How to Pressure Test Vehicle Cooling System 

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I really like this guy's voice. It's calm, confident, and reassuring. If he was a doctor and told me my spine was snapped in half, I'd be like "Oh, cool. Thanks man!".

Seriously. Has any one found a place with better more thorough DIY vids than these guys? Thank you!

Anytime a clamp is this corroded, the hose has been leaking a few drops everytime system was at full pressure. That hose needs to removed from both ends and cordless drill with 1" wire wheel to scrub the salt crystals out of the rubber for the full distance it sits on radiator port. The port also scrubbed clean., do the same,on other end to water pump. For absolutely no leaks from hose again, smear 3M yellow trim adhesive fully set in area of hose scrubbed, and now remount with good clamps. Adhesive needs to be fully set but finger leaves impression in the glue. You'll see obvious corrosion where it connects to water pump when hose is removed. . If salt crystals are not removed from hose, doesnt matter how tight the clamp is, coolant will leak. Same with radiator cap, the rubber seal to tank and relief valve disc needs to be cleaned of any salt crystals. Now,do the same to all the hoses, and never have leak issues again, where one will end up blowing head gasket if not detected it low in time. Cheers

Good video, thanks! Will a coolant pressure test reveal a possible head gasket leak?

I had a coolant leak fixed was oil cooler line or something but i still smell a sweet smell threw my cabin vents.

Oh Another question how long does it take to have vehicle pressurerized..my vehicle plastic radiator goes below the line about every 2weeks ..have to refill with water..the mechanic says to stop it bc it refills on it own..we had a replacement of some sort bc car was running hot & wanted to look at while warranty..but ...so my question is..is the mechanic right..to let it go empty and leave it along????..the vehicle is 5yrs old & since we paid to fix it ..should the low water be an issue since doesn't see any leaks???

Thank you for the detailed video👍

Can a test cause leaks? Just did a test on my 4.6 ford and it seems to be coming from under the water pump but the weep hole is on top for some reason? Never saw a leak here prior to

Would a pressure test cause more harm than good?

Great info, thanks!

Dont forget to plug off the overflow tube that just vents on the fender

When I did this, air just bubbled out of the overflow tank and it never built pressure

DISTILLED*** water.

Thanks for sharing.. My question is how much pressure need to pump inside cooling system.. Is it same as stated at radiator cap.. i.e 1.1 bar.. Or slightly above 1.1 bar..?

what does it mean if you get a very slow leak....and cant find the leak ?

I have a 2001 Silverado 2500HD and it appears the coolant is coming from the rear of the engine. I was told that it was most likely a cooling system crossover line under the intake or at the rear for the engine under the intake. Is there such a line under the intake?

does the cooling system have to be empty to pressure or vacuum test it?

The pressure tester link that you will give isn't the same pressure tester shown in a video 🤔🤔

Great video. Thanks

Mine doesn’t build pressure when I pump it

thanks, Andy.

I pressure checked an HHR. When I was done there was pressure still in both the heater hoses. Is this normal? Would the water pump pinch it off between there and the thermostat?

How cool should the car be or if been driving less then 15 minutes is fine

I have the same truck and last week my truck started overheating found that same clamp broke in the same spot

I did this test on my grand prix, it held 0 pressure what does that mean I know I have a leak. Does the coolant system need to be full of water/coolant be fore the test can be done correctly?

Hi my car radiator reserve tank always has pressure even after it sits for a view days,but there is no sign of water inside the motoroil or loss of coolant.what could be the problem?

What happens if you push too much psi?

When you say top it off, do you mean fill it up to the max line, or all the way to the top close to the cap?

I wish mine was this easy. Can hardly even get pressure in the system keeps leaking pressure from overflow and also the radiator cap. I guess I get new radiator cap and will have to block the overflow then try again. Cooling system in subaru wrx is a nightmare.

Everyone shows you how to do a pressure test. Know one goes into details of how this is a valid test to pressurize the entire system when, doing this cold means the thermostat is closed and if im understanding things right, this means you are only testing half the system..

What if water is coming out weeping hole on 08 dodge charger 2.7l engine.

I have a coolant leak for the past four years still can't find it it's definitely in the engine compartment though because that's where I smell it maybe it's just coming from the overflow there is a little escape hole In the reserve overflow my coolant I rarely have to add any ... It's so minute but I definitely smell it unless of my nose is tricking me and I'm smelling something else Could it been possible That's some coolant in the past got in somewhere and evaporated and the residue stayed behind and it keeps getting wet or something I just don't know what to do... I have no visible signs of a leak underneath at all of little bit with an oil leak but that's because I need to do the Valve cover gasket The mechanic forgot to put a little bit of RTV silicone in certain key areas Over the timing chain cover You're supposed to actually put a little drop of sealant.. He never did it.. But yeah I can't find it it doesn't overheat it stays perfect temperature all the time even when it's 115 outside And just idling if it wasn't for the smell I wouldn't know anything

Should you remove thermostats?

Thanks

great stuff

Im trying to help my sister. She has a 06 Kia Sorento and the coolant blew a pin hole in the reservoir. We replaced the reservoir with a new one. It blew another tiny hole into it. So we replaced it with a junkyard one. it blew hole in the upper radiator hose. We replaced the hose. Now i want to be on my A Game and fix this problem. I'm going to get a pressure tester and start from there. Fans are working, New coolant.. replaced the ECTS(engine coolant temperature sensor) too, due to a code. P0118. I appreciate any help, I will also look for an experience mechanic around my area.. I don't live in the city

How can coolant leak past the thermometer if you're engine is cold?

At first I thought he left the signal on but then realized that was the background music.....

everyone seems to be checking at the bottle....not the radiator

Where can we get the same pressure test tool ??

His head is shinier than the top of the car

Looks like your up north where it snows based on the rust .

Just to find one leak I'm not spending between £55 and £75..if I used it numberous times then yeah but, for a guy at home? Way to expensive for a single use

Cool! 🙂👍🏿🔧🚘