Spark Plug Washer

Farmall C, Super C Tractors, 200 & 230 1948-1958

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Don McCombs
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Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
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1948 Farmall Super A
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Location: MD, Deep Creek Lake

Re: Spark Plug Washer

Postby Don McCombs » Wed Apr 18, 2018 10:21 pm

Jim Becker wrote:Or maybe deposits allowed by a spark plug that was too short or not completely turned into the hole.

Another very distinct possibility.
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John *.?-!.* cub owner
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Re: Spark Plug Washer

Postby John *.?-!.* cub owner » Thu Apr 19, 2018 11:43 am

After seeing that picture I woud suggest pulling the head and taking it to an engine machine shop.
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Hairy Moose Knuckles
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Re: Spark Plug Washer

Postby Hairy Moose Knuckles » Thu Apr 19, 2018 12:36 pm

Yes John, that would be the smart thing to do. Nothing we have tried has worked. Will give the diesel/atf a few more days before pulling head. We are suppose to get a gully washer come Saturday and I don't have an inside shop, so I may wait till next week to pull the head.

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AL Farmall Boy
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Re: Spark Plug Washer

Postby AL Farmall Boy » Tue May 01, 2018 9:59 am

A head rebuild (if not totally trashed) should be less than $200.

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Re: Spark Plug Washer

Postby mikes5785 » Fri Oct 05, 2018 4:35 pm

Been there done that found bottom of the plug holes Carboned up on my 49 C. You’re on the right track with the thread chaser. I used some PB Blaster to help soak and loosen the crud and grease in the lands of the tap/chaser to catch any particulate matter, took about 3 days to get it done.

Patience my boy patience

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Jim Becker wrote:
Don McCombs wrote:I'm not sure how a sparkplug washer, that has an OD larger than that hole, could have gotten down in the hole. Not saying it absolutely can't happen, but it seems highly unlikely to me. I think it's more likely to be the last few threads of a previous plug.
Or maybe deposits allowed by a spark plug that was too short or not completely turned into the hole.

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