Your worst nightmare comes true!!!! In your front yard!!!

[BFS57]

Hello;
Well, I decided to change the spark plugs in my 08 Trailblazer! I had a 02 version of this vehicle before and didn't seem to remember any problems. That was then, this is now!!!! Got the first 4 plugs out with out any problem. (Now it gets difficult!)
If you arn't familiar with this engine, it's a straight six with the plugs on top, down about 3 inches or so in the engine head and the plug threads are very long! This one plug was harder and (you guessed it) the darn thing came out but broke off leaving the threads inside the head!!!! Lucky (if there is any in this situation) all the porcelain including the tip came out with the plug.
I looked at a couple u tube videos and they all used heat and freezing combined to loosen the part broken off but this is in about  the worst place for this kind of treatment!!!! Its located in the back of the engine where the firewall goes over the top of this area and it's difficult to wrench on because of limited space over the top of it!! I did get a set of screw extractors! but this plug was the only one (yup, got the one behind it out!??) that the end of the plug was very rusty??
I got some PB Blaster and intend to try with that next. (I only had wd 40)
Meanwhile, Im open to any helpful hints that anyone may have to lend me to help end this Nightmare!!!!

Bruce

[58 Yeoman]

I disassembled a 58 Chevy wiper motor yesterday, and used ATF and acetone 50/50 on some of the hard to get apart parts. It seems to get into the really tight spots.

[papastoyss]

Hello;
Well, I decided to change the spark plugs in my 08 Trailblazer! I had a 02 version of this vehicle before and didn't seem to remember any problems. That was then, this is now!!!! Got the first 4 plugs out with out any problem. (Now it gets difficult!)
If you arn't familiar with this engine, it's a straight six with the plugs on top, down about 3 inches or so in the engine head and the plug threads are very long! This one plug was harder and (you guessed it) the darn thing came out but broke off leaving the threads inside the head!!!! Lucky (if there is any in this situation) all the porcelain including the tip came out with the plug.
I looked at a couple u tube videos and they all used heat and freezing combined to loosen the part broken off but this is in about  the worst place for this kind of treatment!!!! Its located in the back of the engine where the firewall goes over the top of this area and it's difficult to wrench on because of limited space over the top of it!! I did get a set of screw extractors! but this plug was the only one (yup, got the one behind it out!??) that the end of the plug was very rusty??
I got some PB Blaster and intend to try with that next. (I only had wd 40)
Meanwhile, Im open to any helpful hints that anyone may have to lend me to help end this Nightmare!!!!

Bruce

Drown it w/PB Blaster & let it soak for a day or 2 & cross your fingers. I always use anti seize on aluminum head spark plugs.

[BFS57]

Hello;
With the info overload I had here is the magic trick that works "every Time"!!
First I got a screw extractor seated in the plug threads. This was done with 3/8" backwoods extension and a 3/8" Coupler.
Had done the PB Blaster all day yesterday! According to the info I got, You start your engine and let it idle (I got mine up to operating temp) Then spray a dab of PB in the area and I started wrenching and the darn thing came out!!!! According to the original poster, this has worked every time all the time!!
The power of information is incredible and helpful!!!!

Bruce

[butch27]

Kriol  -let it soak for half hour

[BFS57]

Kriol  -let it soak for half hour

Hello;
I wanted to use Kriol But couldn't find any and my missing can showed up in someones' box all used up!

Bruce