$20 Amazon HeadGasket Tester! How to test your gaskets at home.

I decided to demonstrate this cheep headgasket checker from Amazon. Just be ready for the possibility of a BLOWN headgasket...

[@haz_jun2442]

Thanks, very helpful

[@hhova29]

Nice video. I just ordered one to test on a potential commuter car I’m interested in. The fluids and all look good but u can never be to sure and at least I can throw plates and drive her to a shop for inspection.
Do u think I can also do this same procedure but from the coolant overflow reservoir instead of radiator??

[@Dartmech]

Should work just fine, the coolant will end up in the reservoir eventually.

[@jonmullaly7497]

Thanks

[@user-sm2ez8mo9h]

What is the meaning of light blue colour?

[@pitboss2617]

Would you advise to siphon off a cup of coolant before taking the test?

[@Dartmech]

Yes, if it’s too full it’ll creep up into the tube.

[@albertnelson2868]

very helpful!

[@Dartmech]

Glad it was helpful!

[@campcop9214]

Why was the coolant sucking up like that?

[@Dartmech]

Coolant expands when hot so without a pressure cap it will flow out. Thats why I recommend draining a bit out first.

[@campcop9214]

@Dartmech makes sense. Do you know why the level goes up when removing the cap cold. Like a suction pulling some up and level rises abit, can hiss a bit aswell removing cap

[@pierluigicicinelli3361]

thanks for your video but what about the test is reliable?

[@Dartmech]

Its pretty reliable. The chemistry involved either shows a leak or it doesn't. Pretty solid in my opinion.

[@slowattougeracingteam69]

What does a lighter Blue mean 😅

[@Dartmech]

Yellow and green mean headgasket leak most likely. Any change from blue is basically bad news 🙃

[@slowattougeracingteam69]

​@@Dartmechthanks for your fast answer, with light blue i mean it looks like the "new" one/ the one on the right at 5:57

[@LamoidZombieDog]

I just got one, this thing is junk. It doesn't work with Honda because Hondas don't build pressure if you take the cap off

[@Dartmech]

It just uses the air vapor in the system. You don’t want a lot of pressure with them. The car that needed the headgasket had an open coolant system.

[@LamoidZombieDog]

@@Dartmech I'm not saying you need to build up 50psi, but any gas that's coming through needs to go through the tester. In the case of a Honda, there is a hose going through the cap where is where that gas exits from, the hose doesn't go into the side of the tank, so all of the gas escapes through the cap and won't go through the tester. And for the radiator, it just does not fit into the radiator. So this tester is completely useless for Hondas and I had to return mine.

[@OneYearAgoT0day]

​@@LamoidZombieDogwhy couldn't you just cap that coolant overflow hose. Throw a bolt in there and be on your way. Could've also trimmed down the rubber cap to make it fit. Sounds like you shouldn't be working on cars, just take it to a mechanic bro