Quote:
Originally Posted by Maxbumpo
No, that's wrong. The return lines are only there to return any unused fuel to the fuel system. The correct test is to loosen the nut of the metal injection line at the top of the injector. I believe it is a 14mm nut.
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On the OM60x engines it is 14mm, but on the older diesels I think it's 17mm. Either way the hard injector line has to be loosened, not the rubber fuel return line.
The OP needs to pay attention to what is being said by people trying to help him. There have been multiple iterations of the same suggestions that have so far gone completely ignored. It's really hard to help someone who refuses to help themselves.