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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Feb 2009 Posts: 49 New Guy | | New Guy Joined: Feb 2009 Posts: 49 | Alrighty, quick question about engines that have remained idle a while. I pulled the spark plugs out of a '69 C/50 that had stayed at rest for quite a while, and poured kerosene down the cylinders. All but one cylinder drained out, so I assume that is the stuck cylinder ... Now, on an inline six, the chances are pretty good another intake is open while this one is, so why is it just this piston is stuck? Just a random question spun by boredom. | | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | | | | | | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | if a piston is stuck it didn't have to rust all the way around. i have seen a lot that did this. also it might be the only one that has good compression. haha seriously, it might have a crack that let in antifreeze. is it #1? | | | | | Joined: Feb 2000 Posts: 5,200 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,200 | I am with Pete on this, luck of the draw! It just happen to be open where bugs, mice, or water got in. | | | | | Joined: Aug 2009 Posts: 15 New Guy | | New Guy Joined: Aug 2009 Posts: 15 | Try pouring a can of Marvel Mystery Oil down the plug hole. It has worked for me on engines that have set as long 20 years. Let it sit for a week or two and try to break it loose by hand if possible. If it is just frozen piston or rings it should work. If the bearings are froze you may have to disasemble.
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