How to start the firing order on the distri butator cap

Firing order is usually found on an inlet or exhaust manifold. Take off dizzy cap and turn the engine to identify rotation direction then from #1 follow the sequence.

Never seen firing order of123456.
You should be able to find firing order with web search.

1-8-4-3-6-5-7-2

TDC on #1 compression stroke,not exhaust

Number 1 on the dist cap-- is at about 7 o clock,
as you face the motor from the front

2-4-6-8
1-3-5-7

1&2 are at the front-- as you face it

If the wires are still in the distributer, AND, if you have a stock intake manifold, the firing order is on the manifold. If it's a V-8, the number 1, 3, 5, & 7 plugs are on the drivers side of the engine. The number 2, 4, 6, & 8 plugs are on the passenger side. The number 1 plug wire can be located by looking at the distributer from the front of the engine and visually looking between the distributer and the number 1 plug. Visualize the distributer as a clock. The number one position should be located between 4 and 5 o'clock and should have the longest wire of those on that side of the distributer.

If the wires have been pulled from the distributer, then, then, remove the rotor cap, turn the engine over slowly until the rotor is pointing to the number 1 plug. Using the firing order on the intake manifold, starting with number 1, replace the wires going clockwise around the distributer.

THE 300 4.9 ENGINE FIRING ORDER IS 1 5 3 6 2 4 THE NUMBER 1 POSITION ON DISTRIBUTOR CAP IS AT 6 OCLOCK POSITION.

Try a new distributer cap and rotor button,these are notorious for wearing out the carbon pick-ups and leaving carbon tracks in the cap which messes up the fireing order.If that does'nt fix it try plugs and wires.

the firing order is usually stamped on the engine itself. Take off the distributer cap and turn the ignition to see which direction the rotor is turning.

The distributer cap has the number 1 plug marked . After finding the firing order, place the wires 1 where the cap is marked then in the direction the rotor is turning (ie:clockwise or couterclockwise). Keep looking . Most every motor I have seen has the firing order maked right on the engine.Or the owners manual ?

You can rotate the engine until #1 piston is at top dead center when it has the rotor on the distributer will point at the #1 on the cap.

Wires just pull out of the top of the cap. Do them one at a time and you won't have a problem putting them back.(they just push into each hole.)

On your Ford E 350.
Are 3 Engine sizes available. 5.0L, 5.8L and 7.5L.
On Gasoline.
The Firing Order for 5.0L and 7.5L are the same.
But diferent on 5.8L.
Here is a Picture if the firing order and cylinder number.

tHIS IS THE FIRST FIRING ORDER FOR 5.8L.
The CIRCLE mark is for the cylinder # 1 on the distributor cap.

This is for the 5.0L and 7.5L
The Circle mark is for the cylinder # 1 on the distributor cap.
The ROTOR turn Clock wise.

I hope this help on your problem.
Thank you for use fixya......