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Look through the low power FAQ article. There's a vacuum diagram for the ALH engine. It should be similar but at least give you an idea of how it should look.
You can swap the N75 and EGR solenoid as a test. Change the plugs, everything. If that fixes your problem, you have determined that the N75 solenoid or its wiring, or vacuum line are bad. Inspect the wires and vacuum line all the way down to the turbo.
You can swap the N75 and EGR solenoid as a test. Change the plugs, everything. If that fixes your problem, you have determined that the N75 solenoid or its wiring, or vacuum line are bad. Inspect the wires and vacuum line all the way down to the turbo.
