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Re: 8n spark

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Author  [Modern View]

05-13-2013 08:32:29

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well.. you got it to start and run 10m.. so you know it WILL run.. and is at least itmed close enough to start.

jump power right from battery to coil.

see if ya got spark.

while a start and run for a short time is usually making me think fuel... however. you report no spark.. so we need to correct that first.

post back after the hot wire test.

if nothing on hotwire. insuert a test lamp in line and turn key on. lamp should blink as you crank.

lamp on 100% time = a short past the coil.

lamp never on = an open circuit somewhere.

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Rob (Wyo)

05-13-2013 17:18:21

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 Re: 8n spark in reply to soundguy, 05-13-2013 08:32:29  
I have power to the disty (is that what you were looking for per your test?). Here is more info. I have 6.2 volts at the coil, both + and - sides with switch on. I have 6.2 volts at coil wire going to disty with switch on. I have 6.2 volts at wire going to points with switch on, 0 with switch off. With switch on, I have 6.2 volts at dist body with points closed, 0 with points open. I read on a message to take main coil wire and hold it to ground while opening and closing points I should get a spark at coil wire. What I got was spark at one of the screws that hold the cover down underneath the points. I also get good spark when I short the screwdriver from the points to the distributor shaft (wasnt on purpose, but good spark none the less).

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05-14-2013 07:00:46

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 Re: 8n spark in reply to Rob (Wyo), 05-13-2013 17:18:21  
ditto what jmor said. it may be the points are not grounding when closed because breaker plate is partially inuslated by corrosion / not properly grounded

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05-13-2013 17:24:46

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 Re: 8n spark in reply to Rob (Wyo), 05-13-2013 17:18:21  
Quoting Removed, click Modern View to see2 screws attach breaker plate to distributor body. It sounds like corrosion has gotten in & isolated the plate from ground. I have seen this before. Clean up plate to body interface & put star washers under those 2 screws...possibly just the washers will do the trick for you.

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Rob (Wyo)

05-14-2013 16:54:05

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 Re: 8n spark in reply to JMOR, 05-13-2013 17:24:46  
Tried just cleaning up where the screws attached and underneath the star washers, no luck. Took out the breaker plate and took some emery to it, as well as the lip that it sits on and .........vroom vroom! Thanks for the help!

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05-14-2013 16:58:13

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 Re: 8n spark in reply to Rob (Wyo), 05-14-2013 16:54:05  
You are more than welcome! I chased that one before, out in near 100F Texas sun, so happy to save you that!

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