Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, Changed my plugs last night! in Cadillac Escalade Forums; I've had a slight stumble/miss when in gear and stopped. Slightly annoying, but no CEL's. So I grabbed some NGK ...
I've had a slight stumble/miss when in gear and stopped. Slightly annoying, but no CEL's. So I grabbed some NGK plugs and went at her!
Stupid rubber boots have been sealed on there, and I'm sure those were the factory plugs @ 66,000 miles. Took me over 2hrs to do the swap, man that was a bear to find access to #7 and #8 cylinders. I thought my Ford Modular motors were bad for access...wow
Anyways, buttery smooth idle now while in gear and stopped. Hopefully see a little MPG gain as well, but I doubt it
btw, just wanted to throw out there that there is no way in hell those are 100,000 mile plugs. I checked their gaps and it was on average 0.080. Those are platinum tip plugs and they are supposed to be 0.060 gap from factory. I put the new plugs in with a gap of 0.040 per the TSB since my new plugs were iridium tips.
I've never believed that 100,000 mile crap that Ford/Dodge/GM have gone to, and this illustrates it perfectly to me. I typically do a 2yr or 30,000 mile swap personally. Plugs are cheap, I think I paid $32 for a set of 8 "middle of the road" plugs for the 6.0.
I changed mine here recently my budy was a mechanic at a gm dealership and said those are the original plugs they have a little over a 120,000 on them don't get me wrong they were at .060 thousandth's with the tip burnt completely off and the new ones are .040 thousandth's it ran good still I just wanted to check everything someone else neglected and my milage seemd low that was my last resort I can't believe it still ran on those plugs I never believed the 100,000 mile plugs either but I'm a believer now but I'm sure where you live and the type of fuel you get all makes a difference
And I wish I can remember what he was telling me about ac Delco but it was something like there's actually 2 ac delcos the ones you buy at advance, auto zone or wherever aren't the real deal the tips and the white part around it are made from a different type of material either way the real deal delcos are way more expensive than anything you'll buy at a part store
I have 137K on my 06 on the original plugs. I know they've never been changed because I bought it new in June 06. I've been thinking about changing them but it still runs great. I have a set AC/Delco that I bought at Advance Auto, but now Johnny fox got me wondering if they are good set of plugs or a cheap imitation.