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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Static Ignition Timing for XB12s without special test equipment « Previous Next »

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Jim_h
Posted on Monday, May 01, 2006 - 10:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I would like to check the static ignition timing and I have the factory service manual. The manual talks about connecting a "digital technician" to the data port which I don't have. Is there a method of doing this that doesn't require some special test equipment? I understand what the timing should be and how to change it if it isn't correct, I just need to know what (when) the cam position sensor is reading.
Appreciate the help in advance.
Jim H
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Gowindward
Posted on Monday, May 01, 2006 - 12:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Jim, Take a look at this. It should get you lined out on what you need to do.

http://www.badweatherbikers.com/buell/messages/32777/127986.html

I have done this except because I have an R model it's easier to probe the wires at the cam sensor than pull the fairing to get to the ecm.
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Skully
Posted on Monday, May 01, 2006 - 01:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Cool! Thanks for the info.
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Jim_h
Posted on Monday, May 01, 2006 - 01:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Gowindward, Thanks. That's just what I was looking for. A couple questions:
- what wires do you use when you take your readings from the cam sensor?
- what did you use to replace the rivets that you have to drill out?
Thanks again,
Jim H
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Gowindward
Posted on Monday, May 01, 2006 - 03:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Jim,

It's the same black w/ white tracer and green w/ white tracer as indicated in the referenced post. One end of the wire is at the ECM the other at the cam sensor. You can see that on one wire diagrams in the service manual. I stuck straight sewing pins into the wires to be able to probe them. My DMM probes are not small/sharp enough to get through the insulation cleanly.

I drilled and tapped the rivet holes for I think it was 10-24 button socket head stainless machine screws.
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Davo
Posted on Monday, May 01, 2006 - 10:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Good news regarding VDSTS. Check out the post on the Uly Forum.

http://www.badweatherbikers.com/buell/messages/142838/193800.html?1146490402
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Diablobrian
Posted on Monday, May 01, 2006 - 10:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What changed Davo? This software has been available for at least a year.
They've been promising expanded features the whole time. I'm sure they
are honestly working on it. Technoresearch has been a reputable company
by all accounts, but I wouldn't hold my breath.
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Jim_h
Posted on Tuesday, May 02, 2006 - 08:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Gowindward,
Appreciate the help. I found the wiring diagrams in the manual after I sent the message - I see what you mean. I'll check the timing this weekend - it's probably close to right. No complaints about power, but there's some funny noises that are driving me crazy.
Jim H
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Davo
Posted on Tuesday, May 02, 2006 - 08:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Diablobrian,
I was hoping that they would modify the software to include fuel pump voltage under the channel command. I simply listened for the fuel pump to cut on and after about four times around I was able to get a good fix on my timing mark. My bike was early. Now it ain't and no more pinging!

(Message edited by davo on May 02, 2006)

(Message edited by davo on May 02, 2006)
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Diablobrian
Posted on Tuesday, May 02, 2006 - 08:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Cool. I wasn't trying to flame you. I promise. You should email technoresearch and tell
them what you'd like to see them add to the software.
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