No spark?
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Senior User
Joined: Dec 2008
Posts: 193
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From: St Charles, Mo
No spark?
Here is my issue, my 1977 F150 with 400, auto. Trucks been sitting awhile and before I fixed fuel delivery it would start and run for a second before the fuel went away(poured some gas down the carb). After I have sorted out the not getting any fuel issue ( rebuilt carb, new filter and new fuel pump). Now it cranks over but won't fire. It sounds like no spark. Check power to the little horse shoe clip on coil and there was power. But no spark from coil. Dead coil? or where do I need to start looking?
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
If you're using a DVM it typically won't or can't register quickly enough to measure the pulses you want to see----the test light would.
Cranky Old Guy
Joined: Mar 2008
Posts: 3,562
Likes: 6
From: Raphine, Virginia
The pickup coil in distributor should read 400-800 ohms across orange and purple. Either one to black should read greater than 70K ohms. Coil should read .4-1.6 ohms across pos and neg, either one to output post 7700-10,500 ohms. This is for the stock Duraspark ignition.
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