| Re: [GMCnet] no spark on HEI [message #323722 is a reply to message #323702] |
Sun, 10 September 2017 17:35   |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
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Senior Member |
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Gary,
What I haven't heard is what type of Patterson distributor you have. If
it's controlled by the EFI/EBL, then it's certainly one with a 7-pin OEM
type HEI. If it's NOT controlled by the EFI's ECM, then it may be the
original '73 points-type upgraded by Dick P. with a Pertronix 1181 kit.
Or, it may be a non-computer-controlled HEI with a 5-pin module. There may
even be other configurations with which I'm not familiar.
You've got to determine which of those you have before searching for a test
replacement.
Ken H.
On Sun, Sep 10, 2017 at 2:19 PM, Gary Worobec wrote:
> Hi folks,
> Tried to fire up the coach this morning and lots of gas, no spark.
> Admittedly I have not run it for a couple of months now. 455 with Howell
> EFI/EBL and a Paterson HEI distributor. All the fuses are good in the
> Howell and no obvious wiring damage from rodents. I’m leaning towards the
> ignition module, however no spare. I’m not on the road so no problems
> there. I’m not sure if Dick Paterson’s modules are special or just stock GM
> parts. If not I’ll get one from NAPA tomorrow. I did send him an email.
> Does anyone know if you can run a diagnostic off of the EBL and the laptop
> to narrow the issue down. In near 12 years this is the first time the motor
> has not fired up with the EFI/HEI setup. Usually a couple of seconds on the
> starter and away it goes.
>
> thanks for any insights.
>
>
>
> Gary Worobec
> 73 Glacier 455
>
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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