The first thing I would say is check fuel pressure and fuel pressure drop off. Drop of is when you shut the key. The fuel system should maintain pressure for a period of time. If it drops off to 0 psi quickly, there is a leak in the fuel system. That would explain the delay cold start.
Next, with 185K miles, there could be other issues such as lower compression from engine wear. Keep in mind, steel expands when it gets hot. At a cold start, low compression would cause a hard start. After the engine is hot and everything has expanded due to the heat, compression will increase. Thus, it would cause a quicker start.
I would first check fuel pressure and drop off when it is cold. If it is within spec and doesn't lose pressure quickly, then check the compression to make sure it is within spec.
Friday, December 9th, 2011 AT 11:02 PM