W124 1995 E320 28,000 miles won’t start


Hi everyone, my ‘95 fuel pump and leaking line replaced, this has not helped difficult starting the engine. I’m using premium fuel always, runs perfectly once she starts. The 30,000 mile Service was done early months ago. The car still will not start up unless I pump it twice.
Is there a gas additive for these engines, or, suggest something I can do to remedy this difficult start issue, short of seeing a mechanic? Also, does pumping the gas a few times make a difference one way or the other, just before turning the ignition? Benz beginner here. Thank you for any help. Bob


