gsta86
Full Access Member
i forgot to buy a spark plug gap tool, what should the plugs be gapped at for my truck? can i go ahead and put in the new ones w/o proper gapping? i mean, pops always did it like that. ha.
Simple question
- Thread starter gsta86
- Start date
gsta86
Full Access Member
You '03 5.3 liter should have the plugs gapped at 0.060.
Josh, most of the new plugs come gapped for the application but it's always good to check them before install. If you have no gapper and can't get one, us a regular copper penny for your gap. It's just a shade less than 0.060".
Also, go here and download a copy of this manual for your 2003 Silverado. Save a copy on your computer for future reference, I was surprised at the amount of useful info in it.
http://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html
http://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html
gsta86
Full Access Member
i got the chilton opened up on the table, but i didn't see it listing the actual specification. the damn boots were such a pain in the ass, i just hopped on the bike and went back to checkers, to get a boot puller, gapper, and some much needed vice grips.
Look on page 1-39 towards the bottom of the page for the gap spec.
gsta86
Full Access Member
well, look at that there. bam, right in my face. got 5 of 8 done. # 5, 7, and 8 i can't get done. need a 3in extension that i dont have and #7 boot has proven to be quite the pain in the ass, more so then all the others have been.
Yeah #7 & 8 can be a real PITA. I always need a stubby extension for the #8 plug, wiggle and pull on the wires it will eventually turn loose.
gsta86
Full Access Member
mission accomplished. some 8 hours later. 3 visits to checkers + the GF stopping on the way home to grab me a 3in extension. (that didn't help) but! no banged up bloody knuckles! truck is running tremendously smoother! pretty sure the spark plugs were gapped a lil bit more then .060, but all around the same area. and for some reason this exhaust leak i thought i had, kind of quieted down also....strange. maybe this week i'll even in finish the whole exhaust.
