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Dave_N

How to fix stripped spark plug threads???


The threads in the head of my snowblower are stripped from screwing in the spark plug cockeyed. It looks like only the top 2 or 3 threads are bad. Is there an easy fix? Any help is appreciated.

Dave


muskyman

Re: How to fix stripped spark plug threads???


A Tap and Die set is something every man should have.

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I can accept failure, but I can't accept not trying." - Michael Jordan


HookNfinger

Re: How to fix stripped spark plug threads???


I dont know exactly what the tool is called, but i think its like a spark plug tap. it is a reverse tap. you put this tool in then screw it to fit snugly into the threads and then you slowly reverse it out of the spark plug hole, should regroove it. Otherwise you can heli coil it, that is just making the hole bigger and then putting a sleeve in it. Go to sears or napa they will have what you need.

Greg R

Re: How to fix stripped spark plug threads???


Sparkplug Chaser... Auto parts stores have them or you can use the correct size tap to fix the threads and if that does not do it you will need to heli coil it with a new thread insert.

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John23

Re: How to fix stripped spark plug threads???


All good advice. Be careful to keep metal shavings out of the cylinder when you do whatever you choose to do. Lots of good tutorials online.

trumar

Re: How to fix stripped spark plug threads???


Quote:

Sparkplug Chaser... Auto parts stores have them




That is the best way when just a few threads are messed up,Just go slow ,take your time and you will do just fine

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"When it comes to family-Sometimes it not all about fishing" ~Trumar 2009


TG002

Re: How to fix stripped spark plug threads???


Heli coil will work. I have used one before in a 360 aluminum head ASCS sprint car motor and never had a problem. Good Luck

56twister

Re: How to fix stripped spark plug threads???


Since you only have two or three threads messed up I would use a thread chaser. Just work the threads from the inside out. Your inner threads should be enough to allow you to tighten your plug. If all or most of the threads were marred then I would remove the head drill and install a heli-coil (sp?) Just take your time with the chaser.

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If you don't stand behind our troops feel free to stand in front of them.


schweg2

Re: How to fix stripped spark plug threads???


Put grease on the tap to help keep shavings out of the cylinder.

Dave_N

Re: How to fix stripped spark plug threads???


I finally got around to fixing the threads on my snowblower. You guys were right - I went with the thread chaser and it worked perfectly. Only cost me $6 at Sears. Many thanks again to everyone on the forum.

Dave


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