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Unread 11-17-2011, 10:30 AM   #1
4x4Jeep
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no gap on spark plug

just bought some plugs for my jeep and one of them has no gap at all



don't want to break it, but can i take some pliers and open it up or should i return it?

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Unread 11-17-2011, 10:35 AM   #2
ajmorell
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You can try to open it up, I would just run it back to the place you bought it from and get another one so I didn't risk bending the electrode
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Unread 11-17-2011, 11:37 AM   #3
mdm
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Quote:
Originally Posted by ajmorell View Post
...I would just run it back to the place you bought it from and get another one so I didn't risk bending the electrode
Really?

Just set the gap to the proper setting and put them in.
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Unread 11-17-2011, 11:52 AM   #4
ajmorell
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Yes, really. I've got plugs like that before and tried to fix them and completely mangled the electrode trying to get it gapped right.
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Unread 11-17-2011, 12:43 PM   #5
mdm
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What were you using to set the gap? It's pretty simple.
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Unread 11-17-2011, 01:55 PM   #6
ajmorell
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It wasn't an issue of setting the gap. It was an issue of bending the electrode back so that it could be gapped to begin with.
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Unread 11-17-2011, 02:52 PM   #7
mdm
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That shouldn't be a problem.
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Unread 11-17-2011, 03:14 PM   #8
ajmorell
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I agree, it shouldn't but when I tried to bend it back it mangled the electrode all to hell. I don't know why, maybe it was a fluke thing, the electodes are soft enough metal they should bend easily. It was one of those things where I just felt better spending another $1 to know it was right even though I probably could've run it the way it was.
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Unread 11-17-2011, 03:39 PM   #9
mdm
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What were you using?
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Unread 11-17-2011, 03:42 PM   #10
1HouseMouse
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Excellent example of a mass produce item. Check everything every time and assume nothing.
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Unread 11-17-2011, 04:00 PM   #11
ajmorell
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Quote:
Originally Posted by mdm View Post
What were you using?
I think I originally used a pair of needle nose pliers to bend the electrode (I'm talking about the ground electrode, not the center electrode) back a bit, then I used your standard plug gapping tool, but like I said, I mangled the ground electrode somewhere along the way. I'm not saying they can't be bent back without success, just that I f'ed one up trying.
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Unread 11-17-2011, 10:37 PM   #12
jnicewan
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The better spark plug gap tools actually have a recess to spread the electrode out BTW. I would assume at some point the spark plug was dropped. Just gap it back out to spec, maybe note what cylinder you put the bent on in just in case you have a misfire (nevermind you said all of them were bent) Worst case is if it was dropped it could have damaged the plug or cracked the porcelain.
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Unread 11-18-2011, 02:02 AM   #13
NonRubicon
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Quote:
Originally Posted by jnicewan View Post
I would assume at some point the spark plug was dropped....Worst case is if it was dropped it could have damaged the plug or cracked the porcelain.
This.

I would exchange it for a plug with some sort of gap.
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Unread 11-18-2011, 09:14 AM   #14
4x4Jeep
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Quote:
Originally Posted by NonRubicon View Post
This.

I would exchange it for a plug with some sort of gap.
yea, i'll go do this. i wouldn't know how much to gap it anyway.
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Unread 11-18-2011, 01:07 PM   #15
ajmorell
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Quote:
Originally Posted by 4x4Jeep View Post
yea, i'll go do this. i wouldn't know how much to gap it anyway.
There should be a sticker under the hood (it was on the fan shroud in my ZJ) that says the stock plug p/n and gap
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