My Porche has had a power drop, often when rpm's drop suddenly as in coming down a hill. The idle gets rough and smooth acceleration is lost
The only cure is to pull over, restart engine and the car resumes full power
We have checked everything we can think of and fixed it.. ie rotor, wires, fuel pump, gas tank cleaned and filter cleaned etc
We did a smoke test and found numerous vacume hoses were leaking under the intake manifold.. could this be the cause?