Before purchasing a used engine, be sure to inspect it thoroughly. Check the tires and other rubber components to ensure they're in good condition. Be aware that a used engine might have higher mileage than it says. Be sure to ask about the mileage. Occasionally, an engine can be a few thousand miles more than listed. It's also possible that the engine was recalled due to an accident. In that case, a new engine might not be the best choice for you.
When purchasing a used engine, you should check the compression. If it's under ten percent, then it's too tight. But some guys will go up to fifteen percent. That's normal. As long as the compression differential is within the range of five to ten percent, it's a good sign. Otherwise, it's best to pass on that particular engine. The price of the used engine will be much higher.
