Firing order-

Jeffb · Sep 7, 2003

Howdy- Folks
I'm green on this site, but I think I'm gonna like it! Some really neat info and knowledgable folks here!!!! I've a pretty dumb question and am almost ashamed to ask it, but- What is the firing order on the coil pacs on a 95 SLS? My wires are not marked, and I want to change them and the plugs ( If I can figure out how to get to them!) O/W the Northster is a great engine, IMHO.
Thanks
Jeff

AKPsiMC03 · Sep 8, 2003

i dont know the order... but to get to them, just take the plastic cover off the top of the motor.

Jeffb · Sep 8, 2003

Well, sorry to sound so dumb, but I know how to get to the wires- what I don't know is how to get to the back plugs, and neither do I know the firing sequence. i.e- from left to right, looking from the front, in what order do the wires go to the plugs?

AKPsiMC03 · Sep 8, 2003

to get to the back, there are 4 bolts holding the coil pack thing on, unbolt them, and disconnect the lead ires to the packs. then you can look rught back and see them, its actuallt quite easy. this car was the fastest plug change i ever did.

Katshot · Sep 8, 2003

Hopefully, this is what you're looking for.

AKPsiMC03 · Sep 8, 2003

Katshot said:
Hopefully, this is what you're looking for.

that pic doesnt look right... i could have sworn that #1 was the passenger side rear.

Katshot · Sep 8, 2003

It IS. The coils are shown on the rear bank in the diagram.

Jeffb · Sep 9, 2003

Katshot- That's it!!! Thanks a lot

Jeffb · Sep 9, 2003

You the MAN!!! I'll pull the coil pac thingie and hopefully get the plugs- Thanks

Katshot · Sep 9, 2003

We aim to please Jeff.

Jeffb · Sep 11, 2003

ACKsiMco3
You are right- easiest plug change I've ever done--!!!
Thanks a lot for the info- I'd never figured out how to get to the plugs!
Jeff

Jeffb · Sep 11, 2003

Katshot- the diagram was great- 20 minutes and the plug change and wires done!!! Thanks!

Katshot · Sep 11, 2003

You're welcome.

Chuck C · Sep 11, 2003

isn't there a firing sequence list ethced (raised letters actually) somewhere on the motor? I could have sworn I saw this while cleaning under the hood one day.

Katshot · Sep 11, 2003

I know many engines have the firing order cast into the intake manifold but I'm not sure if the Northstar has it anywhere. Just for your info though, the firing order is as follows:
1-2-7-3-4-5-6-8
It is unique to the GM engine line which generally uses the standard 1-8-4-3-6-5-7-2

AKPsiMC03 · Sep 11, 2003

Jeffb said:
ACKsiMco3
You are right- easiest plug change I've ever done--!!!
Thanks a lot for the info- I'd never figured out how to get to the plugs!
Jeff

you're welcome

El Dobro · Sep 13, 2003

I ran out to the garage to check for the firing order on the Allante. It's cast onto the end of the rear cam cover of the Northstar engine, on the passenger side of the vehicle.

elwesso · Sep 13, 2003

Katshot said:
I know many engines have the firing order cast into the intake manifold but I'm not sure if the Northstar has it anywhere. Just for your info though, the firing order is as follows:
1-2-7-3-4-5-6-8
It is unique to the GM engine line which generally uses the standard 1-8-4-3-6-5-7-2

Good ol 18436572....... Oh man, that brings back memories from redoing the plugs on a boat.......!

I wish it only took me 20 mins to do the plugs....... Took me 5-6hours........

Firing order-

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