Quote:
Originally Posted by bipolardave
Your petrol compression tester probably doesn't read high enough to work on your 220 (or at least you should hope not!). Although you can connect through the glow plugs, it's generally easier to remove the fuel injectors. If you wanted to spend the money, that would be the time to have them sent out for a proper cleaning. Don't forget the injector washers/heat shields. They're single use but aren't too expensive.
250 psi or better is the minimum compression needed to ignite the diesel, 300 psi or better means your engine should have some life left albiet with some oil consumption, and 350 or better would be most excellent. You'd want to see all pistons more or less equal as this would indicate even wear.
When you changed oil, what came out? Did you see any metal flakes or fragments?
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My pressure tester reads up to 300psi, so I suppose I could use it to see if my engine is even worth working on. As far as the injector washers and heatshields, those will have to wait until after the compression test. Wouldn't want to replace them on an engine that is scrap anyway.
Exactly how hard is a valve adjustment? I assume you'd need some special tools? I'm good with a wrench, but have never worked on a diesel before.
I'm sure I could do an engine swap with these engines, if that is the better route. I guess it depends on the cost of a used engine. I've swapped newer BMW engines with much more hoses/wiring.
I didn't notice anything in the oil, but I didn't specifically look either. It's already gone, so I'm unsure of what could have come out.