spark plug popped out
Thread Starter
7th Gear
Joined: May 2005
Posts: 7
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spark plug popped out
Just seeing if anybody has ever seen this one and how bad do you think the damage is. I was driving the other day and the check engine light came on and I lost almost all power, I opened the hood and when looking from the front of the car, the far left spark plug was dangling from the ignition wire. I let the car cool down and tried to put the plug back in but it never will tighten. It is theaded enough to no be able to just pull out but it is just kinda hanging there. I bought a new spark plug hoping it was just the old plug which was stripped but it is doing the same thing. Is this something which you all think could be rethreaded?
Thanks for any comments
And to think I really don't drive it that hard...
Thanks for any comments
And to think I really don't drive it that hard...
Thread Starter
7th Gear
Joined: May 2005
Posts: 7
Likes: 0
Sorry to say I was the last one to change the plugs so I it was my fault, that was about a year ago.. So if I replaced the headers and upgraded them would that solve this issue or is it in the engine block. don't know the internals of the engine that well.
Thanks for any reply
Thanks for any reply
Le Mans Master
Joined: Oct 2002
Posts: 6,772
Likes: 1
From: Tampa FL
the spark plug sits in a hole in the head which sits on top of the engine block.
it's odd that out of nowhere it would fail like that .. are you sure nobody has been messing with your car?
there are two options, one pull the head, have it re-threaded or two replace the head altogether .. might be a nice time to change out to some more flowing heads
but based on your initial response .. my suggestion would be to take it to a trusted mechanic .. best of luck
it's odd that out of nowhere it would fail like that .. are you sure nobody has been messing with your car?
there are two options, one pull the head, have it re-threaded or two replace the head altogether .. might be a nice time to change out to some more flowing heads
but based on your initial response .. my suggestion would be to take it to a trusted mechanic .. best of luck
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Originally Posted by flake19
Sorry to say I was the last one to change the plugs so I it was my fault, that was about a year ago.. So if I replaced the headers and upgraded them would that solve this issue or is it in the engine block. don't know the internals of the engine that well.
Thanks for any reply
Thanks for any reply
The original problem is the threads in the Aluminum head were damaged (probably by galling). You can really only chage plugs safely in aluminum heads when things are cold and you have to use antiseize on the plugs before the new ones are installed.
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Originally Posted by dougbfresh
........(Snip)
The original problem is the threads in the Aluminum head were damaged (probably by galling). You can really only chage plugs safely in aluminum heads when things are cold and you have to use antiseize on the plugs before the new ones are installed.
The original problem is the threads in the Aluminum head were damaged (probably by galling). You can really only chage plugs safely in aluminum heads when things are cold and you have to use antiseize on the plugs before the new ones are installed.
Not to mention not over-tightening. 
Safety Car
Joined: Jul 2005
Posts: 4,275
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From: Vancouver WA
You can heli-coil it, or you can weld it up and re-machine it, or you can just buy another head. LS1 heads are pretty cheap since a lot of people upgrades to better heads. But don't stick a used head on without having a quality machine shop inspect the valves, guides, springs, etc.. I personally would take the head off if you chose to heli-coil, and not try to do it on the car. But your best choice would be to just get another head. I would only attempt a heli-coil if you had a lot of money invested in the head.
Instructor
Joined: Aug 2004
Posts: 100
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popped out plug
ditto the all the above & I whud have the shop check the other plugs too.You can keep yr fingers crossed ,but there could very well be more than one thats failed.Could be both heads have to be removed,if you tell the shop what to do ,thats all they will do.It will be cheaper for them to check it out first....good luck!!