leaky radiator hose diagnosis please

[billschroeder5842]

So, this today, I'll presure test the system---cold. Hopefully it will show me my problem.

Questions... is it better to pressure test from the radiator cap or the coolant reservoir cap?

Logic tells me that either side will work, but is there a preferred methods and why?

Thanks!

[RussMcB]

Originally Posted by billschroeder5842

So, this today, I'll presure test the system---cold. Hopefully it will show me my problem.

Questions... is it better to pressure test from the radiator cap or the coolant reservoir cap?

Logic tells me that either side will work, but is there a preferred methods and why?

Thanks!

Good question. Do both hold pressure? I can't remember.

The Stant tester tests both the system and the cap(s). So, I suggest first test the radiator caps to see what pressure they release at. Then, if you find the cap releases pressure at, say, 15 lb., then pressure test the system at 2-3 lb. higher.

By watching the needle (how fast it drops), you'll also see if you have a big or small leak.

[secondchance]

Don't over pressurize. One of WAZOO car had a blown heater core which MAY have been the result of over pressurizing at the dealer service looking for coolant leak.
Heater core is not fun to replace.

Another possible leak area is radiator plastic tank (assuming you still have OEM radiator). These typically crack about 1/3 way down from the top.