know what it does.

I need to test out the plug wire and get a new spark plug and eliminate those as problems...I am almost temped to get a coil but really dont want to buy something I dont need.

Any and all info would be great! I am new to bikes but I have no problems wrenching away on anything.I also have a volt meter I can pull numbers if it helps.
Let me know what you guys think/need to know and I will get that info.

Thanks!
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Ezblast
Posted on Wednesday, September 02, 2009 - 01:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Could also be the coil - check ground there.
EZ
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R38007
Posted on Wednesday, September 02, 2009 - 02:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Will do, I did not check that yet. I will check and report back.
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Swampy
Posted on Wednesday, September 02, 2009 - 11:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Welcome to the Thumper Forum R38007!

If your LED is flashing I would start looking at the coil, coil wire, and spark plug. Recheck everything, carefully. I would also makesure you have some fresh premium fuel in the tank and through the carb.

Good luck, let us know!
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Ezblast
Posted on Thursday, September 03, 2009 - 12:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Concur!
EZ
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R38007
Posted on Monday, September 07, 2009 - 06:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Coil wire seems good,I have not tried a new plug yet. What would be the best way to test the coil?

Got some nice prem gas ready to go once I get some sparkin'

I charged up the battery seems to be holding well(must be newer then I thought)

I will try tracking down a spark plug and if I can get the coil tested as bad I will get a new coil.

Sorry for the late reply...I was out camping all week
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Ezblast
Posted on Monday, September 07, 2009 - 11:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

OK - Put the plug wire contact against the frame while cranking and see if there is spark.
EZ
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R38007
Posted on Tuesday, September 08, 2009 - 11:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I did that trick and no spark,I did a test on the spark plug cable and im getting power from one end to the other.

So since my ign module LED is flashing red when I crank it over it should be working then? Is there a good way to test that part out?

I do have a voltmeter that I can put on the coil,I just dont know what the numbers are that coil should be putting out for power.

I will try and get a new plug just in case this one is bad,Looks brand new but I much rather spend $5 then $30 if you know what I mean : )

Thanks again everyone,I will post what I find out when I get home today.
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Ezblast
Posted on Tuesday, September 08, 2009 - 03:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Definately a bad coil.
EZ
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R38007
Posted on Tuesday, September 08, 2009 - 03:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Sounds good,Looks like I will be getting a new coil sent my way soon.

Thanks for the help and when I get her running I will have to get some pics up!
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Swampy
Posted on Tuesday, September 08, 2009 - 07:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

A coil can be tested by using some jumper leads from the battery. Just rub/touch a hot wire across the ignition lead on the coil. Remember to ground the ground terminal and you should see a spark at the high tension lead.

I know running voltage is reduced but in the old days there was cranking bypass voltage to compensate for the voltage drop when cranking, so it would not hurt a thing to test it like that.
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R38007
Posted on Wednesday, September 09, 2009 - 11:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

New Coil is on the way,so we will see whats what.
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Damnut
Posted on Friday, September 11, 2009 - 10:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

You can do an Ohms check to see if the coil is good. If you hold the coil in your hand, have the SP wire on top and the 3 pin connector on bottom, measure the 2 pins on the right side. You should ge between 0.4 & 0.6 ohm. If so the coil is good.

Also if you measure the White/Black line wire on the coil connector you should measure 12V.

I am going through the same exact problem as you.

Now that I finally found my service manual I can start really finding out what's wrong.

One thing the manual says is that if the ignition module (part under the timing cover) blinks while cranking it over then the module is bad. Can someone pull their timing cover off and confirm this?

I would like to have this confirmed before I buy a new module.
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R38007
Posted on Friday, September 11, 2009 - 11:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks! I just got my hands on the service manual and read the same...Mine does the same thing.Red light flashes when cranking the motor.

I am almost ready to just buy a module just so I dont have to wait so long to get one(No local dealers here)

I would like to know if thats the case as well...
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Toniportray
Posted on Friday, September 11, 2009 - 11:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Last time I had timing problems I adjusted the timing by rotating that module, but I did so based on when the led light came on while I manually rotated the rear wheel in gear (later used an actual timing light to test at fast idle). The light would come on when a spark signal would normally be sent out, but it would still come on even while I was spinning the back wheel. Maybe this circuit shuts off while the starter is engaged, but I haven't checked since I'm away from my Blast. All I know is that module still lights up even without the engine running as long as the red open circuit switch is engaged.
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Damnut
Posted on Friday, September 11, 2009 - 12:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

FYI the ignition module is ~$177.
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R38007
Posted on Friday, September 11, 2009 - 03:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yep I know its price : D Its just one of those things I would not mind having a spare of since I cant get anything local here.

