just tried it. I pulled the plug wires off because I couldn't get to the injector connectors without some trouble. I doesn't sound like my brother's at all on three cylinders. My brother ran his on three cylinders and it sounded like a kubota.(he had three wires disconnected) Mine sounds muffled. Could it be my timing is too advanced for only 3 cylinders?(14° BASE) You can tell it is working to pump air too. If I did pull the plugs, I would need some way of keeping dirt out of the cylinders. Breather filters? Not sure if I want to mess with it if I have to pull the plugs as I need 6 cylinder power on tap for hauling.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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