View Single Post
Old 03-29-2016, 07:16 AM   #20
san rensho
Registered User
 
Join Date: May 2011
Location: Miami florida
Posts: 1,591
Quote:
Originally Posted by Steve Tinker View Post
Yes.

The cap is probably leaking - when the coolant cools the leaking cap allows air into the system. When you restart the car, the air expands and forced coolant out through the overflow - which is what you have.

1) Replace cap as suggested above.
2) Top up coolant with distilled water / Porsche coolant 50/50 mix.
3) Open the purge valve D shaped lever for at least 3 x heat cycles of the engine or for a few days. This allows air to be expelled.
4) Top up the coolant tank each morning as the level will drop as air is expelled.
5) If the air is getting to the system because your tank is cracked, you will see moisture under the carpet in the boot.
Good advice. I would only add that you find the steepest parking ramp you can find, stop the car on the ramp with the front of the car pointing down and the purge valve openand rev the car up a couple of times. Air tends to collect in the radiators and this is the easiest way to purge the air.
__________________
Current car

2000 Boxster 2.7l red/black

Previous cars

1973 Opel Manta
1969(?) Fiat 850 Convertible
1979 Lancia Beta Coupe
1981 Alfa Romeo GTV 6
1985 Alfa Romeo Graduate
1985 Porsche 944
1989 Porsche 944
1981 Triumph TR7
1989 (?) Alfa Romeo Milano
1993 Saab 9000
san rensho is offline   Reply With Quote