Broken valve cover screw - Hyundai Forums : Hyundai Forum
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post #1 of 21 (permalink) Old 04-09-2019, 09:35 AM Thread Starter
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Broken valve cover screw

So I did a tune up, changed leaky valve cover, and while reading the torque spec's in the manual, it stated 80 ft. lbs, which seemed a bit much to me (not realizing it should of been inch pounds, which converts to 6 to 7 ft. lbs) So, needless to say I snapped 1 bolt (rookie move, at least it was only the one).
Can't understand why the manual would say ft. lbs, but at least I figured it out.


Sooooo, how can I remove the broken bolt? Also, one of the bolts doesn't seem to want to tighten up. It sits right, just wont tighten up. Any suggestions?

Thank you.
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post #2 of 21 (permalink) Old 04-09-2019, 09:48 AM
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Drill extractor set to get bolt out... and sounds like the hole for the other bolt is stripped so try to retapping threads
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post #3 of 21 (permalink) Old 04-11-2019, 03:26 PM
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i did the same thing on the v6 try to put some oil in the hole with the broken off bit and i used a pick to slowly thread it out, my problem was i rented a uncalobrated torque wrench and snapped it. needless to say i gave the manager at autozone who gave it to me saying it was good a **** of a chat
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post #4 of 21 (permalink) Old 04-11-2019, 03:38 PM
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Quote:
Originally Posted by sonya71 View Post
So I did a tune up, changed leaky valve cover, and while reading the torque spec's in the manual, it stated 80 ft. lbs, which seemed a bit much to me (not realizing it should of been inch pounds, which converts to 6 to 7 ft. lbs) So, needless to say I snapped 1 bolt (rookie move, at least it was only the one).
Can't understand why the manual would say ft. lbs, but at least I figured it out.


Sooooo, how can I remove the broken bolt? Also, one of the bolts doesn't seem to want to tighten up. It sits right, just wont tighten up. Any suggestions?

Thank you.
This is one where someone would have to see the situation to evaluate what needs to be done
If the broken bolt is sticking out then would try to grab it with vise grips
But, I am thinking it snapped close to the top of the head or even below the opening for the bolt
They don't usually snap off flat.
Would try using a punch .. pin
Try to make a dimple so the drill bit doesn't run around.
Then drill the bolt out using lots of cooling water or oil
Using bigger and bigger drill bits until you get close to the size of the bolt hole.
Then use a square or easy out to take out the rest
There are youtube videos on how to do this.
Good luck
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post #5 of 21 (permalink) Old 04-12-2019, 10:54 AM
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You stripped the threads on one. Just retapping the hole as someone suggested probably wont do anything considering the hole is now the width of the fastener plus the threads. You could helicoil it... Or retap to the next size up. Helicoil would be your best option. As big a fan as I am of torqueing things exactly. Things like this are when the head of the fastener touches plus a little bit till it feels barely snug and that's good enough. I would try taking the corner of a chisel and backing the broken one out.

These manuals have loads of little misprints like that. Seeing as this is a translated manual there are many errors. You're torque wrench probably also indicates Nm as most of them do in addition to ft/lbs. I always use the Nm reading because you know there really isn't anything to screw up.

Now here is the part I will get shot for. You might be able to just leave that one broken fastener in there and be just fine... Maybe even the stripped one too depending on where it's located. Especially if you ditched the gasket and put a bead of RTV or "The right stuff" (Love that stuff...cures fast). Or even getting another gasket and coating the mating surfaces of the head and valve cover with "hi-tack" Mind you I do not advise this, but it could be worth a shot.
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post #6 of 21 (permalink) Old 04-12-2019, 11:43 AM
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Is there any thread sticking up? Probably is not tight and if there is something to grab then use it to turn it out.

If it is not then get a left handed drill bit big third the diameter of the the bolt. Then drill in reverse. It will go in a ways then sang and back right out. Easy Peasy.
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post #7 of 21 (permalink) Old 04-15-2019, 06:16 PM Thread Starter
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I did drill a pilot hole with a drill very carefully. Then used a "bolt out" removal kit I had, followed directions, didn't work. Could I just drill the bolt all the way through?
*** I should of mentioned that it broke below the lower half of the valve, so I was able to remove the upper part of the valve cover.
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post #8 of 21 (permalink) Old 04-15-2019, 11:57 PM
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Just got to take your time and be careful
You don't want to drill and wipe out any part of the threads
And you have to be careful not to go beyond bottom

Good luck
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post #9 of 21 (permalink) Old 04-16-2019, 08:44 AM
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Try an 1/8" left handed drill bit.

Irwin Left Hand Drill Bit 1/8"


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post #10 of 21 (permalink) Old 04-25-2019, 03:30 PM Thread Starter
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FINALLY finished ALL the engine work! Put it all together, and she started right up!!!!! THANK YOU ALL SO MUCH FOR ALL YOUR HELP!
Sadly, I now hear a loud ticking from the engine....
It's got oil. I took my time replacing the valve cover gasket, and correctly fixed my "bolt situation". I noticed some white smoke from the tail pipe, goes away after a bit. Any suggestions what it may be?
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