No Spark!, Stumped |
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No Spark!, Stumped |
Dennis |
Oct 25 2012, 01:45 PM
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#1
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Newbie Group: Members Posts: 28 Joined: 21-August 04 From: Sobieski, Wi. Member No.: 2,589 Region Association: Upper MidWest |
I have a Raby dyno'd 2270 that I have recently installed in my going on 4 year '74 restoration. It has a Mallory Unilite distributor and Mallory Promaster E series coil with ballast resistor. I can't get a spark at the plug or out of the coil. I have checked posts here and across the internet to no avail which means I'm missing something simple.
I have checked that the coil is not shorted and has proper primary and secondary resistence. The coil is getting 12 v on the '15' and '1' side with ignition in 'on' and in cranking mode. Although the voltage drops to about 10V when cranking. The tach lead is connected to the '1' side of the coil. The ballast resistor is in series with the +12 v connection from the ignition to the distributor. The coil is mounted to the engine tin on the passenger side near the oil cooler. I have checked that the distributor "points" are opening and closing. Can anyone see the simple item I have missed? Denis |
edwin |
Oct 25 2012, 04:01 PM
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#2
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Member Group: Members Posts: 321 Joined: 20-May 09 From: Australia Member No.: 10,384 Region Association: Australia and New Zealand |
Points or elec module in the unilite? The modules have a habit of dying from what I've read
Pretty sure you need to run spiral leads with that setup |
underthetire |
Oct 25 2012, 04:01 PM
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#3
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
Not following your ballast resistor set up..
http://www.pertronix.com/support/manuals/p...nitor12vneg.pdf |
timothy_nd28 |
Oct 25 2012, 05:28 PM
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#4
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Advanced Member Group: Members Posts: 2,299 Joined: 25-September 07 From: IN Member No.: 8,154 Region Association: Upper MidWest |
sounds like your points are burnt. If this is true, you'll need a new set. For a temp repair, and will not last long, remove the points and file lightly the point surface. Reinstall and try again. If this works, order a couple extra sets of points.
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cgnj |
Oct 25 2012, 06:05 PM
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#5
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Senior Member Group: Members Posts: 634 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
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timothy_nd28 |
Oct 25 2012, 08:32 PM
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#6
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Advanced Member Group: Members Posts: 2,299 Joined: 25-September 07 From: IN Member No.: 8,154 Region Association: Upper MidWest |
sounds like your points are burnt. If this is true, you'll need a new set. For a temp repair, and will not last long, remove the points and file lightly the point surface. Reinstall and try again. If this works, order a couple extra sets of points. My bad, I didn't realize that you had a pointless dizzy. Didn't you say in your first post that you witnessed the points open and close? (IMG:style_emoticons/default/confused24.gif) |
cgnj |
Oct 26 2012, 08:24 AM
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#7
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Senior Member Group: Members Posts: 634 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
sounds like your points are burnt. If this is true, you'll need a new set. For a temp repair, and will not last long, remove the points and file lightly the point surface. Reinstall and try again. If this works, order a couple extra sets of points. My bad, I didn't realize that you had a pointless dizzy. Didn't you say in your first post that you witnessed the points open and close? (IMG:style_emoticons/default/confused24.gif) He used points in quotes. Upon review, he did say he confirmed the operation of the sensor, so looks like a coil. If you have a Bosch blue coil, it should work without the resister. Carlos |
Dennis |
Oct 26 2012, 12:01 PM
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#8
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Newbie Group: Members Posts: 28 Joined: 21-August 04 From: Sobieski, Wi. Member No.: 2,589 Region Association: Upper MidWest |
Thanks all. Sorry for the confusion in the description of the ignition set up. The distributor does not have points. I do have the ballast resister wired correctly; not as I described it. (I didn't even spell my own name correctly in the post!)
I will try the Mallory Unilite test procedure again but the problem is that I don't get a spark from the coil to deliver to the distributor. |
Tom |
Oct 26 2012, 12:15 PM
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#9
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
In your first post you say you have 12 volts at 15 and 1. 1 is the dizzy side and should go to 0 volts when the "points" close. If your module in the dizzy is not closing the ground circuit, you will not get a discharge from the coil. I also see that you say the "points module" is opening and closing. If this is in fact true, you have a bad connection between the 1 terminal and the dizzy module.
Tom |
euro911 |
Oct 27 2012, 01:30 AM
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#10
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,855 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
(IMG:style_emoticons/default/agree.gif)
I'd reinstall a standard Bosch dizzy with breaker points to determine if high voltage is building up in the coil with the points closed, and discharging when the points open. If you get spark at the plugs (or even just at the coil), the Unilite module is probably toast. |
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