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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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

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

3 Answers

Spark plug gap


Notice: This engine has aluminum cylinder heads. Do not remove the spark plugs from a hot engine, allow it to cool first. Removing the spark plugs from a hot engine may cause spark plug thread damage or cylinder head damage.
Gap the spark plug, using round wire type spark plug gap gage. 


Gap Adjust the spark plug gap to 1.14 mm (0.045 in).

DO NOT coat the spark plugs with anti seize compound. Over torquing could occur and damage to the cylinder head threads may result.

If your going to use Platnum plugs, DO NOT GAP them. Just check the gap and if there not the right gap, ask for new one's with the right gap.

The metal on the PLatnum plugs, are harder and my break apart in the cylinder .

Good luck and hope this helps

May 02, 2009 | Pontiac Sunfire Cars & Trucks

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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