8th Generation Honda Civic Forum - View Single Post

BigT · 11-08-2007, 12:11 AM

Coolant leaks often only show up when the engine is hot and the cooling system is under pressure. If it leaks on a hot surface it can evaporate quickly and be very hard to detect.

A pressure tester is very helpful in this situation. It allows you to put pressure on the system when the system is cool and the engine isn't running. If the pressure drops then you have a leak. It should also be easier to see the leak with a cool, non running engine.

If you suspect a coolant leak you should always check the radiator level as well as checking the reservoir. When the engine is cool remove the radiator cap and make sure it is full.

11-08-2007, 12:11 AM	#4 (permalink)
BigT Senior Member Join Date: Jun 2007 Location: Duff Beer Krusty Burger Buzz Cola Costington's Department Store Kwik-E-Mart Stupid Flanders Park Posts: 2,929	Coolant leaks often only show up when the engine is hot and the cooling system is under pressure. If it leaks on a hot surface it can evaporate quickly and be very hard to detect. A pressure tester is very helpful in this situation. It allows you to put pressure on the system when the system is cool and the engine isn't running. If the pressure drops then you have a leak. It should also be easier to see the leak with a cool, non running engine. If you suspect a coolant leak you should always check the radiator level as well as checking the reservoir. When the engine is cool remove the radiator cap and make sure it is full. Last edited by BigT; 11-08-2007 at 12:32 AM.