I need to know firing order for '95 sierra

gmcer · 04-04-2005, 12:23 AM

I just replaced the spark plugs and wires and thought I had put the wires back on the same way I took them off. My truck misses now and backfires a little bit. I believe I just messed up on a couple of the wires and did not put them in their right place. Anyone know how the wires go or where I can find a drawing or something for the firing order and what wire goes where? Thanks.

chevynut · 04-04-2005, 07:22 AM

18436572 with #1 being on drivers side

gmcer · 04-04-2005, 03:35 PM

ok i got that but still does'nt work. I'm guessing owner before me had the distributor replaced. So what's the easiest way to find out which point on distributor cap is #1?

gmcer · 04-05-2005, 07:02 AM

found number one is number one but when I started the truck it was still missing just a bit so I just switch number 5 and 7 with each other and now it runs like a champ! Don't know why this is but even though the correct firing order was suppose to be
18436572 the one that worked for my truck was 18436752. If anyone has any idea why this is please fill me in.

chevynut · 04-05-2005, 07:08 AM

only way or best way I know is to pull #1 plug,have someone bump starter while holding finger over plug hole in head till you feel the cylinder come up on compression stroke,you will want to do this will engine is cool and bump it over with quick swith cycles so engine dosen't start,when you get #1 up on compression stroke,remove cap and rotor should be pointed to #1 plug wire,need to know rotation rotor turns also,been a while since we checked one?

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04-04-2005, 12:23 AM	#1
gmcer Junior Member Join Date: Apr 2005 Posts: 6	I need to know firing order for '95 sierra I just replaced the spark plugs and wires and thought I had put the wires back on the same way I took them off. My truck misses now and backfires a little bit. I believe I just messed up on a couple of the wires and did not put them in their right place. Anyone know how the wires go or where I can find a drawing or something for the firing order and what wire goes where? Thanks.

04-04-2005, 07:22 AM	#2
chevynut Full Member Join Date: Feb 2005 Posts: 33	18436572 with #1 being on drivers side

04-04-2005, 03:35 PM	#3
gmcer Junior Member Join Date: Apr 2005 Posts: 6	ok i got that but still does'nt work. I'm guessing owner before me had the distributor replaced. So what's the easiest way to find out which point on distributor cap is #1?

04-05-2005, 07:02 AM	#4
gmcer Junior Member Join Date: Apr 2005 Posts: 6	found number one is number one but when I started the truck it was still missing just a bit so I just switch number 5 and 7 with each other and now it runs like a champ! Don't know why this is but even though the correct firing order was suppose to be 18436572 the one that worked for my truck was 18436752. If anyone has any idea why this is please fill me in.

04-05-2005, 07:08 AM	#5
chevynut Full Member Join Date: Feb 2005 Posts: 33	only way or best way I know is to pull #1 plug,have someone bump starter while holding finger over plug hole in head till you feel the cylinder come up on compression stroke,you will want to do this will engine is cool and bump it over with quick swith cycles so engine dosen't start,when you get #1 up on compression stroke,remove cap and rotor should be pointed to #1 plug wire,need to know rotation rotor turns also,been a while since we checked one?