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Author Topic: Stripped Spark Plug Nut (help Quick Please)  (Read 10153 times)

Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« on: 10:13:57 AM / 17-Feb-08 »
I think I am seriously screwed. On cyl no.2 of my CA20 I have managed to strip the nut on the spark plug. After 3 times letting some penetrating oil sit on it, and I also heated it up twice. Nothing. I finally took a breaker bar to it. Stripped the nut right off.

How the hell do I remedy this?

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I'd rather be a matchstick than a lighter.

Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #1 on: 12:13:15 PM / 17-Feb-08 »
Bump before sledge hammer and beer becomes a good idea.
I'd rather be a matchstick than a lighter.

Offline seishuku

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Stripped Spark Plug Nut (help Quick Please)
« Reply #2 on: 12:46:20 PM / 17-Feb-08 »
You could drill out the center and use an ez-out, but use a good ez-out... The cheap ones like to break off.
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Offline 200sxkitcar

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Stripped Spark Plug Nut (help Quick Please)
« Reply #3 on: 08:08:32 PM / 17-Feb-08 »
Allright, let me get this straight, the spark plug broke off and all there is is the threaded section still in the head?  like the part where you put on the socket on broke off?

If it is just the threaded part in there, there are ways but it will be a bit of work.  If the part with the hex head is still there, then you can try a *bit* of heat, and maybe that will work to loosen it some, with some of our other-than-Jack-Daniels-friend pb blaster.  

What side of the motor is this?  Intake or exhaust?

Do any of your friends/family have a stick welder?

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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #4 on: 09:17:15 PM / 17-Feb-08 »
It is the intake side. I already soaked it 3 times with blaster, and heated it up twice. The nut of the plug rounded. I used a 5/8" plug socket. When I used the breaker bar I had a good 200 lbs into it. Rounded it like I was cutting through butter when it finally gave. They are NGK plugs by the way.

The porcelin on all of the plugs were brittle and crumpled in the socket. So they are definetly old...
I'd rather be a matchstick than a lighter.

Offline bartc_j

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Stripped Spark Plug Nut (help Quick Please)
« Reply #5 on: 09:34:08 PM / 17-Feb-08 »
how in the hell did the plug get in there so tight.. was it driven in cross threaded....?
Bart
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Offline Keith

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Stripped Spark Plug Nut (help Quick Please)
« Reply #6 on: 10:42:03 AM / 18-Feb-08 »
Quote from: bartc_j
how in the hell did the plug get in there so tight.. was it driven in cross threaded....?
yeah thats what I was wondering...the tightening torque is suppose to be like 17-20 ft. lbs.
Which side is it on....intake or exhaust side?
« Last Edit: 10:43:58 AM / 18-Feb-08 by Keith »



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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #7 on: 10:52:17 AM / 18-Feb-08 »
I dont know

The previous owner was a woman... lol

Intake side.

It seriously feels like someone used locktite
I'd rather be a matchstick than a lighter.

Offline sinestro

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Stripped Spark Plug Nut (help Quick Please)
« Reply #8 on: 11:21:23 AM / 18-Feb-08 »
you could try to force on the next size smaller socket, that sometimes works for me when i strip something, but you wont be able to use that plug again, but i dont think you planed to anyway
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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #9 on: 11:29:44 AM / 18-Feb-08 »
Thanks. I am going to wait for my dad to get back from Louisiana before I pull my head. He is a master at extracting the impossible. He will probably weld a bolt onto the remainder of the plug and pull it out effortlessly like the asshole he is lol
I'd rather be a matchstick than a lighter.

Offline IggyEGuana

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Stripped Spark Plug Nut (help Quick Please)
« Reply #10 on: 11:35:12 AM / 18-Feb-08 »
The socket you were using?  12 point or 6 point?  Use 6 point.

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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #11 on: 11:42:32 AM / 18-Feb-08 »
6 Point.. lol I am not a complete moron.
I'd rather be a matchstick than a lighter.

Offline firestarter

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Stripped Spark Plug Nut (help Quick Please)
« Reply #12 on: 12:54:39 PM / 18-Feb-08 »
take a 12 point socket and hammer it on the rounded off nut, should grip it. then if it strips the spark plug, even more, just swap in a ca18det!
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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #13 on: 01:33:26 PM / 18-Feb-08 »
What size do you suggest? The spark plug is 5/8. Do I use a 15mm? Its a .035" difference. Or there is 9/16 which is a .0625 difference (smaller of course)
I'd rather be a matchstick than a lighter.

Offline bartc_j

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Stripped Spark Plug Nut (help Quick Please)
« Reply #14 on: 02:40:25 PM / 18-Feb-08 »
Quote from: DeathAndMajesty
What size do you suggest? The spark plug is 5/8. Do I use a 15mm? Its a .035" difference. Or there is 9/16 which is a .0625 difference (smaller of course)

9/16might be to small, i the 15mm feels like it will hammer on easily then try the 9/16
Bart
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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #15 on: 02:40:55 PM / 18-Feb-08 »
10-4
I'd rather be a matchstick than a lighter.

Offline IggyEGuana

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Stripped Spark Plug Nut (help Quick Please)
« Reply #16 on: 02:48:39 PM / 18-Feb-08 »
IDK why but I feel a split socket coming on.  Use a nice big impact socket for this if possible.

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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #17 on: 02:54:33 PM / 18-Feb-08 »
I was thinking, hammer it in and fill it with knock off JB weld, the kind that can easily be removed with penetrating oil. This would make the torque spread more evenly and stiffen it up.


Now should I run the engine a couple minutes before I do this to heat it up? Or is this a bad idea? I want to minimize the chances of me stripping head thread.

Your talking about the heavy black steele 1/2 drives right?

I dont think Its going to bust a socket though. I think the head thread will pull out before that happens. Penetrating oil has been sitting on that thing two whole days now.
I'd rather be a matchstick than a lighter.

Offline VG30_S12

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Stripped Spark Plug Nut (help Quick Please)
« Reply #18 on: 03:18:40 PM / 18-Feb-08 »
sorry to jack the thread, but couldn't you in theory just use one side of the spark plugs?

Ive got a VG so i have no idea about the CA's, but it comes with two separate sets of plugs right? the first set to Ignite the fuel, and a second set to help burn off left over fuel so that it could comply with US emissions standards... this of course is just what i've read...

for example, a Mazda 13b has two sets, a Leading plug and a Trailing plug... the trailing are fired to burn extra fuel, but if you disconnected say the trailing or leading, it would still run off of one plug per rotor..
.
couldn't you just in theory, take one set of plugs loose, and adjust the timing and use only one set of plugs? I mean, not as a permanent fix but as a temp thing so you could at least drive it

please excuse my crazy logic
good luck getting that thing out mang
« Last Edit: 03:20:21 PM / 18-Feb-08 by VG30_S12 »
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Offline TalkingGoats

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Stripped Spark Plug Nut (help Quick Please)
« Reply #19 on: 03:47:52 PM / 18-Feb-08 »
The exhaust side will run, but its a very incomplete burn. They dont fire at the same time. I want to figure out how to make both the exhaust  and intake side fire at the same time. For both the intakes spark, and the exhausts spark.
I'd rather be a matchstick than a lighter.