The dummy injector that came with my el-cheapo compression tester had malformed threads and no way was I going to screw it into my head and booger the hole... Tossed it out.

Has anyone taken a stock Bosch type injector and "hollowed it out" for making compression readings? I have some spares.

The el-cheapo tester has a bunch of other kinds of adapters and things for testing all kinds of engines via glow plug or injector holes. Glow plugs are to hard to get at with my engine, I want to do it injector style. All of the adapters have a schrader valve in them for holding pressure readings at the dial gauge. Each adapter has a quick release type coupling (like air compressor tools) to mount the gauge on any adapter.

I can find no combination of adapter parts in the kit that mate with the top of a Bosch injector where the nut screws down onto it.

Maybe somebody has done something?

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Cheers!
Scott McPhee

1987 300D