Firing order for 53 Plymouth.

[Lakermatt]

Hey everyone, I am going to get my 217 running tomorrow, and need to know the firing order for my flat head. There is no sparkplug wires and no cap, so I will be replacing all of that. Can someone send me some info I will need to get this up and running? Thanks!

[John Reddie]

Here it is 1-5-3-6-2-4. Some of the older engines had the firing order embossed on the head. Not sure about Plymouth flatheads. Good luck to you.

John R

[james curl]

You will have to take the number from the distributor with you when you go to the parts store because the cap is distributor specific. They used two different sets of points, one being a mirror image of the other and three different caps and rotors, all are distributor specific.

[Don Coatney]

Hey everyone, I am going to get my 217 running tomorrow, and need to know the firing order for my flat head. There is no sparkplug wires and no cap, so I will be replacing all of that. Can someone send me some info I will need to get this up and running? Thanks!

I suggest you go to the main web page supporting this forum and read everything there. This will give you a lot of basic information about these engines including a good list of part numbers. Well worth the read.

[Niel Hoback]

#1 should be at the 7:00 position.

[mayflower48]

The easy way to remember the firing order is: to young, to old, just right=

15, 36, 24

[54Illinois]

Order should be stamped on the head.

[T120]

that could be 14, 65, 23

Could get confusing

[TodFitch]

The easy way to remember the firing order is: to young, to old, just right=

15, 36, 24

Just remember that the pistons travel in pairs (#1 and #6 together, #2 and #5 together, #3 and #4 together). So where ever #1 is in the sequence, #6 will be in the same position on the crank and 180° out on the cam/ignition order. That means that it will be in the same position in the second half of the firing order where its partner was in the first half:: 1-?-?-6-?-?. Same for 2,5 and 3,4.

So you only have to figure out the first half of the sequence and the other half just follows.

So what is the one to fire after #1? If you want to alternate between the front of the engine and the rear so things are balanced it can only be #4 or #5. Don't know why you'd pick 5 over 4 but it seems that most 6 cylinder engines did. Everything else is now fixed and you have to have 1-5-3-6-2-4, no other choice is possible from the physical configuration of the crank and the four cycle nature of the motor.

It is probably my twisted brain, but visualizing the crank and how the pistons move is easier for me than remembering some "too young, too old, just right" nmemonic.

[Niel Hoback]

Two things are stuck in my brain; 153624 and 18436572. If you play with mopar dizzy caps for 50 years, things just stick with you.