stuck engine

  • arobsum
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stuck engine

10 Jun 2007 13:42
#148061
i found this old bike that had been sitting in a garage for years. trouble is, the motor is stuck. i filled it with wd-40 and let it sit. no luck. anyone know of any tricks i could try short of disassembly? everything else seem to be in order.

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  • Duck
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Re: stuck engine

10 Jun 2007 14:17
#148063
If it's the pistons that are stuck, and it may not be, I've had good luck with ATF or Marvel Mystery Oil and PATIENCE. Letting it sit for a week helps a lot. Put in 2nd gear and rock gently to free up. You don't want to force it or you'll end up ith more trouble...
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XXXXXKawPen:the other green meat

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  • wireman
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Re: stuck engine

10 Jun 2007 15:19
#148073
gas/trans fluid

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  • clone5
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Re: stuck engine

10 Jun 2007 15:43
#148076
Eucalyptus Oil. Best penetrating oil ever!

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  • BSKZ650
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Re: stuck engine

10 Jun 2007 15:50
#148080
do the Duck deal, if that dosent work pull it apart
77 kz650, owned for over 25 years
77 ltd1000, current rider
76 kz900, just waiting
73 z1,, gonna restore this one
piglet, leggero harley davidson
SR, Ride captian, S.E.Texas Patriot Guard Riders.. AKA KawaBob

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  • arobsum
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Re: stuck engine

10 Jun 2007 16:44
#148094
i didn't even think of trans oil. thanks! i'll put some in it tonight and report back with the results. thanks for the help.

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  • Patton
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Re: stuck engine

10 Jun 2007 16:48
#148096
Might also try PB BLASTER which is specially formulated to loosen rusted bolts and fasteners. Not saying it's any better than those already suggested, but it works well. Would let it penetrate for a few days, and replenish daily. If doesn't break loose, allow it to soak a few more days. :)
1973 Z1
KZ900 LTD

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  • Leather
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Re: stuck engine

10 Jun 2007 17:14
#148101
a heat gun and some caution.
If you'll warm the outter area of the cylinders around the middle of the jugs and let the cylinders expand while the oil works down. a few times of this warm then cool then warm treatment should help!

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  • Frank
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Re: stuck engine

10 Jun 2007 17:27
#148104
Diesel thats all you need, let it sit over night or longer. Try it.

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  • arobsum
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Re: stuck engine

11 Jun 2007 18:19
#148488
the trans fluid did the trick. let it soak overnight and presto. moves freely. a good tip guys, thanks. it still seems to have decent compression too.

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