Coil might show up today,Would be killer to get this thing up and running.
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Gearheaderiko
Posted on Friday, September 11, 2009 - 03:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

NO!
If the LED blinks/flashes you should be getting spark. If it DOES NOT BLINK you are NOT GETTING spark. No led flash/ no spark.
You may get a variety of LED flashing that does not lead to spark. Usually erratic flashing, such as a bright flash followed by several faint flashes.

A coil tested by ohm meter may test good, by still may break down with running and heat. There is such a thing as a coil tester that will simulate engine running that is a better test. This also goes for many electrical parts-they may 'test' good, but fail when under load/heat/running.

I dont have any access to a manual to see if this LED business is a misprint or mis-read. Far, far away from home right now.
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Damnut
Posted on Friday, September 11, 2009 - 09:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have 2 coils and put them both on my bike, no sparky. I did an Ohm test and they both tested OK. My spare coil came off a running bike. I also have 12V at the coil. Need to dig in a little deeper.

Found a ignition module on Ebay for 35 bucks shipped. Should have it sometime next week. Nice to have as a spare, just in case.
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Gearheaderiko
Posted on Friday, September 11, 2009 - 10:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Damnut: Does your LED flash?
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Damnut
Posted on Saturday, September 12, 2009 - 03:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

When I turn the bike over, the LED on the ignition module flashes. Which I figured it to be working since it was flashing and the flash was the command to spark.

The thing is, is that the manual is stating that is a faulty module. I wouldn't think so and that's why I'm asking if someone with a working bike can check theirs to see what the deal is.
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Ezblast
Posted on Saturday, September 12, 2009 - 05:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Look up Reuel's comments on ignition, he explains well why it works fine cold, but as the bike warms up - it - the ignition - deteriorates. It is a common occurrence on the 2000, 2001, and early 2002 Blasts - it has been rectified and upgraded. No recalls though, so no free replacements.
EZ
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Damnut
Posted on Saturday, September 12, 2009 - 05:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have an 03 and it doesn't fire at all, cold or not. not even a hint of a spark....... nada, nothing, ziltch.
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Gearheaderiko
Posted on Monday, September 14, 2009 - 11:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

"that's why I'm asking if someone with a working bike can check theirs to see what the deal is"
I did answer that question and have spent a lot of time watching them flash!

EZ's comment is that more early (2000-2002) modules fail than any other, but they all can fail.

FWIW: Stock ignition modules dont spark (from my testing) on the first compression stroke. It lets the engine get a nice spin going. Aftermarket modules often spark at the first compression stroke giving it a much faster start, but more prone to kick back especially under hard start conditions.

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Gearheaderiko
Posted on Monday, September 14, 2009 - 11:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

PS On some aftermarket ignitions (as with point ignitions) you can turn the module clockwise/counterclockwise and get it to spark. The stock Blast module wont do this (if I remember correctly, because of the spark/start delay), but I dont remember if there is a way to fool the module into thinking its cranked over once already. An easy way to test spark if so inclined. (WARNING: do this with a spark plug out of the engine and not near gasoline!)
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Damnut
Posted on Tuesday, September 15, 2009 - 12:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Replace the module today, all's good now. she fired right up. Gotta put her back together and go for a ride.
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Johnnymac
Posted on Wednesday, September 16, 2009 - 11:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

w00t!
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R38007
Posted on Wednesday, September 16, 2009 - 02:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

WOW Holy thread jack batman!! :P :P

My parts should be here today,wish me luck!
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Johnnymac
Posted on Thursday, September 17, 2009 - 11:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Good luck!
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R38007
Posted on Friday, September 18, 2009 - 12:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Well no go...Still no spark.

I traced everything back and its looking like the ign mod. is to blame (although I did have a bad coil too its seems)

So new ign is on its way,I am pretty sure I should be up and running after it shows up...I wanna ride!

I also need a new voltmeter...my cheapo $20 is about done with life /shrug
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