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Anyone use a helicoil to fix a broken off spark plug problem?

Posted on 9/8/13 at 10:03 pm
Posted by ADLSUNSU
Baton Rouge
Member since Sep 2007
3518 posts
Posted on 9/8/13 at 10:03 pm
I have a riding lawnmower that must have had a wrong size or cross threaded spark plug.

Been trying to figure out the right size helicoil, but also some say you can drill witha ton of grease without having to take off the block, but it seems risky
This post was edited on 9/8/13 at 10:07 pm
Posted by DonChowder
Sonoma County
Member since Dec 2012
9249 posts
Posted on 9/8/13 at 10:58 pm to
It's a cheap attempt to salvage a mower. Totally worth it IMO.
Posted by Clames
Member since Oct 2010
16632 posts
Posted on 9/8/13 at 11:19 pm to
Yeah, I've done that with automotive engines without issue. Just go slow and use plenty of grease to catch the chips.
Posted by 4WHLN
Drinking at the Cottage Inn
Member since Mar 2013
7581 posts
Posted on 9/9/13 at 6:13 am to
Had to use one on a cam journal bolt on my atv. That was 4 years ago and she's still going strong.
Posted by greasemonkey
Macclenny Fl aka south JAWJA
Member since Aug 2012
2765 posts
Posted on 9/9/13 at 6:58 am to
we do them all the time on the fords that blow the plugs out or someone breaks them of.

use grease on tap and pull the pullrope hard a few times before putting plug back in.

the shavings left will blow out when you start.

done hundreds and never had a problem
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