Question about 1985 GMC Jimmy

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I unplugged the spark plug caps on the distributor of my 1985 2.8 liter gmc jimmy unknowing that I didn't have the firing order. What is the firing order and in which direction does it go? and which position does it start from?

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1-2-3-4-5-6 With numbering going down the passenger side (looking front to back)1-3-5 and down the drivers side 2-4-6. The rotor spins clockwise with #1 almost straight front .

Posted on May 26, 2011

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1 Answer

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Firing orders are available at this website:
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zeevert_56.jpg This is as big as FixYa allows. If you can't read the color code, try to get the original yourself.

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I need a spark plug wire diagram for a 1985 gmc jimmy 350 engine


Most all Chev or GMC v8 engines use the firing order of 1-8-4-3-6-5-7-2. You have to find where #1 is on the distributor cap which is usually closest to #1 cylinder then looking toward the back of the engine go clock-wise to install the rest. Don't get too close to the headers. Plastic melts!

Dec 02, 2010 | 1985 GMC Jimmy

1 Answer

We changed spark plugs & wires on our 1991 GMC & seem to have the order wrong on the distributor cap because truck won't start. need diagram


Here is the firing order diagram for the 5.0 liter (305), 5.7 liter (350) and the 7.4 liter (454) V-8 engines (note position of locking latches/screws between the 3 and 6 and the 1 and 2 terminals on the distributor cap). Let me know if you need the 4.3 liter V-6 engine diagram (hopefully not in a 2500 series truck) or if you require any further assistance.




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Nov 28, 2010 | 1991 GMC C2500

1 Answer

I need the firing sequence on the 1994 GMC Sonoma from spark plugs to the distributor cap. My brother got the wires mixed up...he doesn't know where the wires go.


Here is the firing order diagrams for the 4.3 liter V-6 engine and the 2.2 liter 4 cylinder engine, and let me know if you need any help to understand these diagrams, or if you require any further assistance.

4.3 Liter V-6 Engine.


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2.2 Liter 4 cylinder engine.


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3 Answers

I NEED THE DISTRIBUTOR CAP FIRING ORDER FOR A 1985 OLDS. CUTLAS V6.


1985 Oldsmobile Cutlass Salon 3.8 liter V-6

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Hope this helps.

Aug 17, 2010 | 1985 Oldsmobile Cutlass Salon

1 Answer

What is the spark plug firing order on 2.8 GMC Jimmy?


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!

Apr 21, 2010 | 1988 GMC Jimmy

2 Answers

Spark plug order to distributor


For a 1985 Chevy S10 with a 2.8L engine the firing order is: 1-2-3-4-5-6 The Distributor rotation is clockwise.Take off the cap and bump engine till the rotor points to the no. 1 plug. this is the no.1 contact on the cap. follow rotation around the cap in order. {ie. 2,3,4 ect.} hope this helps.

Oct 12, 2009 | 1985 Chevrolet Chevy

1 Answer

1990 GMC jimmy 4.3 liter v6 is Being a ****


check to see if you have your plug wires at the right location on distributor cap. If you don't have a digram they are as follows- right side 1, 3, 5 front to rear. Left side is 2,4,6 front to rear. #1 should be on the location at front of cap closest to intake manifold. firing order is 1,2,3,4,5,6. Hope this helps. KS

Mar 20, 2009 | 1990 GMC S-15 Jimmy

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