Author Topic: Electrical problem: No spark? cl90  (Read 1786 times)

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Offline Jzboy7

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Electrical problem: No spark? cl90
« on: October 12, 2011, 06:51:17 AM »
I have a honda cl 90 with no spark :-\. I had another topic introducing the bike and explaining a few details but this one is looking for help specifically on getting a spark. I really want to see this bike running again.


KingCustomCycles.com

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Re: Electrical problem: No spark? cl90
« Reply #1 on: October 12, 2011, 06:55:42 AM »
If you have power to the coil, and the points are connected and working, you will have spark.  If not, bad coil.

Offline Jzboy7

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Re: Electrical problem: No spark? cl90
« Reply #2 on: October 12, 2011, 06:58:14 AM »
Thats what i thought it was but manny people have told me that the coils rarely go. Do you know if there is a way i can test the points?

KingCustomCycles.com

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Re: Electrical problem: No spark? cl90
« Reply #3 on: October 12, 2011, 07:02:50 AM »
With the ignition switch on, put a test light on the points arm and rotate the engine.  The light should go on and off at the normal timing position.  It would not hurt to file the points contact surfaces lightly and clean by passing a piece of stiff paper between them.  Also don't neglect the ignition lead as a possibility.  Remove boot by turning counterclockwise, Trim 1/8" off the end and screw it back on will help that.

Offline Jzboy7

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Re: Electrical problem: No spark? cl90
« Reply #4 on: October 12, 2011, 07:08:54 AM »
The arm is the flat piece of metal the acts as a spring, right?

KingCustomCycles.com

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Re: Electrical problem: No spark? cl90
« Reply #5 on: October 12, 2011, 07:13:32 AM »
The arm is the flat piece of metal the acts as a spring, right?

Yes, the other side is grounded with the screws.

Offline phil71

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Re: Electrical problem: No spark? cl90
« Reply #6 on: October 12, 2011, 11:42:24 AM »
Where in CT are you?

Offline Jzboy7

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Re: Electrical problem: No spark? cl90
« Reply #7 on: October 12, 2011, 12:34:48 PM »
Windsor, why do you ask?

Offline grcamna2

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Re: Electrical problem: No spark? cl90
« Reply #8 on: October 12, 2011, 12:43:48 PM »
Hello,
   Do you have power to the points when you check it w/ a test light ?
I hope you have your battery installed by now & it's fully charged.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline kirkn

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Re: Electrical problem: No spark? cl90
« Reply #9 on: October 12, 2011, 12:51:04 PM »
Windsor, why do you ask?

He's a thug!  He wants to come by and steal your jewel.  You can never be to careful on these dang Internet sites...

:D

Offline Jzboy7

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Re: Electrical problem: No spark? cl90
« Reply #10 on: October 12, 2011, 01:19:04 PM »
Woah there, I think you got windsor and hartford mixed up lol  ;)

Offline phil71

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Re: Electrical problem: No spark? cl90
« Reply #11 on: October 13, 2011, 12:57:49 AM »
I just wondered how close you were to new york. i could get that guy going again pretty easy.

Offline lucky

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Re: Electrical problem: No spark? cl90
« Reply #12 on: October 13, 2011, 12:35:39 PM »
Thats what i thought it was but manny people have told me that the coils rarely go. Do you know if there is a way i can test the points?

To test the points you need to set them statically.
Then check the dwell. If the gap is correct and you it started and then the dwell is off you need new points. The reason is the phonelic block on the points that rubs on the cam may be worn down.

The condensers are measured in microfarads and it is stamped on the condensers. Like 22u.
It takes a sophisticated meter to measure them and it is easier to just get new ones.

Also unscrew the spark plug cap from the spark plug wire and cut off about 1/4 inch and screw it back on. Sometimes the end of the wire gets burned.

Put a clamp on DC timing light on the spark plug wire to see if it is getting a spark.
« Last Edit: October 13, 2011, 12:40:28 PM by lucky »

Offline grcamna2

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Re: Electrical problem: No spark? cl90
« Reply #13 on: October 16, 2011, 10:42:33 AM »
Jzboy7,
    Did you get any spark on your bike yet ? I hope you do.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.