What order do the spark plug wires go on a1974 Cadillac Deville

Question edited for clarity, "spark puck", you mean 'spark PLUG'.
Question moved to model category.

ANSWERED: ignition firing order (Cadillac DeVille) - CarGurus

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2 answers
The Cadillac Northstar engine firing order is: 1-2-7-3-4-5-6-8. Standing in front of the hood of the car, the front bank, the one closer to you will be from ...

It sounds like the firing order may be off. Make sure that you re-connected the ignition wires in the correct sequence.

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Some cars have a plastic snap/finger and loop locking arangement that needs to be undone so you can open the plastic "tunnel" that plug wires are routed through. A picture of what you are dealing with would help as there are so many different cars and designs.

Hope this helped,
Ken C

Do you mean the firing order?

Usually, if you only have 1 cylinder misfiring, you have either a bad spark plug or bad spark plug wire. If you replace the cylinder 6 spark plug and still have a misfire condition, replace your spark plug wires. If replacing the plug and wires doesn't fix the problem, replace the ignition coil.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

I would start by getting spark plugs and spark plug wires. And find out (through part store)what the gap is for your plugs.Then i would replace the cap and rotor and check your air filter. If you have over 60,000 miles i would also change the trans.filter and fluid




Spark plugs
Spark plug wires
Distributer cap
Rotor (if applicable)
Air Filter ?

With your hood open, look for several large and long (probably black) wires. Follow these (ignition) wires to your engine block. Where each wire ends you will find a spark plug.

The following 2001 Cadillac DeVille owners manual should help.

http://pdfcast.org/pdf/2001-cadillac-deville-owner-8217-s-manual

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FIRING ORDERS NOTE: To avoid confusion, remove and tag the spark plug wires one at a time, for replacement. If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired. Fig. 1: GM (Cadillac) 250 (4.1L) V8 GM (Cadillac) 273 (4.5L) V8 Engine firing order: 1-8-4-3-6-5-7-2 Distributor rotation: counterclockwise Fig. 2: GM (Oldsmobile) 307 (5.0L) V8 GM (Oldsmobile) 350 (5.7L) V8 w/EFI Engine firing order: 1-8-4-3-6-5-7-2 Distributor rotation: counterclockwise Fig. 3: GM (Buick) 252 (4.1L) V6 Engine firing order: 1-6-5-4-3-2 Distributor rotation: clockwise Fig. 4: GM (Cadillac) 368, 425, 472, 500 V8 Engine firing order: 1-5-6-3-4-2-7-8 Distributor rotation: clockwise Fig. 5: GM (Cadillac) 429 V8 Engine firing order: 1-8-7-2-6-5-4-3 Distributor rotation: clockwise

if it is a v-8 the firing order is 18436572 number 1 is the first plug on the l/s follow that wire back to dist cap and then go clockwise in the order above the left bank is 1,3,5,7 and the right is 2,4,6,8