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Yes, i found the answer. Truck had an aftermarket tachometer installed. 2nd truck this tach has been on. After 320,000 mi. on this tach, something in the wiring or internals failed. Unplugged the tach, truck fired right up. Check those aftermarket accessories you installed, before finding fault with the factory stock vehicle.

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Q: 94 F150 4.9L will not start New spark plugs Fuel pumps are working?
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