Hello all

I am currently trying to carry out a full pressure test on a high pressure pump. The car is running really rough, doesn't idle, smokes a lot.

I have seen somewhere on frank masseys presentation on the delphi system that when you disconnect the injectors and the imv and crank it over with the scope connected the pressure sensor reading goes to around 4v?I am getting 2.3v. The injectors are in good condition.

I am unable to find that link with the test frank was doing. Any guidance if i am doing the test right would be appreciated.
Regards

lee