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I have a 37 Pontiac with flat top inline engine. Shows potential for a resto project. I got it from previous owner who says it was just a little stuck, didn't take much to get it free. Long story short it has everything needed to run, minus compression. It is around 50-55 across the board. I'm thinking that the rings are just stuck and need some freeing up. Just want to make sure it at least will sputter. Going o take a chance and pour some Diesel down the cylinders to get the rings free. Do you guys have any other opinions?