Question about 1987 Pontiac Fiero

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Spark Plug Gap for 1987 Pontiac Fiero

I have a 1987 pontiac fiero 4 cylinder automatic I want to know what I should have my spark plugs gapped to for factory standard.

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I believe in that era G.M.had what they called their H.E.I. and it was .060, check on radiator top or in engine compartment or its in the owners manual or better yet call a G.M.. dealer they'll know for sure

Posted on Sep 26, 2009

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Posted on Jan 02, 2017

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I need a firing order diagram for a 1987 pontiac fiero


1987 Pontiac Fiero
2.5 liter L492717859.gif 1987 Pontiac Fiero
2.8 liter V-641894283.gifPlease rate this help.....Notice there is v6 and 4 cyl makesure you get the write one

Nov 30, 2010 | Pontiac Fiero Cars & Trucks

1 Answer

1987 pontiac fiero spark plug firing order fron distributor to spark plugs


Hi,

The firing order is - 1 2 4 5 6

taran_2005_2.gif

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Nov 26, 2010 | 1986 Pontiac Fiero

1 Answer

I have a 87 fiero L4 4cyl standard 5 speed manual tansmission.idle is rough and real bad when you come up to a stop and push the clutch in and let of the gas pedal. it cant find a steady rpm and it goes...


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

Jan 11, 2018 | 1987 Pontiac Fiero

1 Answer

Do you know plug wire line up for a 1995 pontiac fiero 2.3


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!

Jul 09, 2010 | 1985 Pontiac Fiero

1 Answer

Whats the spark plug gap for a 1986 fiero 6???/ i reallt need to know i had spart plus put in but my car just got wrose so they really werent the right one i thin or the last 2 i put mayb the ones that...


.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

May 19, 2010 | 1986 Pontiac Fiero

1 Answer

Spark plug gap settings


I show .060 for a 1985 Pontiac 2.5 EFI.

Apr 25, 2009 | Pontiac Fiero Cars & Trucks

1 Answer

1987 pontiac fiero 4 cyl does not start, over fueling


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

Mar 02, 2009 | 1986 Pontiac Fiero

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