Quick Head Gasket Test! (chemical block tester)
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- Опубликовано: 6 окт 2023
- Water pump froze up and the engine overheated. Before replacing the failed water pump we wanted to test the engine for a bad head gasket and this was the test we chose to do. This is on my sons 1996 Jeep 4.0L
Other Head Gasket Testing Videos I've done:
• How to test for a bad ...
• How to test for a bad ...
• Testing for a bad head...
• Testing For a Bad Head...
ScannerDanner Tools:
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Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC. 
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I think it’s time for the ScannerDanner empire to provide a nice company car to their most valuable employee. 😂😂
that is the company car....you ever hear the saying "a plumber's pipes always leak"?😁
I did! This Jeep 😆
@@ScannerDanner 🤣
@@colestowing8695 good thing there's plumbers caulk .
Hey Paul, please, please, I need your help information. I was working on 09 murano, changing one of the coils, and I took the intake off, and when I heard little something fell and for sure a little md*** nut fell inside the holes of the engine I find out it was because when I started the engine I can hear the little f**thing bouncing
My cuestion is what I can do? Or where those stupid things go when they fell inside
Can I take the valve cover gasket?
Please
In my 20 years as a tech, I never knew you could get block fluid to change back like that. Always learning from your videos!!
Me neither. Fluid manufacturers don't put refresh instructions on the bottle for some reason.
@@jba6677 gee, i wonder why
At the beginning , I thought you were testing a new BONG or It's Up In Smoke #2 ! 😄 I appreciate the lesson .
I just came here to make a comment about bong testing.
And now here we are. 😅
Learn something new today. I did not know that the fluid would clean up when you put fresh air through it.
I’d love to have Paul as a neighbor. Stand up guy in so many ways. 🫡🫡🫡🫡
I specialize in engine repairs and head gaskets and I do like the block tester test but I always back it up with a leak down test if the color doesn’t change! Put 100 pounds of pressure in the cylinders and you’ll see bubbles in the radiator coolant . Air does not lie.
Ok, but it's possible to have an hg leak that only shows up at Max load, which could be as high as 1000psi
That’s the way I like to do it to. It’ll find the smallest of leaks pretty quick.
i have found my pressure transducer works well
It actually does sometimes! That cylinder produces way more than 100 psi on a combustion event. I've had engines pass the air test and fail the HC test with a gas analyzer. That was always my go to test. Never missed one! I can't say I trust the CO2 gases the same way.
@@ScannerDanner well shit you got me thinking now ! Now I’m thinking about the combustion block test is while the engine is running and hot meanwhile, I always do a leak down test with a cold engine! I wonder if that’s a difference there? you know how things tend to get hot and aluminum swells a little bit maybe showing its true colors while it’s hot ? 🧐
Great demonstration of the Block tester! Oldie but a goodie. After learning the hydrocarbon test in which you taught me (thank you 🤝) I now use both.
Nancy was here, watching this video, thank you so much.
I clicked on this video because I though Dan we was doin bong rips. Stayed and learned something lol.
Click bait at the beginning worked then 😀
My heater control valve broke in my 96 4.0. I looped the hose and had to use a quarter to unscrew the hose clamp. Now I carry a Leatherman tool in the jeep. 218,000 miles. Best vehicle I have owned.
There's no Ray in rad.
Good stuff professor.
Love a company car that can go off road.
Happy Motoring.
It's a good thing you play hockey Paul. Your lungs are strong working that block tester tool..🤣🤣🤣🤣🤣...Great video bud.
Excellent demonstration!!
Kinda reminded me of 'our' old ways at the start of the video there Paul...thankfully those days are long gone for both of us😂👍
That’s a cool idea with the vacuum line.
Thanks Paul for another great explanation
Thanks for good information. Some of the newer cars are a pita to replace waterpumps on. Definitely want to have a good idea the heads in good shape before replacement.
