No you always need to check the void on the spark plugs since one plug might fit 15 different engines with 10 different Gap size there"s no such thing as a pre gapped plug

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Agreed, it"s a good idea to inspect the gap. Also, examine the day on a thread prior to replying! sorry couldn"t resist......
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1,50243783S.W. Ontario CanadaBuick Ownership2018 Regal Sportback - 2010 Yamaha R6 (track bike) past cars: 92 LeSabre, 98 Regal, 02 GrandPrixGT
I always check the gap... Eventho the gap on brand-new plugs is pretty much what it should be, I always end up adjusting some of them a couple of thousands.
Well the ones ns bought were at prefer .054 so ns gaped them at sixty and now I"m acquiring p0300 password multiple misfires

2,285570113Buick Ownership1999 Buick Park path Ultra (Supercharged) , 1977 Buick Electra limited (350 SBB)
Well the ones i bought were at choose .054 so ns gaped them at sixty and now I"m gaining p0300 password multiple misfires

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GUEST. Go AWAY. THIS IS OLD THREAD.BUT if you had purchased a iridium plug, say, an ac delco 41-101, girlfriend CANNOT void them. The fine tip is damaged if you try. You have the right to carefully check them, i have actually checked 10(yes 10, not 12 or 6) 41-101 carefully and also they to be on spec, period. So ns think its safe to say the ac delco plugs designed for the engine are pre-gapped. If you had a platinum, ns think it depends on plug building if girlfriend can space or not. If you have actually copper, commonly you can change the gap and they are far more universala plug because that a 2000-2005 lesabre has actually a long, smooth ceramic insulator and also looks favor this:
a misfire can be native a damaged finish of the spark plug grounding out on something other than the traditional place, or the void is now functionally bigger than .060 because you tried to space it and broke it, and also its too much for a long enough spark to correctly ignite in ~ the ideal time. Or its taxing your ignition device too much and the coil cant construct up sufficient to do a strong spark, for this reason it just doesnt fire i beg your pardon you would certainly definitely notice under load