FSM
Click me for 4g15 1.5L and 4g61 1.6L fuel pressure specifications
This is the tool in question with a gauge threaded onto the top via an adapter sleeve:
Inline MD998742 site SKU OTCMD998742-01
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md998742 fuel pressure adapter.jpg [ 6.39 KiB | Viewed 2109 times ]
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OEM fuel adapter picture.jpg [ 11.79 KiB | Viewed 2109 times ]
Being as I have never adjusted an aftermarket fuel pressure regulator as of yet (still have one on the shelf), just want to confirm adjusting fuel pressure per the manual here:
Going here to confirm pressures
Click me using 6th gen GVR4 specs (2.0L but turbo), you get 27 psi vacuum hose connected, 36-38psi with it disconnected. Other turbo DSM's from this era specifically seem to use the same (27 disconnected/36-38psi connected) spec.
So, for a 4g61t stock fuel system, 36-38 psi should be good (vacuum line disconnected), yes?