Crushed Spark Plug!

Skipper3
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Crushed Spark Plug!

Postby Skipper3 » Fri May 03, 2019 10:08 pm

Trying to resurrect my 28 Fisherman. Changing plugs out I discovered the spark plug in cylinder #5 of the Starboard engine the end of the plug pushed in and has broken the porcelain. I fear the worst, spun bearing, broken and loose ring et cetera. Who has encountered this? When I place my finger over the plug hole and crank I still have pressure. I fear a rebuild or repower may be in need....Aaargh :roll:

Skipper3
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Re: Crushed Spark Plug!

Postby Skipper3 » Fri May 03, 2019 10:11 pm

FYI Here is a pic, albeit a bad one.
Attachments
IMG_20190503_231045.jpg

Skipper3
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Re: Crushed Spark Plug!

Postby Skipper3 » Fri May 03, 2019 10:34 pm

Better pics
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Screenshot_20190503-233057_Gallery.jpg
Screenshot_20190503-233124_Gallery.jpg

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Busia
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Re: Crushed Spark Plug!

Postby Busia » Sat May 04, 2019 3:39 am

Looks like someone dropped it or it is the wrong plug. Is it the same as the others? Have had stuff dropped down the carb that caused bad plugs. I would make sure it is the correct plug and put a new one in.
BUSIA
located in Ketchikan, Alaska. Gods country
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Fastjeff
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Re: Crushed Spark Plug!

Postby Fastjeff » Sat May 04, 2019 6:55 am

Does it rod knock?

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

Skipper3
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Re: Crushed Spark Plug!

Postby Skipper3 » Sat May 04, 2019 9:11 am

Ran it for a few minutes last fall to winterize but haven't had it up and running since. I hear a slight clunk when I turn it over but that may be coming from a bad tooth I have on the starter (replacement on the way).

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Re: Crushed Spark Plug!

Postby Fastjeff » Mon May 06, 2019 5:50 am

Got my fingers crossed for you.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

jeboniface
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Re: Crushed Spark Plug!

Postby jeboniface » Tue May 14, 2019 2:22 pm

Flexible bore scopes are pretty cheap now a days. There are also cameras with UBS plugs for a lap top. If a ring broke I think you would be able see a defect In the outer edge of the piston.

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Re: Crushed Spark Plug!

Postby Fastjeff » Thu May 16, 2019 7:11 am

On second (or was it third?) thought, I'm hoping it got dropped and damaged before insertion. It happens. Also, I'm thinking the piston (with a wreck con rod bearing) couldn't come up far enough to smack it. Got my fingers crossed.

My buddy Harold once 'helped' me install plugs in my old Pontiac. Somehow he destroyed most of them in doing so and the poor thing would barely run.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington