@@DavesAutoCenterCentervilletruck frames aren't straight. They don't stay straight, and many don't come straight from the factory. They handle like garbage. They need diagonal "spokes", just like a bicycle, except on the truck frame. Forming an "x". One inch bolt, near the rear cross members, should be fine. Build a mounting plate or backing plate, or hanger for it, and thread it through...... Then tune it just like you tune a bicycle wheel. You're welcome. I will call your shop to confirm on Tuesday. October 22. When you make a video about it, just say Sasquatch told you about it. Also, unibody vehicleS can have similar "x" installed and formed into the design of the floor, with bolts that can be tensioned to straighten out the frames....... They aren't perfect from the factory, and don't stay perfect. When you're on ice, the car MUST be straight. This should have happened 140 years ago with the invention of cars. It would be the first "safety" feature of a car. For some reason they are obscenely expensive, and they aren't even tuned for alignment and handling. It's obscene. Adjustable rear subframes don't counT, because at high speed, on ice, they weathercock - from different air drag across the warped body.
I have worked in the engine testing world for 20+ years and JTec flow meters have been used for blow by measurements in many applications. Super simple reliable product with excellent support if ever needed. Ziptie that meter under the hood and run the cable in the ca, check it out on a drive.
Diagnostics are just as important whether you client is a truck or a person. The more data you have the better you know what if anything is wrong. Great Videos Thank You 🙏
I saw it and said I know what this thing is about to do! And it was even worse than expected. That good ole 6.4 never lets you down from being much worse than expected
You know an engine is bad when some shops won’t even work on them. I had one for a while and chose to let it sit and rot into the ground after it wouldn’t fire after shutting it off one day. I run 2 pre emissions NPR’s for my landscape company and couldn’t be happier. Looking for a nice LBZ but haven’t found the right one yet.
should go talk to the camper pullers before i quit in 21 i knew several with old dodges with over 1 million miles i parked 2 after 600k the 6.7 was running so good they couldnt diagnose why the fuel mileage was dropping. I had enough to do one of the 2 things that needed done but since it was still running so good they said ya have to change both the pump and injectors. changing one would kill the other and probably take out the engine.
Thank you, Dave. I learn something new every time I watch your channel. I am a novice when it comes to cars. My trade is hvac/r. Your channel is one of three I look forward to watching daily. Thank your son for starting this channel.
Hey Dave, y'all basically did a FEV1 test in the beginning of the video. FEV1 stands for Forced expired volume in 1 second. It's a great test to assess lung function in COPD and other obstructive vs. restrictive lung diseases.
A way we test blowby in tier4 emissions equipped engines is by disconnecting and blocking off the ccv system and installing the blowby gauge inline. This gives a more precise reading of blowby and a better indication of ring/cylinder wear if your looking to gauge it. I love the oil cap technique though. The reason those later model engines blowby went down may have been due to the ccv system opening up more and pulling that through
My career as an engineer continually taught me proof is always in the data. Collecting data then quantifying it to identify trends, making comparisons, and supporting arguments with statistical evidence is CONFIRMATION . . . . DONCHA LUVIT!
Blow-by was always a parameter that we measured at Cummins Illinois/Cummins Northern Illinois as part of the dyno test. As I recall, It's been about 25 years or so, 3" H2O (might have been mercury) was the no go spec.
Well Dave, your new blowby toy tells us that the rings have failed, this is very vital info, as ANY missfire will cause oil contamination by fuel and carbon particles, with only a few thou clearance on journals etc, it becomes obvious why engines sieze or run their bearings. You and Lake Speed are highlighting the real seriousness of oils, but also the point that lots of factors also play into this situation.
Hey Dave. Appreciate the info...Also one thing to consider on the used car inspection, at least in our area, dealers dont wanna fix or take money off for things that are wrong with vehicle....
When I have the money, I will totally bring my 2001 toyota 4runner to you for a full engine break down, repair, clean, rewire, and some interior fixes. You'll have fun with mine. Also it would be interesting to see you convert a 4runner to diesel.
