The classic cause of long cranking times on this engine is a failed fuel pressure regulator. When it fails it lets pressure in the fuel rail bleed down over time rather remaining pressurized. Although 30 seconds sounds too long - I'm of the impression that 10 seconds is a more typical "long crank." Quick check is to pull the vacuum line off the pressure regulator and see if there is lquid gasoline inside. If so, it's definately bad. Thorough check is to attach a pressure gauge to the fuel rail fitting and monitor pressure over time.

There are some other possibilities - leaky injector, perhaps even fuel pump problem - but pressure regulator seems to be the most common. How does the car run when finally starts - good, or a bit funky?

- JimY