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Re: No spark 54 Patrician
#11
Not too shy to talk
Not too shy to talk

BrianGalway
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Howard

I am totally new at this. Do you mean a multimeter to check voltage? Can you give me the time to walk me through the process? Appreciate your taking the time. I will get this figured out with a lot of help and keep you in the loop


Brian

Posted on: 2020/7/1 13:41
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Re: No spark 54 Patrician
#12
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Not too shy to talk

BrianGalway
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Hi

How did you determine the distributor was grounded?

Thanks

Brian

Posted on: 2020/7/2 5:13
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Re: No spark 54 Patrician
#13
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HH56
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Yes, you need an ordinary volt-ohmmeter available at Amazon, Harbor Freight and multitudes of other places. Prices vary from the low teens to the hundreds of dollars and you do get what you pay for. There is no need to get an expensive multi function precision meter for this purpose so for the basic needs of checking a few voltages a decent meter with features useful for cars and checking other thing around the house can be found for around $20-25.

Once you have a meter, to measure the places I mentioned select DC volts. Most meters are auto-ranging and you can just connect the wires and measure. Inexpensive meters sometimes are not auto-ranging. If yours has a voltage select range then for best accuracy in the car pick a lower range -- say 25 volts or what ever one of the lower ranges might be -- so the 6v you are expecting to measure will be a third to halfway in that range. As an example of accuracy, if you have selected an appropriate range the reading right across the battery might be 6.310 but if you had selected a higher range the meter would still read but might just say 6v and you would not be able to tell if it was 5.9, 6.0, 6.1, 6.2 etc. A few tenths of a volt makes a big difference with a 6v ignition system.

To take the measurement, for a positive ground car, place the red lead on a good clean metal ground surface and the black lead on the terminal you are going to measure and then read the value. If the meter leads are reversed it would still read but the polarity would be incorrectly indicated. Not an issue here but could be confusing if you were measuring something else.

What I meant in the distributor grounding is many times after a car has sat for long periods of time oxidation, corrosion or rust can form between metal surfaces that would normally be clean. Anything like that can have resistance so instead of two bright shiny surfaces being able to carry a solid voltage at no loss there could be some added resistance and extra resistance anywhere in the wiring is the enemy of 6v ignition systems.

To check you could put the meter on volts and see if there is a big change between readings at two points that should be tightly connected together such as a wire directly running between two terminals. If one terminal read 6.3v and the other was 5.9 you know something has happened and .4 volts disappeared. The most likely suspect then is a corroded or rusty connection.

In this case, to check the distributor ground I would remove the wire from the distributor terminal and set the meter to ohms. With one lead on the clean block and the other on the distributor terminal if the points are open you would read nothing on the meter. If the points are open and you read anything then there is a short in the distributor but if the points are closed then ideally it would read 000 or maybe as high as .1 or .2 ohms. If the reading was much higher than .3 ohms then I would suspect a poor connection such as rust on the distributor mounting clamps or oxidation on the point base to plate connection or between the point contacts or even a poor connection between the points and the outside terminal.

When taking an expected low value ohm reading it is also sometimes good to touch the two meter leads together and see what the meter reads before measuring the component. Sometimes the plugs or connections in the meter leads will add a bit of resistance. As an example, if you measure .1 ohms before touching to the component you are measuring you know to subtract the preliminary meter reading or .1 in this case from the actual value of the final measured reading.

Posted on: 2020/7/2 9:59
Howard
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Re: No spark 54 Patrician
#14
Not too shy to talk
Not too shy to talk

BrianGalway
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Thanks!

Posted on: 2020/7/2 16:56
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Re: No spark 54 Patrician
#15
Home away from home
Home away from home

Kevin AZ
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The degree to which help has for years been available here is a tribute to people like HH56. Your counsel, guidance and help I'm certain has assisted untold people around the world. Thankyou for the gift of your expertise and knowledge.

Posted on: 2020/7/2 19:28
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Re: No spark 54 Patrician
#16
Home away from home
Home away from home

John Brinegar
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Amen !

Posted on: 2020/7/2 20:19
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Re: No spark 54 Patrician
#17
Home away from home
Home away from home

Packard Newbie
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Allow me to throw dibs in there too!!! You're a peach, Howard!! Many thanks. Chris.

Posted on: 2020/7/2 21:34
'If you think you can, or you think you can't - you're right!' Henry Ford.
1939 Packard Six, Model 1700
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Re: No spark 54 Patrician
#18
Quite a regular
Quite a regular

Jim/KB1MCV
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Brian, the above is excellent advice and more clearly explained than I would be able.

There are several books which will help you getting the car sorted out if you don't already have them.

An owner's manual for your specific car, reprints are available, check e-bay or I think on this site.

"Keep Your Packard Rolling" by Neal Donovan, Packard Books, Inc. 83 Quaker Lane, Fairfield, Ct. 06430-4511. Probably out of print but last time I checked it was available on Amazon.

A Motors Manual covering your year. These books are available on e-bay and through used book dealers. They really are a basic course in pre-computer automotive repair and maintenance.

Good luck.

Posted on: 2020/7/5 15:44
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Re: No spark 54 Patrician
#19
Not too shy to talk
Not too shy to talk

BrianGalway
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Hi Guys

Which forum can I post jpg pictures on?

I have found 2 loose wires under the dash. One is black and it appears to be hooked to the ignition starter switch. It appears to also be one part of a set that holds a fuse?

The second wire comes from the engine bay into the driver area and has a metal clip on the end. A tightened screw would hold it in place. Same idea as the wires connected to the coil.

Both these wouldn't connect would they? Just a thought. Will post pictures when I know where I can post


Thanks

Brian

Attach file:



jpg  (132.03 KB)
213338_5f44526c1e670.jpg 1441X1920 px

Posted on: 2020/8/24 17:17
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Re: No spark 54 Patrician
#20
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HH56
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You can post pictures in any of the forums and if you do it before 24 hours have passed, you can even add the photos in your post above where you asked the question. Just use the "Edit" button to reopen the post and follow the posting instructions in the next paragraph. For the photo to be readily viewable in the forum it is best to use a standard format most cameras or photo programs can output such as a jpg. While the forum can take some large files up to 10 meg, for best results and for those with slower internet connections try to keep the size 500k or less.

To post a photo use the "Choose File" button found in the area just below the box that is open where you type a post. That will open the file explorer on your computer. Once that opens navigate to where the photo is located on your computer and once you have found the photo highlight it and click on "Attach File". Only one photo per "Attach File" click but you can repeat the process and add several photos by doing them one at a time before you click on the "Submit" button to post everything.

If you are using an ipad or iphone it might be a bit more involved because you will probably need to convert the native format to jpg and may need to resize to smaller. Both can be done by built in photo editing programs and storing the photo or by emailing the photo to yourself and then posting from wherever email photos are stored.

Posted on: 2020/8/24 17:41
Howard
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