"Jim and Becky" wrote in message
...

OK I agree, but if all six cylinders have 70-80 psi isn't there a
problem?

It could very well be. Was that the reading? Check your service manual.
The specs will be in there.

I'm thinking the 120-140 psi range is what I'm looking for based of
something I read long ago.
Hence my latest question.

Keep in mind, also, you are only allowed a certain percentage variation
between cylinders and that varies from make of engine and model etc..
Again, get a service manual. Or call the dealership. Get the correct
specs. If you don't know, you will be in trouble. A compression test
will detect the most basic defects and wear. On some engines, having a
high compression reading could mean having carbon build up, but that
mostly happens on lower RPM engines like Tecumseh or B&S engines. If
it's a EFI that should not be happening mind you. Still, get the specs,
look for variation and low compression. Anything that is out of spec,
run away from - unless you can get it dirt cheap.