Robert 300CE compression test

[@TrainerTakumi]

I heard you're supposed to charge the battery between each cylinder

[@archygrey9093]

I did the same test for my w126 300se, seemed to average about 125 - 130 psi which did not seem ideal to me but was at least consistent. Yours has a massive difference in pressure.

[@fredjan678]

MY 300sel is the same 130-135 PSI it seems those engine has low compression

[@pierresimenc1856]

While cranking, you have to push the accelerator down in order to open the throttle. Otherwise your readings are too low.