If you think your injectors are leaking causing a low-pressure condition in the morning, there's a very easy way to test that.

Turn your key to the "ON" position for 3-4 seconds. This will turn your pump on for 2 seconds. Turn key off for 5 seconds. Repeat this procedure 5 times. (Though in reality, it shouldn't take more than once or twice).

This will bring your fuel system up to pressure. Now start the vehicle. If it starts right up, you're leaking.

If you do have leaking injectors, you should also have black/sooty spark plugs.

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A.S.E Tech A1,A6,A7,A8 & MVAC 609 + EPA 608

Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.