Piston seized in block.?? - Snowblower Forum : Snow Blower Forums
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post #1 of 26 Old 01-13-2017, 08:01 AM Thread Starter
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Question Piston seized in block.??

Machine sat outside and has had water in it. What is best way to get it loose? I have loads of time to get it free. Just want to know the best method. It's an Italian made BCS tiller engine.
Thanks fellas!
This is something I have never had to deal with and all new to me.

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post #2 of 26 Old 01-13-2017, 08:11 AM
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Aluminum Block, hopefully without a Cast Iron Sleeve ?
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post #3 of 26 Old 01-13-2017, 08:17 AM
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I would remove the head and go with the tried and true 50/50 mix of acetone and atf.
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post #4 of 26 Old 01-13-2017, 08:20 AM
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ive heard people taking the spark plug out and using different things and letting them sit.

diesel fuel and mystery oil mix in the spark plug hole or just spray alot of pb blaster in the spark plug hole let it sit for a day or 2 then try to break loose with the crank bolt.

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post #5 of 26 Old 01-13-2017, 08:37 AM
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Marvel Mystery Oil in the plug hole

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post #6 of 26 Old 01-13-2017, 09:17 AM
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Quote:
Originally Posted by micah68kj View Post
Machine sat outside and has had water in it. What is best way to get it loose? I have loads of time to get it free. Just want to know the best method. It's an Italian made BCS tiller engine.
Thanks fellas!
This is something I have never had to deal with and all new to me.
Is it a two stroke or a 4 stroke?

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post #7 of 26 Old 01-13-2017, 09:39 AM
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Quote:
Originally Posted by nwcove View Post
I would remove the head and go with the tried and true 50/50 mix of acetone and atf.
I never tried marvel mixed with diesel but ATF and acetone is very effective.

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post #8 of 26 Old 01-13-2017, 10:31 AM
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Marvel in the plug hole for 72 hours should free it up. MH

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post #9 of 26 Old 01-13-2017, 05:33 PM
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GAfternoon, When you say "Get it Free", are you trying to save this engine and parts? If not, an air hammer with a chisel bit is pretty effective. If you are, taking the cylinder head off and using the acetone/ATF mixture may be the best bet. Fill the cylinder and let it set up for a few days. Then try tapping the piston with a block of wood, while trying to turn the crankshaft. GLuck, J
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post #10 of 26 Old 01-13-2017, 05:41 PM
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Acetone and ATF or Marvel mystery oil, fill the cylinder and let it sit for a few days before trying to free it up.
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