Breathalyzer for your engine.😂 My Grandfather used to homebuild mercury filled manometers back in the 60's to diagnose blow buy. He was a mad scientist for his time.
I told you how to fix and prevent this but you are not interested. There are none so blind as those who will not see. Good luck with your senseless rebuilds.
That's an awesome little gadget I've been looking to buy a Duramax but so many of them in my price range they have 260,000 to 300 and some thousand miles on them love them guys say no blow by but I'd hate to end up buying one and have problems because they're so expensive 2 rebuild blossom video buddy keep them coming
We have one at work with the Allison transmission, and I can't recall it ever needing anything at all with those miles. The only thing is 5k mile oil changes, and a battery replacement all its life.
Well for one, “duramax” could mean a complete pile of shit, or pretty decent. Know your different models and the issues with each year, not just the fact that it’s a duramax. It’s the same for powerstrokes or even Cummins.
Interesting test! Would you say that excessive blow by is a sure symptom of excessive ring wear? And if so, would that be primarily caused by a history of missed service intervals and/or the wrong oil chemistry?
I feel like this video is THE video I've been waiting for for a long *%$ time now, I don't know or remember if there is a similar video to this or not. What I do know is that I wondered about the true seriousness, for lack of a better word, about the blow by on my diesel truck in a more scientific approach with numbers to back up weather or not I should look into getting a rebuild done or wait.
It’s amazing you got that many trucks with that much blow by and most of all the manufactures don’t care whatsoever to improve the system and make it better where there’s no blow by no drag cars they do it and they take care of it on blow by an over 5000 hp but these trucks heremanufactures incompetency of the motor properly last 300,000 or 500,000 miles
Always love watching your diagnostic stuff but this one showed the differences between known reasonable engines and that poor thing that couldnt warm up,,, wanna see what one of your speed of power engines does, after a break in period
I just blew a head gasket on my car, I never filled up the coolent overflow for about a year, I recall squeezing the main hose and hearing/feeling air but never thought it was a big deal until now I have major blowby and it smokes white. Sucks to suck
You should call this the “15,000 mile oil change interval” test. I think we all can tell which truck owners didn’t fall for that “3-5k oil change “scam”.
You and your blow by freaked me out. I have a 2012 TDI and check the cap, boy was it dancing and everything. Come to find out the vacuum pump is vented into the valve cover.
So how can the pressure test from the oil fill cap be accurate if the motor has a breather tube/line coming off the valve cover or the crankcase and just dumping the vapor into the atmosphere ??
Hang on . Did I miss something here . . . Measuring from the cap will cause invalid results unless you block the breather pipe as your bringing a 2nd breather and factors such as breather filter restriction and air filter restriction into play . So either measure at the breather into the intake or at the cap and block the other .
Question What’s the point of a crankcase breather? The blow by is still occurring past the pistons so what is causing the numbers to change? Is it that most is being recirculated back into the intake? So the new breathers just going to plug up and still just as much wear and tear - waste of money to replace or would you recommend?
OMG peoples need to learn to take care of their trucks !!!!!!!!!!!!!!!!!!!! i pulled campers for years 04 5.9 cummins have almost 0 blow by cap sat like it was not running had 616k miles, 07 6.7 cummins was deleted when i got it, at 607k miles you would see just a puff of smoke come out the oil cap once every couple minutes... I got a 19 Ram that had a bad EGR from get go dealerships blew me off as i was complaining about low turbo pressure( they said normal brreak in had 14k when the problem started) at 74k miles it finally set the engine light on they charged me to clean the EGR, 2 days later i was broke down with the EGR stck wide open 10 days waiting for part in hotel and 3000 more dollars, after that it had blow by and used 2 quarts of oil every 5000 miles. after 10 more months of arguing truck had 170k on it i said come and get it... To me warrenty should have covered it because problem started at 14k and there is 4 dealerships that have records showing i had a complaint from the 14k to 20k but not one of them had any notes of why i was complaining...
