hard starting on 1995 Saab 9000

Engine starts after cranking for approx. 10 to 15 seconds.
This happsens only infrequently. After starting, engine runs normally (very smooth). Is this a fuel problem, or related?

Asked by for the 1995 Saab 9000
my guess fuel pressure regulator or check valve
1 more answer
check your fuel pump or fuel filter