The last mechanic I went to torqued these to hell...what are the chances he also tightened my spark plugs this much?
Never again...my other mechanic never overtorqued things this much.
this post was submitted on 17 May 2026
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In my case I had rounded off the bolt head in a few spots with an open ended wrench after a few tries not realizing it was going to be stubborn. Had a hard time getting the correct sized close ended wrench on with the warped sides. Went up a size by switching to metric and getting a decently good grip. That stripped it further, but warped the head even more so I was able to get the right sized closed wrench on it with a few "gentle" taps of a hammer. It juuuuuuust barely came off. The head was mutilated to hell.
I've seen people use a grinder to grind down the sides of the head and use a smaller wrench to try again. Or cut a plus in the head and try a screwdriver. But that's assuming the head hasn't popped off yet.