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Reply to "Holley carburettor adjustment needed"

@dipascale posted:

as Rocky, if the firing order is OK and if there are flames in the exhaust, I will rather opt  for a lack of advance.

... OR an exhaust valve or valves not seating. What type of camshaft is installed in the engine? Is it a solid lifter or hydraulic lifter?

302 Fords have a history of spark plug wires #7 and # 8 cross firing to the extent that the Ford Engine Assembly Manual shows that they must be separated in the wiring loom on the valve cover. Other Ford engines are not immune from that issue as well.

A problem with the distributor cap such as a crack or the wrong rotor is not out of the question also.

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