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Need firing order diagram for a 1998 gmc sierra 1500 5.7L motor 350 vortec

I changed spark plugs, wires, cap and rotor. now the truck makes a cranking noise when i try to start it.

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Firing Order Diagram

the firing order is
1-6-5-4-3-2

Posted on Aug 06, 2008

  • 180 Answers

SOURCE: firing order on the distribtor cap on a 1988 350 chevy engine

18436572

Posted on Jan 01, 2009

Caesarfix
  • 141 Answers

SOURCE: 4.3 L vortec firing orcer and wiring diagram

you need the firing order?? it is 1, 6, 5, 4, 3, 2 clockwise. Number one on cap is forward position, or 6 o'clock position, just left of the hold down bolt.

Posted on Jan 22, 2009

  • 66 Answers

SOURCE: spark plug wiring diagram

I dont understand why you would need that unless you took off all the wires and took out all the plugs and forgot how the wires were.I have the same truck and I always do the plugs and wires one at time to make sure I make a mistake.If this is your ploblem let me know because i might be able to walk you though it.

Posted on Jan 22, 2009

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1 Answer

I mixed up my spark plug wires i changed the distributor cap and rotor and spark plug wires but i mixed them up can any one help me


You can google the engine size and "firing order" to get a drawing or photo of the firing order online.
Example - - 1990 GMC 350 firing order diagram

Dec 19, 2012 | GMC Sierra Cars & Trucks

1 Answer

Need firing order diagram for 1995 gmc sierra


hi laurie.....

firing order is 1-8-4-3-6-5-7-2. #1 usualy points to the #1 cylinder thats front driver side of engine On the cap. Remove the number 1 spark plug and have someone crank a little unitl you hear/feel air. The possition of the rotor is where your number 1 is, go Clockwise to place the wires in the correct order.

Here is the diagram: images?q=tbn:and9gcrlxaayk0x2gjece0bz4zizh4_densstfyqk3qq3bk2iqm56p6nfg

May 21, 2011 | GMC Sierra Cars & Trucks

1 Answer

I have a 98 350 vortec engine rebuilt it will not start I get a couple pops I replaced the ignition control module Auto Zone said the coil was good. I crank the engine still won't start so I take 2 plugs...


Do you have spark at the plug end of the plug wires?Have you double checked the firing order is correct? If you are sure it is correct 1,8,4,3,6,5,7,2 ,then you will need to check the ignition timing,if that seems good then you may have to get into it a little and check the cam /valve timing..Hope this helps !

Jan 28, 2011 | 1998 GMC Sierra

1 Answer

I took all the wires off on my gmc 1500 4x4 with a 350 in it and i cant get it set bak right i need a diagram


take the distributor cap off and remove the spark plug from #1 cylinder. put a piece of plastic bag slightly in the #1 cylinder wheny you turn the engine over just bump the starter and listen for the air and the plastic to start blowing out. now look at the position of the rotor that is where #1 cylinder wire goes.(make sure the piston is at the top or check the timing mark on the harmonic balancer it will be on the tdc 0 mark. look at the intake it will have the firing order on it. The ignition rotor turns clock wise that is the order that it fires the next wire on the distributor will go to the next number in the fire order cast
on the intake manifold turning clockwise.

Dec 11, 2010 | 1995 GMC Sierra C1500

1 Answer

I need a diagram for 1994 gmc 1500 4x4 5.7 plug wires at distributor i knw the engines fire order


if you know the firing order, then get #1 on TDC, and then take the cap off, the rotor should be pointing forward, thats where number 1 wire should go.

Dec 05, 2010 | 1993 GMC Sierra K1500

1 Answer

I atempted to do a complete tune-up on my GMC 1500 k sierra 4x4 5.7 liter vortec motor "350" I did if not one thing wrong, but several, This may sound like it is coming from a *******, but oh well, maybe...


Here is the firing order diagram for that engine, and let me know if this does not solve your problem or if you require any further asistance.


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Oct 26, 2010 | 1998 GMC Sierra

1 Answer

What is the fireing order for my 1995 gmc 1500 with 5.7


firing order is 1-8-4-3-6-5-7-2. #1 usually points to the #1 cylinder that's front driver side of engine On the cap. Remove the number 1 spark plug and have someone crank a little until you hear/feel air. The position of the rotor is where your number 1 is, go Clockwise to place the wires in the correct order.

Oct 17, 2010 | 1995 GMC Sierra

3 Answers

How do i set timing on 1998 chevy truck 350 vortec


number 1 plug wire should be pointing towards the front drivers corner . drivers side piston order is 1-3-5-7 front to back .passengers side front to back is 2-4-6-8 then the firing order is 1-8-4-3-6-5-7-2 . if you pull the # 1 spark plug and put your finger in the hole /remover power wire while doing this at the dist.bump the engine when you feel a rush of air that's the compression stroke when the piston is at the top of it's compression stroke . pop the cap look to make sure the rotor is pointing at the # 1 piston roughly and place cap back on so the # 1 terminal is over the wire end of the rotor contact tip and work clockwise around with the firing order and hope this helps .if it still dont want to run then you may have jumped timing chain or stretched they will jump out of time and cause a headache.

Nov 06, 2009 | 1998 Chevrolet K1500

2 Answers

Firing order on 1996 gmc sierra 305


Firing order is 1-8-4-3-6-5-7-2. #1 usualy points to the #1 cylinder thats front driver side of engine On the cap. Remove the number 1 spark plug and have someone crank a little unitl you hear/feel air. The possition of the rotor is where your number 1 is, go Clockwise to place the wires in the correct order.

Have a good day ahead!

Jun 24, 2009 | 1997 GMC Sierra

2 Answers

Firing Order Diagram


the firing order is
1-6-5-4-3-2

Jul 23, 2008 | 1991 GMC C1500

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