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There is a YouTube channel where the guy gets all kinds of engines and tries to make them useful again. Often, they have low compression. At first, he doesn't waste time on carbs and such, he sees if he can get spark and if so, puts some oil in the cylinders, squirts gas in the intakes and sees if he can get it to fire at all. If so, he'll cleanup the carb(s) and see if he can get it to run. He did that with a VW with only one cylinder that had decent compression. When he was done, all four had decent compression.I DO NOT recommend this and I always take them apart, but it is an option. It's unlikely to hurt anything that you wouldn't replace anyway if you rebuild it properly.
There is a YouTube channel where the guy gets all kinds of engines and tries to make them useful again. Often, they have low compression. At first, he doesn't waste time on carbs and such, he sees if he can get spark and if so, puts some oil in the cylinders, squirts gas in the intakes and sees if he can get it to fire at all. If so, he'll cleanup the carb(s) and see if he can get it to run. He did that with a VW with only one cylinder that had decent compression. When he was done, all four had decent compression.
I DO NOT recommend this and I always take them apart, but it is an option. It's unlikely to hurt anything that you wouldn't replace anyway if you rebuild it properly.
