Where is number one cylinder on the distributor a Ford F350?

On a Ford F350, the number one cylinder location on the distributor cap depends on the engine's firing order. Ford F350s have used various engines over the years (V8s and V10s are common). You cannot determine the #1 cylinder location solely from knowing it's a Ford F350.

To find the #1 cylinder location:

1. Identify your engine: Find the engine's displacement (e.g., 5.4L, 6.8L, 6.0L Powerstroke) and year. This is crucial.

2. Find the firing order: Look up the firing order for your specific engine. This is usually found in your owner's manual or online through a reliable source like a Ford repair manual or a reputable automotive website. The firing order will be listed as a sequence of numbers (e.g., 1-3-7-2-6-5-4-8 for a V8).

3. Locate the #1 spark plug wire: Once you have the firing order, follow the spark plug wire coming from the distributor cap terminal corresponding to the "1" in the firing order. That wire leads to the #1 spark plug. The position of that wire on the distributor cap indicates the #1 cylinder location on the cap itself.

Without knowing the specific engine in your F350, any answer would be pure guesswork and potentially lead to misdiagnosis or damage.