Using a Block Tester to Find a Headgasket Leak

[@jaimerobles4228]

Mechanics 😊 Customers 😢

[@dylanwatson202]

Proud of you dad!

[@barrysuss4421]

thanks

[@GripFreak]

This test is not definitive on diels with an egr cooler. If no egr cooler this test is 90 percent accurate. Thanks for sharing the video!

[@MyScotty7]

Does the engine need to be hot?

[@guillermojuarez3651]

Thanks for sharing, you know I want to use it in a lincoln town car, I can't find the pressure-relief cap from the radiator, can I use put it on the antifreeze reservoir? Thanks

[@roberttophan9314]

So use the block tester on coolant reservoir?

[@hunterautomotive4842]

That’s not a just a reservoir it’s a surge tank. It’s part of the pressurized system.

[@denverkenyon3203]

That’s cool

[@jadondanielson4244]

Very cool kanye

[@guymiller9212]

I have a ? What was the signs you had before this test

[@hunterautomotive4842]

Overheating and loss of coolant but no visible leaks.

[@gabrieltrevino8212]

Do you add water to it first?

[@c.h.u.d]

No Kool aid..OH YEAH"

[@DJ-tn7vj]

Not always accurate

[@Careless_is300]

This is one of the most accurate and cheapest ways. Not everybody has a leak down tester and an air compressor

[@martymartime2446]

Okay but it could be leaking cat or egr. Doesn’t always mean head gasket

[@jevonrussell3159]

@@martymartime2446what is cat or egr? I used this same block test and mine changed colors as well. But when I do an oil change I see no leaks nor any foaming murky color oil. I don’t think I have a blown head gasket or at least I hope I don’t.

[@nightmare2481]

@@jevonrussell3159 How can i find this tester because my car is overheating

[@project370z]

I done this test and i got yellow colour of liquid, we found out egr cooler was leaking .. we replaced the egr and , replace coolant and re do test.. liquid stayed blue.. so not always is a head gasket

[@medini2]

You are putting the block tester on the antifreeze reservoir, right?

[@hunterautomotive4842]

There is no reservoir on this vehicle. This is the surge tank, which is like a reservoir except that it is part of the pressurized system and has the radiator cap on it.

[@medini2]

So, it appears I cannot do this test on my car without draining maybe a gallon of antifreeze from the bottom of the radiator. Should I do this? Should I disconnect the hose that goes from the radiator to the reservoir?

[@Jordan__Sloan]

Just 3 inches below, so it doesn’t suck radiator fluid up, suck air through for 1 to 2 minutes on a warm motor. The small hose that goes to reservoir will be blocked by the rubber on the tool

[@barrysuss4421]

@@Jordan__Sloan what if coolant keeps slowly rising out the radiator cap? I suctioned out around 48oz and still slowly rises enough to where when I put the tester on it will suck out coolant, do I have to drain the radiator at the bottom?

[@ronaldoquintos1675]

You are sucking coolant into the tube.

[@mikemittelstadt8748]

Nope, there is a one-way diaphragm (check valve) on the bottom seal. Otherwise, the fluid would actually leak down into the reservoir, but without it, you would be correct

[@yamfingaz5598]

No hes no, then why is the level not going up numb nuts