Ritters Dad
New Member
I changed out the original spark plugs at 12k miles recently. I used the recommended NGK CPR8EB9 plugs, put anti-seize compound on the threads and tightened them all the same. Bike ran well for about 300 miles then I started to hear the dreaded nondescript engine noise and uneven performance. After spending hours researching what this could be, I saw everything from loose battery cables to cam chain tensioners to throttle body syncing, throttle position switches, accelerator position switch.....you get the picture. I finally snapped out of data paralysis and decided to start with the plugs. I pulled the first 3 going right to left, all were in perfect condition, clean with white porcelain insulators. I had a very tough time pulling out the coil on #1. When I did get it out I was shocked to see the rubber boot fried and crispy. I was also dismayed to see the top half of the spark plug still in the grip of the coil assembly. In other words the threaded barrel stayed in the cylinder head. Not unheard of but a bit of bad luck.
So I have a broken spark plug with the threaded portion still tightly in the cylinder head with the central electrode and porcelain snapped off and intack.
Question: how in heck can I get the bottom half out without breaking the insulator porcelain and risking pieces of porcelain falling into the cylinder chamber.
Any ideas out there?
So I have a broken spark plug with the threaded portion still tightly in the cylinder head with the central electrode and porcelain snapped off and intack.
Question: how in heck can I get the bottom half out without breaking the insulator porcelain and risking pieces of porcelain falling into the cylinder chamber.
Any ideas out there?
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