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Old 04-02-2010, 02:18 AM
bklw bklw is offline
LawnSite Member
Join Date: Mar 2010
Location: SW OK
Posts: 1
No spark form plugs

I have an Onan NHC-MS/3348C in a Ford CL-30. It ran fine till I parked it for two years. I cleaned the carb installed new plugs and such and it ran for about 4 hours. It started missing and had very little power. I replaced the plugs due to a lot of carbon on the plugs and a weak spark. It didn't help so I parked it. That was now three years ago. I recently installed a new battery, new coil, new plugs, drained the fuel and cleaned the carb. Now I have no spark at all. There are 3 wires to the coil. Red for pos, black for neg and a third wire I've forgotten which terminal it goes to on the coil. It seems to come from the relay for the starter solenoid. I tried both terminals on the coil and still no spark. I'd like to replace the ignition 'module' but can't find any parts information for it. Any suggestions on what else I could look at to get the plugs to fire or where I could find the information to replace the 'ignition module'?
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