Turn the key on for 3 seconds, then off. Repeat 3 times. If it starts quickly, you're losing fuel pressure when the engine is off; could be a faulty check valve in the return line or regulator.

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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.