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Old 05-09-2007, 12:16 AM   #33
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 60,065
Quote:
Originally Posted by Undertoad View Post
What surprised me is that they can now re-thread the hole. That's not something I would want to do under a shade tree though.
Installing a heli-coil to repair the thread isn't hard but doing it without getting any metal chips or crap inside the motor is very tricky. The best method I've heard of is snaking an air tube down the intake through an open intake valve, with the piston at top dead center, to create an air flow out the sparkplug hole. The safest is taking the head off, but that's no fun.
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