12

Paul


I have a 1988 RX-7 that I am using as a daily driver because I don’t have any other use for it. In the past week, I have been getting a low coolant level warning and I do not know where the coolant is going. There is nothing under the car and the overflow tank has the right level but the coolant is low. Any thoughts.



Peter Duffecy

Is it over heating?

If it is not overheating one possibility is the radiator cap is defective.
The return valve may be not functioning.

Do you have my book "How To Cool Your Wankel."?

"COOLANT RECOVERY SYSTEM

Coolant recovery systems have been included on most new cars since 1969. Figure 20.8 shows a typical system. Coolant expands by over 1/10 of its original volume as it reaches engine operating temperature. Expanding coolant goes into the recovery tank instead of onto the ground. When the coolant temperature drops, the vacuum valve opens, drawing coolant back into the system from the recovery tank. Because air never enters the cooling system, a properly operating recovery tank system increases overall cooling efficiency by 10%. The top radiator seal (see Figure 13.11) prevents steam from escaping when the cap is turned 1/2 turn to the pressure release position. It also seals when the coolant temperature drops in the radiator, causing coolant to be drawn in from the coolant recovery tank."

Take a picture of the top of the rad and the overflow tank and send it.

Paul Lamar




------------------------------------------------------------------
Please  add your questions or comments  at the end of the thread. Not the beginning.

I am going to enforce that rule. If people don't do that it will not be published. My ISP changed the rules.

The Rotary Engine free News Letter. Powered by Linux. If you want off the list PLEASE let me know and I will remove  you.

ACRE NL web site. http://www.rotaryeng.net
YouTube  Key word "PaulLamar2". Keep clicking
this as Youtube will try to divert you to advertising.
Copyright 1998-2018 All world wide rights reserved.