Question about 1983 GMC C1500

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Firing order 1955 gmc 100

I am looking for the firing order for a 248 straight 6 cylinder in my 1955 gmc 100 truck

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I have a 54 bel air customer brought in for me to install engine, but I do not know the firing order or the mark on distributor cap, could you please let me know what they are please, thank you very much. It is a straight 6.

Posted on Nov 21, 2008

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Posted on Jan 02, 2017

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2 Answers

Starting point for firing order


Starting point is always cylinder 1, on straight engines at the front, on V engines front left. The gear wheel or crank sensor will register at TDC or just before. TDC can be found with a pencil inserted in the spark plug hole of cylinder 1
So for a 4 cylinder engine it's 1,3,4,2
6 cylinder straight, 1,3,5,6,4,2,
Cant remember the v engines but it's always left right etc.and from end to centre.

Apr 22, 2017 | GMC Cars & Trucks

1 Answer

Firing order on a 2000 gmc Sonoma v/6


Shelia, 2000 gmc Sonoma v/6 Firing order, firing order for the 4.3L engine is 1-6-5-4-3-2.
Cylinder order drivers side 1-3-5 and passenger side 2-4-6,
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

4 3L firing order 1982 2005 Chevrolet 10 Blazer GMC S15 Sonoma Jimmy
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2000 gmc Sonoma 6 Firing order Google Search

Aug 20, 2016 | GMC Sonoma Cars & Trucks

1 Answer

What is the cylinder order in a 2002 GMC Envoy - straight 6- 4.2 ltr


the front of the engine is number 1 cylinder in most cases if u want to check youre's get the 2 back rocker arms rocking when u have done this the rotor button should b on number 1 on you cap cheers hi firing order is 153624................cheers

Sep 12, 2015 | GMC Cars & Trucks

2 Answers

What is the firing order for a 2003 gmc envoy V6?


FIRING ORDER FOR 4.3L 1 6 5 4 3 2 IF YOU HAVE 4.2L INLINE 6 CYLINDER ENGINE FIRING ORDER IS 1 5 3 6 2 4

Jul 21, 2011 | 2003 GMC Envoy

1 Answer

Whats the firing order diagram for a 2004 envoy 4.2 connected to a obd it says number 3 cylinder not firing need to know which plug?my son replaced several not all! hard to get 4.2 straight 6 cyl


The number 3 plug is the third one back from the front of the engine. They are numbered in order 1,2,3,4,5,6 front to back, this is the cylinder numbers not the firing order. Firing order is 1-5-3-6-2-4 .

Jan 16, 2011 | 2004 GMC Envoy

2 Answers

WHAT IS THE firing order on a 1996 GMC sonoma v6 pickup truck


Here is the diagram with the firing order and cylinder layout.


emissionwiz_20.gif

Dec 28, 2010 | 2003 GMC Sonoma Extended Cab

2 Answers

Spark plug wiring firing order to distributor cap


For the 1988 GMC K2500:
I do not know if you have the 4.3L V6 or the 5.0L, 5.7L or 7.4L V8's however I have included all below:


For the 4.6L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
......(back)........
'...6...........5...'
'...4...........3...'
'...2...........1...'
.......(front)
Distributor:
......(back)
(+) - screw
..........4
....................3
5
.....................2
....6
.............1
.....................(+) - screw


For ALL V*'s (5.0L, 5.7L and 7.4L)
Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
.......(back)........
'..8..............7..'
'..6..............5..'
'..4..............3..'
'..2..............1..'
........(front)
Distributor Connections:
.....(back)
.....6.....5
3...............7
4...............2
.....8.....1
.....(front)
Rotation:
Clockwise

Sep 24, 2010 | 1988 GMC K2500

1 Answer

Ned to now wat the firing order for dist cop shood be for a 1987 ford f100 pick-up truck 300sixcylender stick shift model#333


The F100 ended in 1983, so there is some confusion on your 1987 Ford F100. The F150 started in 1983 and was available in 1987, but not the F100. You have this listed under the 1981 Ford F100 category.
The 300 CID = 4.9L In-Line (Straight) 6-Cylinder.
In order to best answer your question I have included both the 1981 F100 4.9L and 1987 F150 4.9L below. The only difference is with the Distributor Cap Configuration and Connections.

For the 1981 F100 300cid=4.9L:
Firing order:
1-5-3-6-2-4
Cylinders:
(back)
...6
...5
...4
...3
...2
...1
(front)
Distributor:
...(back)
.........4..[.]-clip
2
...................1
6
................5
[.]....3

For the 1987 F150 300cid=4.9L:
Firing Order:
1-5-3-6-2-4
Cylinders:
(back)
..6
..5
..4
..3
..2
..1
(front)
Distributor:
.......(back)
.................4
.....2
[.]
.......................1
..6
.........................[.]-clip
....................5
.......3
.........(front)

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

May 07, 2010 | 1981 Ford F 100

2 Answers

Need firing order for 1995 gmc jimmy


For the 4.3L (6Cyl)
Firing Order:
1-6-5-4-3-2

Cylinders:
(back of engine)
| 6 |---------| 5 |
| 4 |---------| 3 |
| 2 |---------| 1 |
(front of engine)

Distributor:
...(back)
(+)..4...3
.5...........2
....6...1..(+)-screw
...(front)

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

Mar 04, 2010 | 1995 GMC Jimmy

1 Answer

Ford f150 1986


The firing order for the 4.9 L engine is 1-5-3-6-2-4, with the firing order rotation on the distributor cap going clockwise. For the 5.0 & 7.5 L engines, the order is 1-5-4-2-6-3-7-8, and the 5.8 L engine is 1-3-7-2-6-5-4-8. On all three of these engines, the distributor cap firing rotation is counterclockwise. Also, on the six cylinder 4.9 L engine, the cylinders are in a "straight six", with #1 cylinder starting in front, and going in order straight back to #6. The eight cylinder engines' cylinders all fire in order also, (standing in front of the vehicle looking back towards the firewall) with #1 being front on your left and going straight back to #4, and then #5 being at front right, going straight back to #8, with the distributor being front and center. Hope this helps you out.

Aug 13, 2008 | 1986 Ford F150 SuperCab

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