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Mopar plugs are gapped at .035, while points are .020 for /6 and .017 for all V8s. You can get a gapper at any parts store for maybe five bucks- it's just a set of little pieces of metal of the right size to stick in there. You need the kind that are a thin strip of metal- the disk kind you can use for plugs won't work because you can't fit it down in there.
Those are as easy as they come these days.
Mark each spark plug wire with a piece of tape with the cylinder # written on it, so as not to mix up the wires.
Remove each spark plug wire by firmly grasping the wire by the boot (do not pull on the wire) and twist it back and forth a few times while pulling slowly. It should pop off without a great deal of effort. If it is seized and it breaks, you will have to replace the wire, or at the very least replace the terminals (if you can get some).
Use an air hose and blow around the base of each spark plug to dislodge any loose dirt that could fall into the cylinders (not absolutely necessary, but a good idea).
Remove each spark plug with a spark plug socket and extension and ratchet (I forget which size socket, it's either 5/8 or 13/16).
Check the gaps of each new spark plug (typically around 0.035 in).
re-install each new spark plug by hand (do not cross-thread them) and once you have ensured that the plug is threaded in properly, tighten the plug until it seats, and then tighten an additional 1/16 of a turn. Repeat this for the remaining plugs.
Re-install wires to the corresponding spark plugs.
You're done!
To change the plugs, do one at a time so not to mix up the sparkplug wires, remove plug wire from a plug, use sparkplug socket to remove the sparkplug make sure to gap new plugs, ask parts store for the gap setting they will give it to you when plugs are bought, the plug gapper is about $2.00. and that about it, the rear plugs are a little harder to get to but the same way to remove, some buicks came with metal heat sheild over the sparkplug boot in the rear cylinders make sure to reuse, you will know if you have them they will slide right off old boot.
Get sparkplugs and plug wires. A/C delco plugs if possible. Gap plugs to .060 witha spark plug gapper. Use a 3/8 rachet and extention with a 5/8 spark plug socket will make the job easier, and last but not least stay calm and work through everything. good luck
Your timing chain may need replaced. Sounds like your plugs are sparking too late or too early. or the gap is too big in your plugs. ( get a gapper and regap to .08 ish.. ) Try these
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