For the 1988 GMC Jimmy 2.8L V6:
Firing Order:
1-2-3-4-5-6
Cylinders:
.......(back).......
|..5..|........|..6..|
|..3..|........|..4..|
|..1..|........|..2..|
.......(front)
Distributor:
.....(back)
.....3.....4..(+)-screw
2..............5
(+).1.....6
Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!
SOURCE: firing order 95 gmc jimmy diagram
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SOURCE: 1991 4.3L GMC Jimmy S-15 will not start. Turns
You need 3 things.
Compression
Good hot blue spark to all plugs.
Good gasoline and proper fuel pressure. 13-13.5 lbs on your TBI
If you have all 3 then move on to injector pulse to both injectors.
Keep me posted and recheck your spark plug wire to make sure they are not crossed. firing order 1-2-3-4-5-6 cylinder # passenger side 1-3-5 front to back. cylinder # drivers side 2-4-6 front to back
distributor #1 is located at the 7 o"clock and rotates clock wise so next distributor post on the right working clock wise is #2. Good luck and hope this helps.
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