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Discussion Topic:
IGN frustration
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ross49 |
04-22-2022 @ 1:21 PM
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Member
Posts: 38
Joined: Jan 2011
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Thanks for your help Tom! I will try those things you suggested. I will let you know the outcome. Thanks again.
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TomO |
04-22-2022 @ 8:39 AM
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Senior
Posts: 7386
Joined: Oct 2009
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Thanks for the photo. It helps a lot in understanding your problem. You definitely have a short and it looks like it may be the copper strap on the left side (in your photo) points is contacting the timing screw socket. If that is not your short, remove the screws holding the spring and copper strap from one set of points and check resistance again. If you still have a short check resistance with both sets of points disconnected. If you still have a short, it will be in the connector block. Examine it and the flexible straps to see if any of them are touching the contact plate. If you need a new contact plate, try contacting Third Gen Auto ( https://thirdgenauto.com/product/new-1942-48-ford-crab-type-distributor-breaker-point-plate/ )
Tom
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lawrie |
04-21-2022 @ 3:09 PM
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Member
Posts: 40
Joined: Oct 2012
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I had a problem like that once, it was the little brass flexible connectors that go from the coil terminal to the points spring mounting, one was out of shape and was contacting the screw mounting lug and shorting out. worth a look. Lawrie
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ross49 |
04-21-2022 @ 8:44 AM
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Member
Posts: 38
Joined: Jan 2011
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Tom, reassembled the distributor and re-attached to engine. With dwell meter on lead to distributor and other on ground, cranking the engine produces no measurement. Dwell meter is an older analog type but works well as I recently used it on my 1969 F100 pick up. I would think the lack of dwell measurement would coincide with a short on the breaker plate. Would you agree? Attached is a picture of the multimeter probe attachments to the breaker plate with ohm meter at max resistance. My understanding is that it should read 1. with good insulation. As you can see it is reading 0.000 which I interpret to indicate a short in the plate. Like to hear your thoughts. Thanks.
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ross49 |
04-19-2022 @ 5:32 PM
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Member
Posts: 38
Joined: Jan 2011
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Thanks Tom. I will try the dwell check and let you know. For the breaker plate resistance check one probe was on the screw for the contact spring and the other probe was on the body of the breaker plate. The breaker plate was not in the distributor body, it was on the bench. The ohm meter was at max resistance setting. This test was as described by Milt Webb in V8 Times, 2003. Thanks again.
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TomO |
04-19-2022 @ 4:19 PM
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Senior
Posts: 7386
Joined: Oct 2009
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Thanks for the reply. Connect your tach / dwell meter to the coil lead that goes to the distributor and crank the engine. The dwell should be 34 -36 degrees. If it differs by a few degrees (28 low and 40 high) re-adjust your points. If it is more than the few degrees let me know what it is. I would like to know exactly where you had your meter leads attached when you did the resistance check and whether the coil lead was disconnected or still attached. What reading did you get? The fixed points are grounded through the contact plate and the movable points are isolated from ground and connected to the condenser and primary wire from the coil.
Tom
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ross49 |
04-19-2022 @ 12:11 PM
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Member
Posts: 38
Joined: Jan 2011
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Tom I have the 59A distributor mounted on the front of the engine. I do have a tach and dwell meter.
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TomO |
04-19-2022 @ 8:55 AM
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Senior
Posts: 7386
Joined: Oct 2009
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Do you have a 59A (distributor mounted on front timing gear cover) or an 8BA (distributor mounted on the right front of the engine) engine and distributor in your car? ( a photo of the engine would help). Do you have a tach / dwell meter? Tom
This message was edited by TomO on 4-19-22 @ 8:56 AM
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ross49 |
04-19-2022 @ 7:56 AM
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Member
Posts: 38
Joined: Jan 2011
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Thanks for your reply. I tried my original condenser and that didn't help. I worry about parts now since you never know about the quality. The electrical tape under the rotor is something I will tr y. I wondered about the gap from the rotor to the distributor cap contacts but I don't know how I could check that on these late model distributors.
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1931 Flamingo |
04-19-2022 @ 6:22 AM
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Member
Posts: 396
Joined: Nov 2019
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X2 on the condenser, nothing to lose. Let us know. Paul in CT
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