Quote:
Originally Posted by Mudder
Can't really believe that a cap would not allow things to cool off going down the Hwy.
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Years ago I worked at a gas station in Phoenix while going to school. Most of the cars that were overheating had some type of compromise to the cooling pressue system (cap seal gone, hose hole, etc.). The pressure in the system allows it to run at a higher temp without boiling. If air is allowed in the system and it can't maintain the pressure, boiling point falls. First thing we did was to get it cooled down, then ran a pressure check on the cap and system to find the problem. Usually a hose or cap, sometimes we found it was blown intake maniford or head gasket. This was in the mid-70's when things were relatively simple, no electronics etc. Glad you found the problem, you might want to check the timing, it will make a difference too.