My Taurus will run for about 20 minutes and then just quits and it will
turn over right away but wont start for about 1/2 to 45 minutes.
Here is what I have changed recently:
New plugs, cap, rotor, coil
Motor has about 184K miles with new head gaskets about 10K miles ago.
I have checked the spark and everything looks good. PCV valve is ok as
it rattles in my hand. The diagnostice point to the electrical system
and the vacuum systems as the most likley.
I am suspecting something like vapor lock or some thermal related
problem, as it will restart after cooling and/or releasing the vacuum.
Any serious guesses or things to check would be appreciated, along with
the procedure of how to accomplish the task: unless it is in my haynes