Doesn't a clogged filter push any extra through the cap you have on? So replacing the crank breather filter let's more air through the filter and less through the test equipment. Meaning it's not reducing the blow by??
Exactly my thought. I think Dave is missing the boat on this a little bit? And a new crank case filter will do absolutely nothing for improved efficiency and power.
I didn’t see you blocking off the normal crank case ventilation systems on these trucks, therefore this testing is pretty irrelevant and inaccurate. Crankcase gases are escaping through ventilation system while you’re reading what escapes by the oil cap, so you are only reading some of the blow by on each truck. Secondly, such as on Cummins engines, you have to account for vacuum systems which exhaust into the crankcase, and will give a false high if your vacuum system has a leak.
![ตีสิบเดย์ [FULL] | เปิดใจ "อาจารย์ เบียร์ ฅนตื่นธรรม" นักสนทนาธรรมสายดุดัน!](http://i.ytimg.com/vi/vqaBI_mnoDk/mqdefault.jpg)
Awesome! Probably the first person on TH-cam to do real world testing on a Cummins 6.7 before and after a CCV filter change. Bravo!
When Dave blew into the meter, he was way over the limits of DWI (Dieseling While Influencing). Dave you Rock Brother‼️
😂👍
Best reply award goes to... VERYMADMIKE!!! 😆
@@DavesAutoCenterCentervilletruck frames aren't straight. They don't stay straight, and many don't come straight from the factory. They handle like garbage. They need diagonal "spokes", just like a bicycle, except on the truck frame. Forming an "x". One inch bolt, near the rear cross members, should be fine. Build a mounting plate or backing plate, or hanger for it, and thread it through...... Then tune it just like you tune a bicycle wheel. You're welcome. I will call your shop to confirm on Tuesday. October 22. When you make a video about it, just say Sasquatch told you about it.
Also, unibody vehicleS can have similar "x" installed and formed into the design of the floor, with bolts that can be tensioned to straighten out the frames....... They aren't perfect from the factory, and don't stay perfect. When you're on ice, the car MUST be straight.
This should have happened 140 years ago with the invention of cars. It would be the first "safety" feature of a car. For some reason they are obscenely expensive, and they aren't even tuned for alignment and handling. It's obscene. Adjustable rear subframes don't counT, because at high speed, on ice, they weathercock - from different air drag across the warped body.
I feel like my 7.3 leaker would blow the competition away 💨
Got a 12v Cummins that’d give u a run for your money
I had a 99 f550 4dr 6spd. Started blowby and I sold it😂 only had 150,000 mi
Blow by the competition lol
I have worked in the engine testing world for 20+ years and JTec flow meters have been used for blow by measurements in many applications. Super simple reliable product with excellent support if ever needed. Ziptie that meter under the hood and run the cable in the ca, check it out on a drive.
New Engine suck nowadays
Diagnostics are just as important whether you client is a truck or a person. The more data you have the better you know what if anything is wrong. Great Videos Thank You 🙏
This is gold! Also on 6.7 power strokes and LB7 duramax engines, a poorly seated injector can cause excessive blow by.
The good old 6.4 powerstroke. Ticking time bomb.
I saw it and said I know what this thing is about to do! And it was even worse than expected. That good ole 6.4 never lets you down from being much worse than expected
You know an engine is bad when some shops won’t even work on them. I had one for a while and chose to let it sit and rot into the ground after it wouldn’t fire after shutting it off one day. I run 2 pre emissions NPR’s for my landscape company and couldn’t be happier. Looking for a nice LBZ but haven’t found the right one yet.
@@ohtwo23so you shut it off and it would turn back on? If it was running good before you shut it off it would have been a simple fix
Gohdamn 2015 with close to 400K … and still runs good 👏🏾 bravo to that owner
should go talk to the camper pullers before i quit in 21 i knew several with old dodges with over 1 million miles i parked 2 after 600k the 6.7 was running so good they couldnt diagnose why the fuel mileage was dropping. I had enough to do one of the 2 things that needed done but since it was still running so good they said ya have to change both the pump and injectors. changing one would kill the other and probably take out the engine.
