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Ignition Firing Order

Tiny
EPETRUS
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 98,000 MILES
I need the spark plug firing order for my suburban. It is a 7.4 engine.
Friday, June 6th, 2008 AT 10:45 PM

7 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
7.4/454CID


https://www.2carpros.com/forum/automotive_pictures/12900_fo_9.jpg

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Saturday, June 7th, 2008 AT 2:44 AM
Tiny
WARREN TRACY
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 16,692 MILES
Thank you for the info on the fireing order on my 99 subruban. The check engine light came on and when I checked it it gave me a code of #6 cylinder missfire,
I cleard code and it ran for 20 or 30 mls, and it came on again, so I'm checking the wires and spark plug,
if that dosent do, ware do I go from there?
I am not working so I can only send $5.00 I Hope that will do, for now

Thanks in advance
Warren
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Wednesday, December 4th, 2019 AT 8:57 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Next would be to inspect vacuum hoses for damaged or loose connections. Check throttle body and intake manifold for vacuum leaks. Also the PCV valve operation and vacuum lines. A compression check and leak down test on the cylinder will be needed if you still haven't found a fault.
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Wednesday, December 4th, 2019 AT 8:57 PM (Merged)
Tiny
BOBBY.EXUM
  • MEMBER
  • 1 POST
  • 1990 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 199,000 MILES
How do you correct the firing order for spark plug wires?
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Wednesday, December 4th, 2019 AT 8:57 PM (Merged)
Tiny
THIS IS MIKE
  • MECHANIC
  • 686 POSTS
Chevy Surburban 1500


https://www.2carpros.com/forum/automotive_pictures/46392_firing_order_chevy_suburban_1.jpg

Firing order
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Wednesday, December 4th, 2019 AT 8:57 PM (Merged)
Tiny
350 TRANS AM
  • MEMBER
  • 1 POST
  • 1987 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
I need to know the firing order for a 1987 suburban with a 350. And also the order they go on the cap. Thanks alot
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Wednesday, December 4th, 2019 AT 8:57 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Here you go, Sir


https://www.2carpros.com/forum/automotive_pictures/12900_fo1_4.jpg

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Wednesday, December 4th, 2019 AT 8:57 PM (Merged)

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