Firing order please Guy’s

[steve anning]

I have just changed my HT leads and lost track of were they go in the Distributor cap

Can you advise?

I beleive the Firing order on the cylinders are from the Radiator 1 2 4 3

The 7 is a 1989 ford xflow 1700 with a brown Distributor cap which has 4 lead sockets which all are horizontal in a half moon configuration ie

o o

o o o

 

 

[Tony C]

If my memory serves; the cylinders are numbered 1 to 4 from the front and the firing order is 1342.

Tony

 

 

Edited by - Tony C on 14 Dec 2002 16:18:50

 

Edited by - Tony C on 15 Dec 2002 05:25:18

[Harvey]

1-2-4-3

 

Auto testing-the way forward/backward

[Tony C]

1-2-4-3 is 1342 backwards!

Tony

[Nigel Riches]

Crossflow firing order 1-2-4-3.

[John E]

😬 1-2-4-3 😬

[terry b]

Firing order is 1243. But do you know where no.1 is on the cap? To find this you need to get the valves on no.4 rocking,to give you no.1 firing position. Look at rotor arm to see where it is pointing to .This is no.1 on the cap.

 

t.buss

[J.R.]

Firing order is 1,3,4,2. with the engine rotating clockwise viewed from the front.

 

The distributor rotor rotates anti-clockwise due to the spur gear.

 

This results in the conflict of views.

 

Looking at the dizzy cap it is 1,3,4,2 in the correct ANTI-CLOCKWISE rotation

 

Or 1,2,4,3 if you choose to look at it in the incorrect clock-wise direction.

 

As mentioned before with the crank at TDC on cylinder one the engine could be on the firing stroke of both cylinders 1 and 4, look at the valves on the opposite cylinder to confirm. Rocking on one = firing on four and vice-versa

[Peter Carmichael]

In answer to Tony's question on Chitchat, the firing order is determined by the camshaft and by nothing else. Most engines stick with a convention, but it would not be impossible for an aftermarket camshaft to change the firing order from 1-3-4-2 to 1-2-4-3 or vice versa...

[Roger King]

Good point there Peter.

 

Most four cylinder engines run 1342, but the Crossflow is unusual in using 1243. This makes no practical difference to the operation of the engine, but it is a slight oddity. Curiously, the BDA, which is Crossflow based runs 1342.

[Tony C]

What an up-cock.

JR says 1342 and Roger 1243.

I guess Roger should know!

Indeed, it doesn't really matter as the same firing interval on the crank is present in either case.

Oh well. I checked the www today and there are several engines whose firing order is 1243.

Tony

[YW Sin]

I am surprised to learn that there is an X-flow engine with, 1-3-4-2 Firing order. Thanks to Roger King.

 

Going back to the point, the firing order of Cross flow engines are 1-2-4-3 ! God, how many times have I said this~~~~.

 

This rather obious fact is re~~~y making a stir. Its ~~~ your fault Steve! 😬

 

~~~ standard 1.7 X-flow