Thank you, Dave. I learn something new every time I watch your channel. I am a novice when it comes to cars. My trade is hvac/r. Your channel is one of three I look forward to watching daily. Thank your son for starting this channel.
That is awesome!
Hey Dave, y'all basically did a FEV1 test in the beginning of the video. FEV1 stands for Forced expired volume in 1 second. It's a great test to assess lung function in COPD and other obstructive vs. restrictive lung diseases.
Well just in time for small airway disease? Not much in the way of Obstruction. lol
A way we test blowby in tier4 emissions equipped engines is by disconnecting and blocking off the ccv system and installing the blowby gauge inline. This gives a more precise reading of blowby and a better indication of ring/cylinder wear if your looking to gauge it. I love the oil cap technique though. The reason those later model engines blowby went down may have been due to the ccv system opening up more and pulling that through
Great tool!
If the cap's a dancin' it's no good.
You and Gale Banks would be a hell of a combo
Guess I’m not the only one to think this.
My career as an engineer continually taught me proof is always in the data. Collecting data then quantifying it to identify trends, making comparisons, and supporting arguments with statistical evidence is CONFIRMATION . . . . DONCHA LUVIT!
Yep, that's what us scientists do 😊
That's a pretty cool test. I would like to see some scientific analysis to see if these numbers can come down. Maybe different oil or even rings
Just tried Daves way to on my 2005 Ford. No issues. Learning so much.
do a test on one of your new builds and compare
Hello Dave: This pressure transducer with the digital readout does a great job 👏 👍. TMP from N.J.
Blow-by was always a parameter that we measured at Cummins Illinois/Cummins Northern Illinois as part of the dyno test. As I recall, It's been about 25 years or so, 3" H2O (might have been mercury) was the no go spec.
Well Dave, your new blowby toy tells us that the rings have failed, this is very vital info, as ANY missfire will cause oil contamination by fuel and carbon particles, with only a few thou clearance on journals etc, it becomes obvious why engines sieze or run their bearings. You and Lake Speed are highlighting the real seriousness of oils, but also the point that lots of factors also play into this situation.
not fair!! the cummins and the 6.4 powerstroke came with blowby from the factory! lol
I got 08 with 105 k and blowby is almost non existent. Maintenance, maintenance and also keeping the regens down.
That Gorilla Ladder is a Godsend. A must-have for working on trucks or anything else
This is amazing testing, bravo
Thank you! Cheers!
My 6.4l is still good at 180k . I checked it years ago when i bought it. Was a military truck.
Yah, military truck that is not regenerating. Problems are almost non existent on 6.4's. without emissions.
Thanks for all your knowledge
“Maysure” 😂😂 always cracks me up lol
thought the same thing
Hey Dave. Appreciate the info...Also one thing to consider on the used car inspection, at least in our area, dealers dont wanna fix or take money off for things that are wrong with vehicle....
Yes, that can be true. At least you as the buyer would know what you are in for as far as probable repairs 👍
Thanks for everything Dave! On those trucks with excessive blowby I would be curious to see the flowmeter before and after an oil change!
I would love to see the readings on a truck with a CCV that has been ran to the exhust pipe with venturi.
Exactly.
Excellent video ! Thank you for sharing this is so useful
When I have the money, I will totally bring my 2001 toyota 4runner to you for a full engine break down, repair, clean, rewire, and some interior fixes. You'll have fun with mine. Also it would be interesting to see you convert a 4runner to diesel.
Great Data collection!👍🏻🇺🇲
I knew the 6.4 Powerstroke would take a commanding lead lol
These are days of Roses for this shop. Monster repair invoices create yuge cash flo to keep well oiled shop humming.
Love your channel.
I like to see you be methododical. That will give you the best information.
6.7 power stroke best engine on the market!!
The 6.4 😂
I laughed so hard. Of course the 6.4 is bad 🤣
6.4 just doing 6.4 things. Cracked pistons 😂
Those 6.4 were made like that from the factory lol 😆
I saw it and said here we go!
