8th Generation Honda Civic Forum - View Single Post

BigT · 11-08-2007, 11:53 PM

Some auto parts stores like Advance and Autozone will rent you a coolant system pressure tester. This is the best way to check for a stubborn leak.

If you pressurize the system and leave it for 5-10 minutes the pressure shouldn't have dropped much, maybe a pound or two. While you are waiting you can look for a leak. Just don't put too much pressure in the system. There is sometimes a pressure rating on the cap. If not 7-10 pounds is pretty safe and probably sufficient to check for a leak.

If your coolant level in your radiator and reservoir isn't changing it probably isn't much of a leak.

11-08-2007, 11:53 PM	#12 (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: 2,933	Some auto parts stores like Advance and Autozone will rent you a coolant system pressure tester. This is the best way to check for a stubborn leak. If you pressurize the system and leave it for 5-10 minutes the pressure shouldn't have dropped much, maybe a pound or two. While you are waiting you can look for a leak. Just don't put too much pressure in the system. There is sometimes a pressure rating on the cap. If not 7-10 pounds is pretty safe and probably sufficient to check for a leak. If your coolant level in your radiator and reservoir isn't changing it probably isn't much of a leak.