Oldsmobile/Buick Repair: 1995 Buick Regal Starting Problems, buick regal, fuel rails

Question
My 1995 Buick Regal has the 3.8 fuel injected engine.  It has always ran great and has only 60,000 miles on it.  Recently it began to have starting problems.  If it sits for several hours or over night it will crank for 10 - 20 seconds before it will start.  Before, it always started instantly. After it does start it runs great...smooth and normal...power normal.  If I am just running into a store or whatever for an hour or so it starts right up and runs normally but if it sits for many hours and especially over night the hard starting problem happens again.  HELP!  I just had my AC serviced and this starting problem began after I got the car back.  I thought they might have bumped something or forgot to plug something back in but I can find nothing unusual.  

Answer
Hi David,
Sounds like the fuel is draining back to the tank out of the fuel rail, and needs to repressurize it after the long sit.
It is quite possible that something was bumped, like where the rail pushes down on top of the injectors, and is allowing air to be drawn in, thereby breaking the small vacuum that keeps the fuel from draining back.
I would wiggle the fuel rails to see if it takes care of it.

One thing you can do to overcome it, although it doesn't repair it, is to turn the key to run...not start, but just to run, and let the pump run for the three seconds that it will run each time. Then shut the switch off, and turn it back to run again, for another three seconds. Then crank it.
That will just fill the system with gas before cranking the engine.

Van