 Dwell measurement and meter behavior |
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| Tdskip |
 Dec 9 2018, 07:03 PM
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Advanced Member  Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None 
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Hi guys, hope eveyrone is having a good Sunday.
I picked up an Innova multimeter to measure dwell on the cars. Not sure what is normal behavior but it has a reading BEFORE I connected it to anything, meaning when I turned it on it was reading around 90 despite NOT being connected to anything. When I connected it to the car (red to - coil terminal and black to ground) I got a steady 69.5 reading. The 69.5 reading is a bit high but in the right range, but not sure how much I trust it given that I would have thought the meter would read zero when it was powered on but not connected to a signal. Anyone have a digital meter they use that could confirm normal/expected behavior of these things? Thanks! |
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| 76-914 |
Dec 10 2018, 12:05 PM
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,519 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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You should have spent the money on a set of Petronix and never again need to set dwell or replace the points. (IMG:style_emoticons/default/shades.gif)
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| Mark Henry |
Dec 10 2018, 01:38 PM
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(76-914 @ Dec 10 2018, 01:05 PM)  You should have spent the money on a set of Petronix and never again need to set dwell or replace the points. (IMG:style_emoticons/default/shades.gif) Even with bosch points and blue coil dwell was rarely an issue. New Bosch points, condenser and test the coil... pretty simple. One thing that can mess you up is the point gap. they tend to close a bit after tightening the set screw. Try an .018" feeler then recheck the gap, often you end up with the .016" needed. |
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Posts in this topic
Tdskip Dwell measurement and meter behavior Dec 9 2018, 07:03 PM
Tdskip Anyone able to comment on whether the 12 m will ha... Dec 10 2018, 11:08 AM Mark Henry http://dtec.net.au/Ignition%20Coil%20Dwell%20Calib... Dec 10 2018, 11:26 AM
Tdskip
You should have spent the money on a set of Petro... Dec 10 2018, 12:59 PM dr914@autoatlanta.com If you have a powered dwell meter red to positive ... Dec 10 2018, 01:55 PM Tdskip Thanks for all of the information and discussion,... Dec 10 2018, 03:36 PM jcd914 On 4cyl dwell scale:
90 deg dwell is points closed... Dec 10 2018, 04:54 PM
Tdskip Thanks Jim - super helpful.
Just check the other ... Dec 10 2018, 06:25 PM |
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