adallak Posted October 6, 2010 Report Share Posted October 6, 2010 Can some one help i have an 1999 cadillac sts i need to know the right spark plugs gap size i have been told .050 to .055 and also .060 I had it set to .055 And it run ok I redid it to .050 and the car will stop running some times not all the time. can some one tell the right gap size. Thanks Welcome to the forum. The correct gap is 0.050". The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
KHE Posted October 6, 2010 Report Share Posted October 6, 2010 There will be an emissions sticker under the hood - possibly on the inside front edge of the hood that will have the proper plug gap. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
ialicea Posted October 7, 2010 Report Share Posted October 7, 2010 Thanks for the gap Link to comment Share on other sites More sharing options...
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