I would like somebody tell me what is the compression deference between piston in the engine. 10% or more.?

Question

can you all give me a site or direction in internet to read about this.

Answer 1

Rule of thumb is to have the compression within 10 % of each other.

So, if your car was supposed to have 150 PSI, the lowest you would want to see another cylinder would be 135 PSI, although I would rather see them within 10 psi of each other.

What make and model car? Provide that and I'll tell you what the compression should be.