ok, dam ghost on #6 firing hole .

[gregk]

Sitting  here in  the garage cleaning  the old girl up waiting for spring and I see l  have  a corrosion problem around the #6 firing hole. Every spring it is worse. I never look pay attention to it throughout the year. Spark plug is OK being sealed but corrosion on that part of the plug that ,is not sealed. Corrosion exists on the walls of the hole and on the entire boot that is in the hole. The corrosion is starting to migrate out of the hole on to the head. I won't look back here till this eve but wanted to post while its on my mind.  Do you guys think its just a sealing problem with the boot maybe letting  in rain or wash water. Maybe clean all up and run a good bead of permatex around the boot and see what happens later.this summer?

[9Ball]

clean out the drain hole with a piece of wire....probably plugged.

[98valk]

what 9ball said or a cat likes to leave its mark there.

[Patrick]

Be careful when removing the sparkler !  There may be some 'crap' [technical term] sitting way down in that hole and you don't want that in the cylinder. At least, I wouldn't. So when you remove the plug wire, blow the hole out real good. You may be able to clean the drain hole without removing the sparkler, I can't remember.

[gregk]

Drain hole ? Sounds like your messin with me. how big is this drain hole & where does it come out? do I need to by a borescope to find it ?   I cut off a plug just above the gasket and brased it shut then cut a slot so i can thread it in the hole an stick a dremal  brush in the hole to clean up the bottom of the hole.

[Thunderbolt]

No what they said is correct.  Each plug has a drain hole that exits the bottom of the head.  Look for it.

[Patrick]

The drain hole is just below the base of the sparkler and exists thru the bottom of the cylinder head. A long piece of mechanic wire will work.

[gregk]

Wow I found it. Stuck my new cell phone thingee  in the hole and just like manic it appeared . I wonder if I am the only dummy that didn't know those holes exist. 90,m. Later still learn in . Hats off to you guys!