Posted By: flyman
weird spark ? - 09/21/14 02:22 PM
I was helping a buddy work on his 1975 ram charger. It only was spark when you turn the ign on and then again when you turn it off. It has no spark when turning the engine with the starter. I swapped the ign box with a known good one, and bypassed the ballist resistor. On change on either one. Pickup coil on the dist? Thanks for your help
Posted By: Crazy68Dart
Re: weird spark ? - 09/21/14 02:53 PM
This a new build or was it working/starting fine and he started having issues?
The ignition switches typically have an ign1 and ign2, one is for "run" and one is for "crank".
Posted By: flyman
Re: weird spark ? - 09/21/14 03:07 PM
It was running driving good. Then it started to quit when hot but always restart when cooled off. Now no start at all.
Posted By: buildanother
Re: weird spark ? - 09/21/14 03:42 PM
You did verify that the distrib is turning, right?
Posted By: flyman
Re: weird spark ? - 09/21/14 04:10 PM
Thanks for your help. I have not checked for dist turning yet. Last it was driven was to the auto parts store, when he tried to leave no start?
Posted By: Red 79
Re: weird spark ? - 09/21/14 04:47 PM
For what it's worth, I had the same problem with my 79 D-100 years ago. It was in fact the dist. pick-up. I did a resistance test with an ohm meter at the dist pig tail that confirmed it was dead. The readings when checking at the pig tail should be between 150 - 900 ohm or another way is connect one meter lead to the pigtail and ground the other, if the meter shows any reading the pickup is bad.
Posted By: flyman
Re: weird spark ? - 09/24/14 12:36 AM
Well I did a little more diggen and found the dist does not turn. Neither does the cam gear when looking thru the fuel pump hole. So it looks like on to the timing gear!! Any one seen a failure like that before?
Posted By: stumpy
Re: weird spark ? - 09/24/14 04:41 AM
Might have the plastic coated timing gear and they strip quite often. If that is what it is then you need to flush all the plastic pieces out of the oil pan or they will clog the pump pick up and you get no oil pressure.