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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Ignition help

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Old Aug 20, 2017 | 12:26 AM
  #1  
Stratovarious's Avatar
Stratovarious
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Ignition help

Hi all.
I'm new here, and hoping to get a bit of help.

I currently live in a 68' Mercury 350 custom motorhome, which is the Canadian version of the Ford 350 made into a motorhome. When I bought it I put on new plugs, wires, cap, rotor, condenser, and coil.
I headed out last week, drove maybe a mile and a half, and the engine quit. Checked under the hood, found fuel (bad accelerator pump diaphragm) and a melted rotor. So far i have replaced the diaphragm as it needed it, rotor, cap, coil, points, condenser, and put in a new ballast resistor for the coil in.
My problem is I am still not getting any spark..
I have checked/tested everything I can think of and I am still getting nothing.. I even pulled the ground off and cleaned the connection there just in case.
Can someone help me out?
 
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Old Aug 20, 2017 | 12:53 AM
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matthewq4b
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Are you actually getting power to the coil with the ignition on and during cranking ?

A quick test run bat power to the + side of the coil and see if you have spark when cranking.
 
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Old Aug 20, 2017 | 02:06 AM
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Yes, I have tried that. The old power wire to the coil was pretty hard ( I figure it had gotten pretty hot a few times), so I ran a new wire from the battery to a switch to the coil to test everything.
I did a spark test off the old coil too, to see if it was working, I got a really weak spark, with the new coil I get nothing.
 
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Old Aug 20, 2017 | 02:16 AM
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If no spark hot wiring it then either a defective coil or the points are not adjusted correctly.
 
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Old Aug 21, 2017 | 11:49 AM
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get rid of those points. i just did. amazing difference.
 
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Old Aug 21, 2017 | 02:03 PM
  #6  
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Originally Posted by Stratovarious

I currently live in a '68 Mercury 350 custom motorhome, which is the Canadian version of the Ford 350 made into a motorhome.
Please ask further questions in the 1967/72 F100 and larger truck forum. This forum is for 1961/66's.
 
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