Love this test, simple with good results.
i have started using my pressure transducer and it has not let me down so far
Nice work bro
I had a customer tow in a Lincoln navigator right at the end of the day yesterday. He thought the motor had blew oil all over his engine bay as he was coming back to San Diego from up north. As soon as he got to my shop, I popped the hood open to check the oil to see if I could even attempt to start the truck and I noticed the upper radiator hose had completely blown off. I’m getting ready to head to my shop and see if he hurt the motor, but it seem to run fine yesterday for the 45 seconds or so that I had it running. I made sure to let him know I need to check for engine damage first.
Guy got lucky it didn’t hurt the motor. 👍
👍 gotta love the bullet proof 4.0
Great video
Enjoy your weekend
KNOWLEDGEABLE
Love my block tester.
using the vacuume to suck on that thing is genius.
it's a 4.0. Im not even a "jeep guy" but I've seen enough of those things... you could drop all the fluids and drive to work all week and it would still be just fine.
Mine has a squeeze bulb at the top and two separate compartments one over the other for a double test. Never seen it be wrong if it is indicating a bad gasket but occasionally seen it not pick up a slight problem. My tester said in the instructions to reset the fluid by drawing air through it. It's basically a pH test.
The Cherokee 4.0 is a pretty solid engine, but the Grand 1999 and newer are more prone to head gasket failure! I have overheated a 99 and 01 grand’s without head gaskets failing.
Nice
Scrapped my daily driver back in January due to head gasket issue which appear a couple of weeks after a broken auxiliary belt in traffic. a Rover with a BMW M47R turbo diesel😮 crammed in. Over the decades changed maybe 100 0r 200 or more head gaskets over the years looked at the official procedure for that car engine combination and seriously restricted access and given January's cold horrible weather it was either an engine out job or it would be quicker to do an engine swap or just easier to find another car.
Interestingly I did a low pressure test on the cooling system and the leak into the oil pan became much worse after the test
BEST TEST FOR HEAD GASKET IS TO DO A CYLINDER LEAK DOWN TEST. Open the radiator cap or the reservoir if you dont have radiator cap and test each cylinder. pump up 90 psi into the cylinder while bringing the piston to TDC slowly while you are pumping air in it at 90psi, you will be able to tell when the valves are fully closed (instead of using the screwdriver down a spark plug to see when it's at TDI and you will never tell if the valves are all closed.
If you have a bad head gasket you will se bubbles right away through the coolant. THAT IS THE SUREST WAY TO TELL IF THE GASKET IS GONE. This test here is good if your are out and dont have the tool and the compressor. It works but I would still do the leak down test and see if there are bubbles showing up in the coolant.
I've had bad head gaskets pass the leak down tests. Cylinder pressures are much higher than anything you can do with an air hose.
It turns yellow if the head gasket's blown? Looks like the Jeep's ok but Paul has a blown head gasket.
in Paul's case, that's appropriate for the mileage.
😂
get a gauge for it. It is cheap insurance. I am pretty sure that you can swap the gauge cluster to a stock cluster that has gauges. The wiring for it to work is already there, you just have to change the temp sender and oil pressure sender.
It's like a bong
Tested engines that had bad head gaskets, not having ran for hours, by immediately placing the tester over the radiator/reservoir after cap removal, tester receives residual hydrocarbons trapped within.
Ive done so many block test an had no clue you could change the fluid color back to blue LOL Id usually poor it out if it changed an if it didnt put it back in the bottle
This is normally stated in the instructions that come with the tester or fluid...but who reads the instructions..right?😂
I didn't use them right either in my earlier videos. 🙂
I sure as hell didn't until about the 3rd or 4th one I did. 🙄
@@simonilett998 haha im sure it did but your right I didnt read them 😂
The thumbnail....😂
👍
Those 4.0 straight 6 are bulletproof
Flush radiator too
Temperature, oil pressure gauges with red light and should also have a buzzer.
I thought you had taken up drugs for a moment there. Phew!
I driven nice cars most of my life because of people burning up their engine...