You could use a pressure pulse sensor on the dipstick tube into a scope
Good stuff!
Awesome tool! Curious how it can be utilized to test gapless ring builds and the longevity of the rings sealing abilities. More data the better!
Are you measuring in cubic Feet per min or hour??
The EPA Act should be amended so that any politician that introduces more crippling standards on diesels shall be subjected to this blowhard test.
More info to come !
Great video
Maybe I missed it, but where's my control? I'd be curious to see the numbers on a late-model low-mile truck.
High end monometer
great video!
Breathalyzer for your engine.😂 My Grandfather used to homebuild mercury filled manometers back in the 60's to diagnose blow buy. He was a mad scientist for his time.
Tyson, you know your boss thinks a lot of you when he's willing to trade spit with you!
Id love to see this on a "speedofair" piston motor.. make it happen dave thanks in advance!!
I'd be interested to see what it is on one of your brand new engines.
I told you how to fix and prevent this but you are not interested. There are none so blind as those who will not see. Good luck with your senseless rebuilds.
This is interesting, I would like to know if there are standards with each model, and how they relate to rise of RPM.
Dig this!
Started as a breathalyzer 😂
😂😂😂
My truck has watched me do the blow test time for it to do it 😂
That's an awesome little gadget I've been looking to buy a Duramax but so many of them in my price range they have 260,000 to 300 and some thousand miles on them love them guys say no blow by but I'd hate to end up buying one and have problems because they're so expensive 2 rebuild blossom video buddy keep them coming
We have one at work with the Allison transmission, and I can't recall it ever needing anything at all with those miles. The only thing is 5k mile oil changes, and a battery replacement all its life.
Well for one, “duramax” could mean a complete pile of shit, or pretty decent. Know your different models and the issues with each year, not just the fact that it’s a duramax. It’s the same for powerstrokes or even Cummins.
Interesting test! Would you say that excessive blow by is a sure symptom of excessive ring wear? And if so, would that be primarily caused by a history of missed service intervals and/or the wrong oil chemistry?
I feel like this video is THE video I've been waiting for for a long *%$ time now, I don't know or remember if there is a similar video to this or not. What I do know is that I wondered about the true seriousness, for lack of a better word, about the blow by on my diesel truck in a more scientific approach with numbers to back up weather or not I should look into getting a rebuild done or wait.
It’s amazing you got that many trucks with that much blow by and most of all the manufactures don’t care whatsoever to improve the system and make it better where there’s no blow by no drag cars they do it and they take care of it on blow by an over 5000 hp but these trucks heremanufactures incompetency of the motor properly last 300,000 or 500,000 miles
Simple test. Cap bounces=bad cap doesn’t bounce=good
Always love watching your diagnostic stuff but this one showed the differences between known reasonable engines and that poor thing that couldnt warm up,,, wanna see what one of your speed of power engines does, after a break in period
I just blew a head gasket on my car, I never filled up the coolent overflow for about a year, I recall squeezing the main hose and hearing/feeling air but never thought it was a big deal until now I have major blowby and it smokes white. Sucks to suck
Meter needs a max/ min flow reading hold function.
Just a thought, I'd imagine the pcv needs to be blocked off before testing🤔
Sweet
You should call this the “15,000 mile oil change interval” test.
I think we all can tell which truck owners didn’t fall for that “3-5k oil change “scam”.
so funny, my 2019 powerstroke with 86K miles just started to have blow-by. guess i'll be ordering an engine soon🤦🏽
You need a good security officer??
I'm in!!
Great test. I'm wondering what causes the wear in these newer trucks. Is it possibly EGR? I have a 96 12 valve with 211000 miles and no blow by.
I have a 96 12v to has 502000 miles little to no blowby
Lack of oil changes. But yeah. If the engine has to chew on its own farts. Can’t be good for its longevity 😂
You didnt cut open any oil filters?
You and your blow by freaked me out. I have a 2012 TDI and check the cap, boy was it dancing and everything.
Come to find out the vacuum pump is vented into the valve cover.
Volkswagen route it to the intake.
