|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
02-07-2020, 05:27 PM | #1 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Coil Tester needed
Does anybody have a US source for a coil tester like the one shown. This one is a little pricy on ebay at $50 and I would pay that except it is in Columbia and would be 3 or 4 weeks to get to me. I would like one much sooner than that. Any help would be appreciated. Jim in San Jose.
|
02-07-2020, 07:55 PM | #2 |
Senior Member
Join Date: May 2010
Location: Portland OR
Posts: 6,340
|
Re: Coil Tester needed
https://www.autoblog.com/2016/08/01/...ignition-coil/
https://www.liveabout.com/bench-test...n-coil-4177225 There are a lot more, just google test car coil
__________________
I know the voices aren't real but damn they have some good ideas! |
Sponsored Links (Register now to hide all advertisements) |
|
02-07-2020, 07:57 PM | #3 |
Member
Join Date: May 2017
Location: Kansas
Posts: 47
|
Re: Coil Tester needed
I made one using an old distributor and spark plug.
|
02-07-2020, 08:35 PM | #4 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Coil Tester needed
What I am looking for is a device that makes and breaks the primary circuit continuously so I can see the spark. I have a tester that measures the primary and secondary winding continuity and resistance. The picture posted is not very clear but there is a blithering continuous blue spark shown. That is what I want to do and see. Thanks for your help, Jim in San Jose.
|
02-07-2020, 08:59 PM | #5 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,753
|
Re: Coil Tester needed
I got one like this on Epay.
|
02-08-2020, 11:15 AM | #6 |
Senior Member
Join Date: May 2011
Location: SW Virginia near the Blue ridge Parkway
Posts: 674
|
Re: Coil Tester needed
Sponsored Links (Register now to hide all advertisements)
https://www.ebay.com/itm/1-Spark-Plu...cAAOSwYDZd-Y5x |
02-08-2020, 11:53 AM | #7 |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,046
|
Re: Coil Tester needed
__________________
If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
02-08-2020, 07:33 PM | #8 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,436
|
Re: Coil Tester needed
The old Sun CCT-10 coil tester was a very good unit but is still expensive to this day.
It does a condencer test and a coil test. https://www.garagejournal.com/forum/...ad.php?t=32791 The ones made back in the 50s would even preheat the coils for a good test but they didn't test the condenser and they had no oscilloscope. |
02-09-2020, 09:23 AM | #9 |
Junior Member
Join Date: Oct 2011
Location: Holt, Michigan
Posts: 20
|
Re: Coil Tester needed
Sorry to hijack this thread- I have the older version of this Snap-on tester, (the MT-640), but it was missing the adjustment screw/knob when I bought it. I did make a replacement screw/knob for mine but I do not know what the "gap" between the brass points is when the indicator edge of the knob reaches the "green- good" margin is. Bob, if you get a chance, would you please measure this "gap" for me? This gap measurement may help others also with that product listed above on ebay.
Thank you in advance, Kyle Holt, MI |
02-09-2020, 01:53 PM | #10 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,753
|
Re: Coil Tester needed
From the bottom of the knob to the tip of the point is 1 51/64".
I would like to find the neon bulb. It shows in the picture but the seller did a lousy packing job and it was broken when it arrived. Bob |
02-09-2020, 03:06 PM | #11 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Coil Tester needed
Thanks Katy. That is exactly what info I needed. I will try to build the tester you show. Jim in San Jose
|
02-09-2020, 06:13 PM | #12 | |
Junior Member
Join Date: Oct 2011
Location: Holt, Michigan
Posts: 20
|
Re: Coil Tester needed
Quote:
Bob, thank you for taking the time to measure that. My Snap-On MT-640 model's stationary point appears to be about 3 times longer than the Snap-On MT-335 model. The adjustment knobs are different lengths. From your photo I think the two brass posts are about the same distance apart. Do you or any other members know what is a satisfactory distance the spark should jump for a 6 volt coil to be considered good. Thank you again, Kyle |
|
02-10-2020, 12:21 PM | #13 |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,046
|
Re: Coil Tester needed
Kyle, if you can borrow one of the cheap spark testers you could measure the spark gap at various voltages. May not be accurate, but should be close.
__________________
If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
02-10-2020, 01:01 PM | #14 |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,046
|
Re: Coil Tester needed
Or try this chart:
__________________
If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
02-10-2020, 01:15 PM | #15 |
Senior Member
Join Date: May 2010
Posts: 1,262
|
Re: Coil Tester needed
I just read an article that showed a coil can be tested with an ohm meter by checking across the two small posts and then checking from one small post to the spark plug connector.
This was for the Model A but did not give any spec's as it said "Determine the resistance using your multimeter and check to see if it's within the acceptable range". What is the acceptable range on a 6V coil on the Model A? |
02-10-2020, 01:48 PM | #16 |
Junior Member
Join Date: Oct 2011
Location: Holt, Michigan
Posts: 20
|
Re: Coil Tester needed
|
02-10-2020, 03:08 PM | #17 | |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,753
|
Re: Coil Tester needed
Quote:
Kyle, I measured the gab when the knob is in the green area and it is between 9/32" and 21/32". Bob |
|
02-10-2020, 05:26 PM | #18 | |
Junior Member
Join Date: Oct 2011
Location: Holt, Michigan
Posts: 20
|
Re: Coil Tester needed
Quote:
Awesome!! Now I can fine tune the adjustment knob and test a few coils to see which ones are the best. Thank you for taking the time to measure that gap. I'm sure it was not easy. Kyle |
|
02-10-2020, 05:52 PM | #19 |
Senior Member
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,636
|
Re: Coil Tester needed
|
02-11-2020, 02:27 AM | #20 |
Senior Member
Join Date: Mar 2012
Location: Addison,ll.
Posts: 454
|
Re: Coil Tester needed
The units which need a bulb use a Geisler tube. They were used in distributor testers and also the ball point looking testers to test for spark. Snap On used to carry them in their parts books. Don't know who presently supplies them. I can supply instruction sheet and schematic for the various Snap on testers.
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|