Re: [GMCnet] no spark on HEI [message #323718 is a reply to message #323702] |
Sun, 10 September 2017 17:09 |
rvanwin
Messages: 325 Registered: April 2007 Location: Battlefield, MO
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Gary Worobec wrote on Sun, 10 September 2017 13:19Hi 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.
Gary,
The module would be the first thing to try. Any module from the parts store should work OK. I have seen some aftermarket modules (other than AC Delco) not work properly for limp home but would work under normal conditions. Modules that DickP uses are not immune from having problems. Keeping a spare module is necessary in my opinion. If the module doesn't resolve the issue, then possibly the coil.
Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
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