@@gulfy09 maybe on some. I’m only familiar with my specific vehicle which is a diesel.
So how can the pressure test from the oil fill cap be accurate if the motor has a breather tube/line coming off the valve cover or the crankcase and just dumping the vapor into the atmosphere ??
You are correct
GREAT !
Does the PVC affect the outcome of the blow by?
The 6.4 has blow by when new. Keystone piston rings
All engines have blow by when new
I wonder what the difference is between vents to the atmosphere vs vents to the air filter tube (pre turbo), where a vacuum is created.
Nice!!!!
You can hear a slight miss fire on the 6.4 lol
metal expands when hot
Dave you blew headgasket
2022 with 92,000 and sounds like that!? Who's putting antifreeze in their oil?
The block wall...😅
That was the 6.4 in the background
The 22 with 92k was almost flawless and silent.
@@CarObsessed96 Ahhh.... you're right! Crisis averted.
Hang on . Did I miss something here . . . Measuring from the cap will cause invalid results unless you block the breather pipe as your bringing a 2nd breather and factors such as breather filter restriction and air filter restriction into play .
So either measure at the breather into the intake or at the cap and block the other .
Hmm, i learned something new about my 6.7 Cummins. I should change that on mine, what is the change interval for the crank case filter?
I’d love for you to check my Volkswagen that has almost 400,000 miles!!! 😂😂
What VW?
That first Duramax didn't need a test, it even sounded weak.
The 6.4 got a cracked piston !
Question
What’s the point of a crankcase breather? The blow by is still occurring past the pistons so what is causing the numbers to change? Is it that most is being recirculated back into the intake? So the new breathers just going to plug up and still just as much wear and tear - waste of money to replace or would you recommend?
why wasnt the crank case vent plugged in order to get an accurate reading? Isnt that what cummins procedure is?
So how do you differentiate from blow-by and crank case pressure?
OMG peoples need to learn to take care of their trucks !!!!!!!!!!!!!!!!!!!! i pulled campers for years 04 5.9 cummins have almost 0 blow by cap sat like it was not running had 616k miles, 07 6.7 cummins was deleted when i got it, at 607k miles you would see just a puff of smoke come out the oil cap once every couple minutes... I got a 19 Ram that had a bad EGR from get go dealerships blew me off as i was complaining about low turbo pressure( they said normal brreak in had 14k when the problem started) at 74k miles it finally set the engine light on they charged me to clean the EGR, 2 days later i was broke down with the EGR stck wide open 10 days waiting for part in hotel and 3000 more dollars, after that it had blow by and used 2 quarts of oil every 5000 miles. after 10 more months of arguing truck had 170k on it i said come and get it... To me warrenty should have covered it because problem started at 14k and there is 4 dealerships that have records showing i had a complaint from the 14k to 20k but not one of them had any notes of why i was complaining...
Should you not check the PVC system’s function first? To ensure its ventilation is to spec?
My LB7 has a good bit when it’s hot but could care less runs perfect uses no oil
My LB7 has a good bit when it’s hot but could are less runs perfect uses no oil
Doesn't a clogged filter push any extra through the cap you have on? So replacing the crank breather filter let's more air through the filter and less through the test equipment. Meaning it's not reducing the blow by??
Exactly my thought. I think Dave is missing the boat on this a little bit? And a new crank case filter will do absolutely nothing for improved efficiency and power.
Wonder if any of them have a pcv reroute.
Dave , what’s your input on banks air ram intake kit heater bolt repair ?
No pun intended!
I didn’t see you blocking off the normal crank case ventilation systems on these trucks, therefore this testing is pretty irrelevant and inaccurate. Crankcase gases are escaping through ventilation system while you’re reading what escapes by the oil cap, so you are only reading some of the blow by on each truck. Secondly, such as on Cummins engines, you have to account for vacuum systems which exhaust into the crankcase, and will give a false high if your vacuum system has a leak.
When you stop learning your dead. (Henry Ford)
And that’s why they make kits to swap a Cummins into 08 to 2010 fords