Doing a google search turned up two findings for spark plug firing order.

1. Q In which order do the spark plug wires go on the rotary cap on a 84 fiero?
A Firing order on the 2.5 L L4 engine is 1-3-4-2 where do you hook up one to.... ( kinda of leaves something off at the end of the sentence.)
2. Q What is the firing order for a Pontiac Fiero 2.5L 4 cylinder?
A The firing order is 1-2-3-4-...just like the 2.8 v-6 which is 1-2-3-4-5-6

Who is right

tell us what year you have 84-86 or 87-88

Oops, thought that was in the Signature.

84 4 cyl

Anybody?

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84 Fiero, not sure about anything
86 Buick Grand National, many mods.
94 Dodge Cummins 4x4

Looking here I see what you mean, this is what I`m showing
clyinder numbers (right to left)-- (trans-axle on left)
1 2 3 4

**Front**
^^^ 4 3 2 1 ^^^^

The # 1 on the cap will be *one* post past the hold down screw nearest the rear of car .


Firing order will run, 1-3-4-2
*clockwise*

[This message has been edited by 3800superfast (edited 08-19-2006).]

That you. That is excatly what I was looking for.

I replaced cap, rotor, wires and plugs. I cannot get the intial timing set to get it started. The #1 wire is set just past (clockwise) the lower retaining screw on the dist cap. I set the crank for the notch on the pulley to the first tab on the timing tab. The rotor points at about 4 o'clock. But will not fire over. I verified spark and can smell gas in the exhaust. How do set the dist to get it started? I have a timing light once it starts I can adjust the dist.

[This message has been edited by 8uwav6 (edited 08-20-2006).]

If you rotate the engine over one more time the rotor should be pointing about 10 o'clock, and be on the compression stroke. Stick your thumb over the #1 cylinder plug hole as you rotate the engine over and you should feel pressure push your thumb off as the piston comes up on the compression stroke.

According to a TSB about #3 wire abraiding on a core plug (tape a piece of plastic wire loom over the plug wire in that area) the #1 plug tower should be there in the 10 O'clock position. Firing order is listed as 1-3-4-2 (clockwise) but the diagram in the TSB is labelled such that it would be 1-4-3-2. I suspect they labelled the picture wrong.

Good luck. BTW to set timing follow the emissions sticker... probably 4, 8 or 10BTDC with a tan/black wire unplugge.