Spark Plug Gap for 1987 Pontiac Fiero

1987 Pontiac Fiero
2.5 liter L4 1987 Pontiac Fiero
2.8 liter V-6Please rate this help.....Notice there is v6 and 4 cyl makesure you get the write one

Hi,

The firing order is - 1 2 4 5 6



Let me know,if needed further assistance.

Hope i helped you.

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For what I can see you need a tune-up

- spray fuel cleaner into the throttle body directly don't let the rpm drop too much but very close to stall. The engine must be normal temp around thermostat opening.
This part of the job needs to be done with the old spark plugs.

- spark plugs + adjusting gap of the new ones
- compression test.(no more differences between each cylinder +- 25 psi)
- clean throttle body and IAC valve.
Don't forget to change the fuel filter. That should solve your problems.
hope it helps

The Pontiac Fiero was made from 1984 to 1988
In the 84 thru 88 Fiero's they had the 2.5L In-Line 4-Cylinder or the 2.8L V6.
I have included both below

For the 2.5L In-Line 4-Cylinder:
Firing Order:
1 - 3 - 4 - 2
Cylinders:
.........(back)............
|...1....2....3....4...|
.........(front)
Distributor Connections:
..............2
...................(+)
....4
....................1
(+)
..........3

For the 2.8L V6:
Firing Order:
1 - 2 - 3 - 4 - 5 - 6
Cylinders
.......(back).........
|...1.....3.....5...|
|......................|
|...2.....4.....6...|
........(front)
Distributor:
............2
......1.........3
(+)...............(+)
......6.........4
............5

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

.045 should be about right.

when you buy spark plugs for your specific vehicle, look on the box or ask the auto parts salesperson, they should have that info

.060

Your plug gap is 0.045 in.

clean fuel injectors

I show .060 for a 1985 Pontiac 2.5 EFI.

its most likely the cpu fuel management this could cause the car to be running to rich