No need to buy a brand new car when i own an engine hoist and 3 kinds of vice grips.
Never seen a block tester... man that would have come in handy a few decades ago.
Pull the oil stick , look to see if the oil is shiny , white , black , clear , low reading , high reading , each type is an indication of the status of the oil and block
That is a test, but I've had plenty of early headgasket failures with zero evidence with the oil
Like videos
Hi boss my car a.c has 100 plus and minus 50g i put 340g in it does that enough and i see the low side gauge trimbleing and the hight side gauge stable
is there a crack in the power steering pump pulley ?
I`m pretty sure the water pump has been making noticable noise LOOOOOONG before it seized
I've got a 2006 bmw m5 giving me bank 1 code but my Autel ms908 stopped showing my bank1&2 02 sensor so I can't see live data? Works on a Ford truck can see1&2 banks live?
Scannerdanner do you have a spec or is there even a spec for the ppm of hydrocarbons in a cooling system. Obviously there should be none but I know the analyzers are not 100% accurate?
Anything more than 100ppm was the number I'd use.
IT hard to kill a jeep 4.0 liter inline 6.
Another good one
Just say RAD Iator since we are used to you saying it that way.
What device where you using
Block tester. I have it listed on my Amazon Affiliate page
www.amazon.com/shop/scannerdanner
Does coolant coming out of rad on cold start mean bad head gasket
Most likely
But what is weird does not run hot no milky oil. Nothing out of the ordinary. Xterra 4.0 engine. @ScannerDanner
@@shanemartin6822 what made you check that? If there is no fluid loss, no overheating, no misfire symptoms, then I would worry about it. Maybe some type of water pump design? I don't know
@ScannerDanner I was told to check for air bubbles in radiator and when I did with both caps off it shot the coolant out of the radiator neck.
@shanemartin6822 for what reason? What are your symptoms?
Hi, I would like to know how can I get hold of your book?
From my website at www.scannerdanner.com
Thank you!
bromothymol blue....yaaa ;)
Iron on iron!
Look like bong water you blowing in the tester
Strange looking Hookah. 🙃
🤣🤣🤣 Idiot light. G O L D. 🤣🤣
So the head gasket test in the beginning of the video clearly failed. He was blowing for all it was worth and it turned yellow.
Had one or 2 i was certain were blown and this test did not work.
It's definitely not 100%
Isn't it safe to say that the five gas analyzer is far less likely to give a false positive because there are more possible sources of co2 (broken flex pipe, nearby humans, etc) than uncombusted aerosolized hydrocarbons? As another RUclipsr said, the only thing worse than a positive hg failure test is a false positive hg failure test.
Anything more than 100ppm HC, with a repeatable pattern is confirmed. Never missed one, not one, with that method
@@ScannerDanner has it ever produced a false positive?
@@MindsDozernot once. Except for a purge valve line broken right at the overflow bottle and the normal delay of the gas analyzer was messing with me. The repeatability is what is key to this test
Hey Paul I see you are a very smart man, however when I saw you pulling air in thru that block test liquid just told me the concern of the repair you lost your mind to prove a point. Use the car's eng vacuum to save your lungs. Pushing out no problems but intake, well they are your lungs. Now that test you just did is not really a valid one because you did not have moving coolant because pump was down. As one of the comments 100 psi is the better way . But you did say that due to the condition the head gasket may fail sooner or later and any customer has to realize this unless they are the ones that think everyone should pay for their screw up. I'm quite sure that water pump was making some kind of noise but the tunes canceled the sound. Yes I was a young kid once upon a time, stuff happens. CYA every time Mr customer due to you overheating this excessively due to no coolant in the system I really am not thrilled to replace the W/P thermostat because it may be a ticking time bomb before the head gasket will expire or something in that order, the choice is yours but you are warned. What would you like to do with your vehicle that has 100K 200K on it ? Please never suck with your lungs that is why they got vacuum pumps for, stay healthy I learn from your video's even though I retired from a MB dealership.
First bro