Firing order diagram

Tiny
LAVAFLOZ
  • 1998 CHEVROLET SILVERADO

V8 four wheel drive automatic 100,000 miles

I am looking for a diagram for the plug wires to the distributor cap connections. I know the firing order is 1-8-4-3-6-5-7-2. While replacing the (crab type) cap, rotor, plugs and wires, I messed up bad by not labeling the wires on the cap. The engine is a Vortek 5.7L 350. It is a K1500 4X4 automatic. Any help you can provide would be greatly appreciated. Thank you

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Sunday, November 2nd, 2008 AT 7:09 PM

22 Replies

Tiny
OBXAUTOMEDIC
  • EXPERT
  • 3,779 POSTS

Hello,

Here is the spark plug to distributor wiring diagram.


http://www.2carpros.com/forum/automotive_pictures/188069_98k1500fireorder_1.jpg



Larger version below

Please let us know if you need anything else to get the problem fixed.

Cheers

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Sunday, November 2nd, 2008 AT 7:16 PM
Tiny
LAVAFLOZ
  • MEMBER

Thank You. Just to be sure, I connected wire one to cap position one, and so on. Is this correct? The service engine light was illuminated prior to this. I hooked up my Digital OrbitII Code Reader, and it displayed P0300 - Random/Multiple Cylinder Misfire Detected. This was before I changed the wires per your diagram. I believe I need to figure out how to clear the code, and scan it again. Lastly, I noticed a strong gas smell when I fired it up, and a grayish/black smoke came out of the tailpipe. If you think I should do something else, please let me know, otherwise, I appreciate your response and help. Aloha from Hawaii!

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Sunday, November 2nd, 2008 AT 8:55 PM
Tiny
OBXAUTOMEDIC
  • EXPERT
  • 3,779 POSTS

Yes, just match up the number 2 to 2 3 to 3 etc. The smell of gas may just be do to the misfire, so complete the plug wire and see what happens. Your scanner may have a way to clear the codes check the manual for it. Post finding here.

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Monday, November 3rd, 2008 AT 12:23 PM
Tiny
LAVAFLOZ
  • MEMBER

Code cleared, no new codes. Gas smell gone, and no smole from tailpipe. All in all, everything works great! Thanks for the help! :)

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Tuesday, November 4th, 2008 AT 1:24 PM
Tiny
WATERLOVER
  • MEMBER

Why does the number pattern on the cap not match the firing order?

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Saturday, June 23rd, 2012 AT 11:31 PM
Tiny
BOYKO68
  • MEMBER

Does the diagram also apply to the 5.0l Vortec? I have a 1999 k1500 with the 305 that is putting out the same code, so if the diagram is also for the 5.0 Vortec I will check my plug wires. Thanks in advance.

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Monday, October 15th, 2012 AT 2:19 PM
Tiny
BLUEROSEZ
  • 1998 CHEVROLET SILVERADO

Engine Mechanical problem
1998 Chevrolet Silverado V8 two wheel drive automatic.

Could you give me the firing order for this truck? Because I put spark plug wires on wrong.

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Tuesday, July 25th, 2017 AT 8:02 PM (Merged)
Tiny
TEDSKI
  • MEMBER

Here is the firing order for your truck.

2, 4, 6, 8, Right Bank on the top.

1, 3 5, 7, Left Bank on the bottom.

The Distributor rotation on the right is 8 2 4 6 on on the left is 1 7 3 5.

Hope this helps you.
Tedski new person to this site.

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Tuesday, July 25th, 2017 AT 8:02 PM (Merged)
Tiny
JONLEE17
  • 1998 CHEVROLET SILVERADO

Engine Mechanical problem
1998 Chevrolet Silverado V8 four wheel drive automatic 173,000 miles.

I just changed the spark plugs, wires and battery in my pickup, now it will not start. I think I got the firing order wrong can you help?

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Tuesday, July 25th, 2017 AT 8:02 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
  • 16,945 POSTS

Sure.

For the 4.3L engines:
1-6-5-4-3-2 distributor rotation: Clockwise.


http://www.2carpros.com/forum/automotive_pictures/261618_0900c1528008ee21_1.jpg



For the 5.0L, 5.7L and 7.4L engines:
1-8-4-3-6-5-7-2 distributor rotation: Clockwise.


http://www.2carpros.com/forum/automotive_pictures/261618_2_4.jpg



Hope this helps.
Thanks for using 2carpros.com!

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Tuesday, July 25th, 2017 AT 8:02 PM (Merged)
Tiny
ANFK
  • 1998 CHEVROLET SILVERADO

1998 Chevy Silverado V8 four wheel drive automatic 210,000 miles.

What is the firing order for this truck? Thanks!

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Tuesday, July 25th, 2017 AT 8:02 PM (Merged)
Tiny
MASTERTECHTIM
  • MEMBER

I do not know off the top of my head, but look real close to the distributor cap it is marked right on it. The drivers side front cylinder is number one and pass front cylinder is number two. So drivers side is 1-3-5-7 and passenger side 2-4-6-8.

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Tuesday, July 25th, 2017 AT 8:02 PM (Merged)
Tiny
ALEX PAZ
  • 1993 CHEVROLET SILVERADO

1993 Chevrolet Silverado Six cylinder two wheel drive automatic.

Does anyone know what the firing order is on my truckit has the 4.3l engine? I also need to know the positions on the distributor cap.

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Friday, September 22nd, 2017 AT 2:23 PM (Merged)
Tiny
RASMATAZ
  • MEMBER


http://www.2carpros.com/forum/automotive_pictures/12900_fo_36.jpg

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Friday, September 22nd, 2017 AT 2:23 PM (Merged)
Tiny
CURTIS SIMMONS
  • 1990 CHEVROLET SILVERADO

1990 Chevrolet Silverado V8 two wheel drive automatic.

I have a 305 v8. Can you tell me where number one firing wire is on the distributor cap? When #1d piston is up.

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Friday, September 22nd, 2017 AT 2:23 PM (Merged)
Tiny
JDL
  • EXPERT
  • 16,353 POSTS


http://www.2carpros.com/forum/automotive_pictures/170934_90_silverado_1.jpg



Welcome to the forum. Number one, up on the compression stroke.

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Friday, September 22nd, 2017 AT 2:23 PM (Merged)
Tiny
CHUCKREN
  • 2000 CHEVROLET SILVERADO

2000 Chevrolet Silverado six cylinder two wheel drive automatic.

I need to know the engine setup to place the plug wires in the correct place.

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Friday, September 22nd, 2017 AT 2:25 PM (Merged)
Tiny
2CARPROS KEN
  • ADMIN
  • 11,075 POSTS

I have found this firing order for you (below).

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

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Friday, September 22nd, 2017 AT 2:25 PM (Merged)
Tiny
SYLVIA143
  • 1992 CHEVROLET SILVERADO
  • 143,678 MILES

Hi again, may I get the timing marks and also the firing order and the distributor setting? If I had removed the head of the truck do I still need to have it shaved? What do you recommend?
I am really sorry but I do not the engine size. I know every thing in the engine now is like faded on all the stickers. I think its a 5.7 some thing V8.

Thanks

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Friday, September 22nd, 2017 AT 2:27 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
  • 68,225 POSTS

I have attached a picture of the firing order. Let me know if it helps.

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Friday, September 22nd, 2017 AT 2:27 PM (Merged)

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