kbaird83

hey i got a 02 silverado 1500 2wd 5.3l that sits a little lower on the front drivers side. about a half inch. i have heard that this is reffered to as the chevy lean? is it normal? also i just (today) switch to the autolight iridium plugs. does any one run these? the guy told me not to gap them? also i didnt think about it before but will switching to these plugs cause problems with my warranty? thanks!

j cAT

the 2wd trucks have bad springs,,,,the battery , you and the fuel tank is on the driverside...you need front springs...also keep your shocks working properly,,,as soon as the shock gets sloppy , the springs start to sag..

4wd the height is adjustible,,,,and the ride is better..

using the ac plugs is recommended....I now have the bosch +2 platinum and I have no problems but,,,next time I'm gonna give the ac plugs a try..

mwid73

Those plugs need to be gapped....The guy who told you not to should get a new job...

kbaird83

the guy told me that the plugs came gapped to the plug and werent supposed to be gapped to the truck. something about gapping them will damage the plug? what happens when they arent gapped properly? i checked before i put them in the truck says .60 the plugs were.48.

isie

when you get a platinum plug and they are not gapped correct you need to return them, because when you correct the gap you will most likely hurt the platinum coating and ruin the plug, that is why you should not gap platinum plugs.

kbaird83

they werent the plats they are iridiums. dont know if that makes a difference. the guy said they burn hotter than any other plug and offer a more complete burn. this is why they are gapped to the plug is because they are set for optimal spark and by opening up the spark more you decrease the spark and damage the plug. he sounded like he knew what he was talking about haha. i dont know never ran them in a car before i run the NGK iridiums in my dirtbike and have been gapping those.

masapell

The gap was changed by GM a few years back, hence the reason for the difference. The gaps are preset, unlike old copper plugs, so adjustment is not necessary, nor is it recommended. If there is one that is not the correct gap, you need to take it back to the parts store.

About being a hotter plug, that I cannot answer. But, the reasoning behind using platinum/iridium is that they are much harder metals, thus the gap does not change over time. Remember back in the old days when you had to check the gap on your old copper plugs? Those days are over!! Plugs are designed to last much longer with the exotic metals. There are some vehicles that you definitely would not want to be changing plugs every 30,000 miles on, ones that are impossible for the shade-tree mechanic to remove!

Sincerely,
Matt

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2000 Silverado Ext.Cab, 5.3L, Pewter, True Flow Foam Filter, Airaid Intake, Flo-Pro Performance muffler, Hayden 679 Rapid Cool Transmission Cooler, Hidden Hitch

j cAT

the auto lite iridiums may need to be gapped..your gap should be .060....the problem with re-gapping these plugs is the centre electrode is very weak..therefore you must noT touch,, this electrode or risk it being damaged...when correcting the gap....[XP5245]..

these plugs are supposed to create a hotter "spark",,this is said to aid in better combustion/power...over a longer period of time than other plug types...

doferty

I am using the Bosch 2 platinum. No gaping required. Made a slight improvement in low end. Idles smoother and smoother starts (don't get that clank sound anymore). They may not last as long as the ACDelco but the sure are nice.

__________________
Tim Dougherty
2002 Silverado 2500 6.0 4WD

kbaird83

so far i havent noticed any adverse affects with the plugs. gain a little more power and the fuel economy got noticably better. truck has always started great and has always had a little bit of a rough idle not bad just barelly enough to notice. still the same so the only differences so far have been possitive. not sure if they were worth the 58 bucks for 8 price tag we will see.

reelcrzy

I have 2001 5.3 should i use .48 or .60 gap ?

j cAT

the recommended plugs delco irridium are pre-gaped at .060..when you check this you must be very careful not to damage the plug tip...these tips when using the gauge will break or crack..