Spark plug removal

[DavidL]

I was going to change the plugs and wires on my '99 Silverado (5.3L engine)this weekend. I was using a standard socket wrench with spark plug socket. I put the socket on the first plug and applied what I thought would be enough force to break it loose, but it didn't budge. I put a little more force on it and still nothing. At that point, I started getting a little nervous and decided to stop. These are the original plugs with 92,000 miles on them. Any advice on getting these babies loose? Is there a danger of breaking the plug off in the engine if I apply too much force?

[NoRiceHere01]

no the plug wont break and get struck. even if the ceramic part breaks off the socket will still work.the only problem i can see is if that part breaks off and u still cant get the other half out haha. all i can say is make sure ur turnin it the right way (thats the voice of experience im not pickin on u) and put ur back into the socket wrench

[2000CAYukon]

You could spray some PB Blaster to get into the threads. Once you get them out, don't forget to put a dab of anti-sieze on the threads of the new plugs.

//2000CAYukon

[chuck16]

Mine were super tight as well. Just apply a little pressure and you'll be aiggh't!

[MT-2500]

Originally Posted by DavidL

I was going to change the plugs and wires on my '99 Silverado (5.3L engine)this weekend. I was using a standard socket wrench with spark plug socket. I put the socket on the first plug and applied what I thought would be enough force to break it loose, but it didn't budge. I put a little more force on it and still nothing. At that point, I started getting a little nervous and decided to stop. These are the original plugs with 92,000 miles on them. Any advice on getting these babies loose? Is there a danger of breaking the plug off in the engine if I apply too much force?

Yes they can and sometimes will break off or on aluminum heads take the treads out with the plugs. As said sometimes penetrating oil may help.
But go easy and if you are afraid of twisting them off it might be better to get a repair shop to do it.
Good luck
MT

[DavidL]

Thanks for the help. I'll probably try the PB Blaster just to be safe. And I learned my lesson the hard way about using anti-sieze. A simple replacement of a set of shocks turned into a nightmare. That's why I'm kind of paranoid about the plugs.