Compression tests are a fine thing, they can immediatly point you to valves or rings/bore. They have been a mainstay diag tool since the invention of the internal combustian engine, reguardless of it's ignition source. You cannot argue that.
However, with a diesel, especialy these, it's usually pretty obvious what's going on as far as compression goes(if you have a little experience). And there are more backyard ways to figure it out that work about as well.
I imagine a man could drive these things all his life and through some deductive testing never have to use a compression gauge.
And you can certainly crutch an older motor with a weak cylinder along in a number of ways, this is because a diesel is a pretty durable beasty.
Now, can we go back to talking about cars please? You all know damn well a moderator is going to step in and shut everyone up at some point anyway, so give it up now, eh? There you go - your friendly moderator.
