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  1. S

    Can somebody explain the concept of pinch test.

    Let me try to explain this concept that I understand it correctly. If the LSN is set too rich, when idling, excess fuel builds up in the engine and therefore takes longer time to burn when we pinch the fuel line. Rich doesn't necessarily mean it's going to burn out faster, it just means that...
  2. S

    Can somebody explain the concept of pinch test.

    Thanks guys, I guess everyone has their own way of tuning. But the tuning guide by Purenitro is great and easy to understand. I'm going to try it out.
  3. S

    Can somebody explain the concept of pinch test.

    PINCH TEST- Make a couple top speed passes, bring it in and pinch off the fuel line near the carb. Start counting 1...2...3... It should run for about 3 seconds before it revs and dies. If it runs longer you need to lean the LSN. If less than 3 seconds you need to richen the LSN. When...
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