bpalma

iTrader: (1)

Hey hows it going? I performed a tune up on my 02 ls1, used NGK plugs and wires... Was not nearly much of a daunting task as everyone makes it out to be! Just #8 has to be done from underneath for sure.

Anyways, as per all the advice on the net I've found regarding tune-ups on all aluminum motors, I performed the tuneup when the motor was bone cold. I did apply a small amount of anti-seize to the threads, not a lot at all though. Anyways, I tightened them just snug, not overly tight but they basically wouldn't go much more.

The same night after running to pick up dinner, I noticed an unusual ticking sounds while waiting in a drive-thru. The next day, I checked the plugs/wires and noticed that they were barely in the heads, vibrating around.

Does anyone know why this would have happened? Should I do a tune-up next time when the motor is warm to avoid contraction/expansion?

Done tonnes of tune ups, mostly on 3800s, and on a couple aluminum 4cyls and have NEVER had this problem!

disc0monkey

iTrader: (10)

i try to get a torque wrench on all the ones i can. this will remind you what torque they should be at when u torque them by feel. i change my plugs 2 times per oil change never had that happen.

Bramlok

iTrader: (7)

Dont the NGK plugs have washers on them? I dont remember but I may be wrong. If they do its possible you didn't tighten and crush the washer enough to make it snug. That combined with the anti-seize could have caused your problem. I'm just guessing, but it is odd they loosened up.

chavez885

iTrader: (12)

I've had that happen once, just snugged it back down, never had the issue again. Sometimes they're not as tight as they feel...lol

ANTICOP RAM AIR

iTrader: (7)

i used the same plugs on my 97 and it did the same thing but i just tightened them again and it stayed put. im assuming the washer crushing was an issue, you can use a torqe wrench if you can get to it but i just put the plug in and pulled it back out... go easy on the antisieze....

sjsingle1

iTrader: (1)

x2 on the antisieze........use a LITTLE....not a lot........but do use it

Head Hunter

iTrader: (14)

You change your plugs every 1500 miles?

Finkledbody

What? I don't understand why you would change your plugs every 1500-2000 miles? They are good for a minimum of 30k miles. You're pissing money away.

WS6SP33D

iTrader: (2)

I Agree with finkledbody and if your using good plugs thats alot of money

RPM WS6

iTrader: (3)

LOL. Two plug changes per oil change. What a waste.

ae13291

iTrader: (8)

was that a joke?

SparkyJJO

iTrader: (11)

I guess I'm crazy. I don't really use any anti-seize on my plugs. Never had an issue getting them back out either.

And x10000 on what everyone else said. plug changes twice per oil change? Why?

twelver12

iTrader: (3)

if you change them that often you dont hafta worry about them backing out duh! lol

disc0monkey

iTrader: (10)

reading the plugs still tuning...

bpalma

iTrader: (1)

Well im happy to hear that im not the only one this has happened too, ans I did use very little antiseize on the threads. Snugged them back in and all was good, just sucked it had to happen after work and right before I was headed for an hour drive to go to a wedding reception!

And I think i'll be changing mine every 50,000kms, definitely a waste to do em any less then that, even though its not nearly as hard as others have made it out to be. Didnt have to remove the coil bracket at all, just removed the air tube to the manifold and thats it! Plug #8 was done from the bottom, pretty easy that way.

RPM WS6

iTrader: (3)

You don't have to install new plugs every time you pull them for a look. If they are fouled that badly that often, then your tuning process isn't working anyway.