jdx8 compression

[sd300]

friend at work is trying to get one to run. It has spark and fuel but no fire.

What is the guide line for compression in these engines. He is going to test it this weekend but does not know what is acceptable.

Thanks bob

[JDT]

150 would be good.
130 would work.

But what ever it is it should be close left to right.

Might want to concider seals.

And if it does not fire try switching the red and white coil wires around and see it it barks then.