New coil, cap and wires, still no start

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Glen
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Re: New coil, cap and wires, still no start

Postby Glen » Sun Jun 04, 2017 8:04 pm

Hi,
Here is his other post.

viewtopic.php?f=1&t=96631

Waif
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Re: New coil, cap and wires, still no start

Postby Waif » Sun Jun 04, 2017 8:55 pm

Glen wrote:Hi,
Here is his other post.

http://www.farmallcub.com/phpBB2/viewto ... =1&t=96631


Thanks.

Still don't get keeping mag 6 volt and the rest of the system 12 volt.
Last edited by Waif on Sun Jun 04, 2017 9:31 pm, edited 1 time in total.

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tmays
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Re: New coil, cap and wires, still no start

Postby tmays » Sun Jun 04, 2017 9:03 pm

Mag operates independent from the charging system
Thomas

Waif
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Re: New coil, cap and wires, still no start

Postby Waif » Sun Jun 04, 2017 9:28 pm

tmays wrote:Mag operates independent from the charging system


Yes,totally independent.
O.P's issue is ignition related. Mag. / mag and it's ignition components ,to plugs.
I'll delete the crazy part of my previous post..

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Re: New coil, cap and wires, still no start

Postby rstoots » Wed Jun 07, 2017 9:23 pm

Installed new condenser, cleaned points, checked points for gap and spring tension still no spark.
Since I have replaced all firing components I guess the only thing left is to start installing old plug/coil wires, dist. cap and see what happens.
I did not hook up ground wire to dist yet. Cub was running good when I parked it so I have done something.

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Rick Spivey
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Re: New coil, cap and wires, still no start

Postby Rick Spivey » Thu Jun 08, 2017 4:47 am

I'm still not clear on what you did to replace the magneto coil after it was fried by attaching 12 volts to the ground stud. Could you clarify that point please?
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Eugene
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Re: New coil, cap and wires, still no start

Postby Eugene » Thu Jun 08, 2017 7:55 am

rstoots wrote:I did not hook up ground wire to dist yet.
Explain this sentence. The magneto and it's electrical components are grounded to the engine block.

If you haven't connected the wire from the coil to the terminal on the side of the magneto, would explain why you have no spark.

Did you change the magneto kill switch to one for a battery powered ignition system - - and wire the switch to the electrical system???
I have an excuse. CRS.

rstoots
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Re: New coil, cap and wires, still no start

Postby rstoots » Thu Jun 08, 2017 8:06 am

I purchased a new 1 post switch, magneto coil , condenser, dist cap, plug wires from TM.
I fried the magneto coil with 12v because I wired it for an external coil with incorrect sw.
The correct sw grounds the magneto to kill the motor.

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Re: New coil, cap and wires, still no start

Postby Eugene » Thu Jun 08, 2017 8:14 am

OK. Thanks. This has been one confusing topic as to what was actually done. I was of the impression that you installed an external coil.
I have an excuse. CRS.

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Rick Spivey
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Re: New coil, cap and wires, still no start

Postby Rick Spivey » Thu Jun 08, 2017 6:01 pm

So since you are into the magneto, a couple of pointers. You may actually have fried the points and/or condenser as well, I would probably either inspect the points, but since they don't cost so much, replace and be sure. No way to check the condenser (no easy way). NEVER "click" a magneto over without somewhere for the spark to go, that will also fry a coil. Both the coil and condenser should be connected to the terminal on the inside of the magneto. That post is insulated from the magneto body by a plastic or fiber or bakelite insulator. If it is decayed or cracked, the current will "leak" to the body, making it like the kill switch is on all the time. Finally the rotor and pinion are "timed" to one another by cast scribe lines/dots/triangles. If all those things are in order, the magneto should fire, that are fairly bulletproof when set up correctly. Check all those items and report back.
Rick Spivey
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
'57 Lambretta (a slow work in progress)
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rstoots
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Re: New coil, cap and wires, still no start

Postby rstoots » Mon Jun 12, 2017 4:24 pm

Post was OK, adjusted points got spark, still no start. Checked timing and it was 180 out. Corrected rotor location and it started.
Must have turned rotor somewhere in the process.\
Thanks to all that responded.


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