Part 2: Major 6.7L Powerstroke issue fixed
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- เผยแพร่เมื่อ 7 พ.ย. 2023
- Part 1 ➡️ Ford 6.7 power stroke oil starvation issues revealed
• Part 1: Ford 6.7 power...
Watch to see the drastic results from the stock oiling issues that these engines have that cause total engine failure early on, and how we fix it. Our kit to resolve this comes out soon
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I’m betting Dave installed a one way check valve that prevents back flow after engine shutdown. If you Add up all those extra seconds saved on engine startups, that ends up being a significantly lower amount of time saved in dry start time and it looked like there was oil instantly flowing (albeit at a lower pressure ) when cranking engine. Nice upgrade Dave! Love your videos.
I agree with you, that’s probably what he did. My question is when changing the oil will that mean the 2 quarts of old oil stay in the motor and not be able to be drained?
@@jacobmartin1951 Great question! Most probably that is so. Partial solution is to add 1-2 qts of fresh oil, run motor for 30 seconds and re-drain oil, and re-fill with normal amount. You will replace much of the dirty oil with fresh oil, and the new filter can pull the rest of the contaminants out during normal operation. Alternatively it is possible to install a fine particle bypass filter, but that is better suited ($$$) to heavy truck applications.
If I had one of these new high output diesel engines that are in these new trucks I would most definitely add a bypass filter. I also like the idea of swapping to the bigger and better CAT filter.
Same thought, right at the pickup after sift... let us watch😊
Just think a newer diesel starts after 1 second of cranking so you have 7 seconds at 1000 rpm possibly high idle 1250 1400 for 6 seconds and boom main bearings goes by by
In industrial applications ( Im a power plant operator), a check valve on the suction side of a pump to prevent loss of prime is called a foot valve. Nice video and nice work!
Every water well has one.
It's incredible that all combustion engines don't have this. It seems like such a basic thing that could do a lot of good, with the only real risk being that some fail and do not hold in the pressure, which would be the current state of things!
I called this a feature of planned obsolescence, but more like planned failure right after warranty period expires. Why sell an engine or vehicle once when you can plan a failure and get repeat customers?@@brahtrumpwonbigly7309
im a thermal powerplant op and we call check valves, check valves lol... only a few pumps here with net positive suction head though
@@brahtrumpwonbigly7309 if the engine was designed a bit smarter surface tension of the oil alone would maintain oil pump priming
I am a retired Airborne State Trooper, and on our piston engines we installed a pre-oiler. It was electric 12v and it just felt good to start an engine that, at start had oil pressure, especially in winter if it had been outside. We always made TBO.
I enjoy the technical aspect and clean enviro. of your vids..
I have an old 5.9 Cummins with 240,000 miles and she's just getting started.
There is preoiler that uses oil pressure when motor ran last. Before shutting off,you close valve on preoiler. You open it before starting motor.
That the post I was coming to make. Glad I read ahead! :)
@Old Cowboy450 , Very interesting... What type of planes did you fly out of ? What type of engines did they have? Do you know the # of the STC of those pre-oiler kits? Reading some of the replies that other subscribers have contributed here, gave me several ideas about various ways of Pre-oiling engines before start-up... I was wondering if anybody has installed an accumulator, with an electrically controlled valve to open it to the Lube System.... As the ignition switch is activated, that electrical circuit could send a signal to an electrically controlled valve, on a hydraulic accunulator , to pressurize the engine oil directly to a point in the engine lube system.... 11:57
@@michaelmartinez1345 If you are into planes I had '76 Cessna T-210 with a Continental TSIO-520-H. I never had the preoiler but I know it was available for my model. I did have electric (wall plug) oil pan and cylinder heaters so on cold days I did at least thin the oil! :)
On that note I love Continentals because the cam is under the crank so they got extended drippage and did not dry out like Lycoming cams above the crank do.
I could talk a LOT more about oil on 500+ cubic inch air cooled airplane engines but I will stop there in case no one gives a shit! LOL! BUT I will gladly ramble on more if you do!
@@robjohnson8522 Awesome !!!! I like your appreciation of opposed engines that have camshafts below the crankshafts, like the air-cooled VW's & the Air cooled BMW boxer twin M/C engines..., When it comes to planes, yes, I can ramble with the best of them... Most of my aviation experience (20+ years) is with maintenance and repairs of large turbine airliners and cargo planes... I have about 3 years of experience working on CH-46 Helo's (U.S.M.C.)...And about 1-year of experience maintaining & repairing part 91 and part 123 single & twin engine recip. G.A aircraft of various types at an FBO... (Pre-9/11/01) ... That idea of equipping the STC of the engine oil pan & jug warmers 😮😃 to the tsio 520 TCM is a good one, to get her fluidz moving rapidly 😮.... Nothing like warmed jugs & fluidz to get the chilled homesick angel to respond when she's needed... The V-16 Cats that I used to work on in those model # 793 mining trucks, were usually warm when they were tasked to do transfers of Mining materials as that mine and several other mines, are 24/7 operations.... However, they always pre-lubed those engines before they were started with an electric oil pump that was plumbed into the engine's main lube galleys.... They have 4-ea. turbo-chargers on each of those 3,516 cid 2,400 H.P. diesel engines...The 793 B's we had fully loaded weighed close to 500 tons..The 3,516 engines were also used on the Cat model #993 large wheel loaders, which helped the operation by loading the haul trucks in spots that the 3.8 million pound P&H rope shovels they have , could not easily get to....Doing things that can extend the life of our personal vehicles, could save us thousands of $ ... When the companies do these types of things to their equipment & vehicles, it could save them Millions of $....
So , from doing these types of things, we can give ourselves a better chance to survive the worst financial situations that many people can't even begin to imagine.. This is being prepared....
What impressive about Dave is he really takes pride in his work and not many people really do now days. He has the patience and intelligence to diagnose and solve problems. And he has the shop and tools to do the job right.
Got to love an engine builder who goes the extra mile.
Send it
We use check valves in the aerospace industry all the time just because of this. Very Smart Dave
Being 70 years old I remember in 1971 Chrysler came out and advised owners NOT to use LEE Oil Filters. Chrysler said that the LEE's allow engine Oil to drain back into the Oil Pan and thus every time you started your engine the Oil pump had to refill the Filter being akin to a Oil Change or First start after Oil service. Now here we are 2024 . Some things change and some do not. Great content. Bless you and yours.
They wouldn't WANT you designing a motor for them Dave. That would be making something rock solid if u did. Excellent video!
Thanks 👍
Exactly. Ford is an evil engineered-to-fail monster continually bailed out by the government. Speedkarr99 shows how insanely common it is to use plastic parts in engines. It's defrauding consumers as an engineering approach.
Somebody to gave me a sounds up for something that I don't know why I asked about what he thought about the 7.3 turbo diesel that came out in the 73 model Ford trucks
@@eugenesiedl5065Ford Didn't have a 7.3 Diesel in 1973 I remember they had a 6.9 turbo Diesel in the 80s
Maybe he means the 7.3L IDI “Turbo Diesel” from 1993-Early 1994?
Those were basically the same 7.3l IDI motors with upgraded cylinder heads and a ATS aftermarket turbo. We worked on a lot of those back in the 1990s.
You should design a part so we can install it to our existing running 6.7 to prolong the life. I’m sure you will get lots of buyers.. like a modified pickup tube with the check valve in exchange for our stock one.
Thanks for the feedback and the confidence, brother!
excellent videos Dave !
Check valve in the pick up tube. That’s why you don’t lose the prime on your well for your sprinkler system.
So if that’s the fix that oil won’t drain out when you change the oil
I thought the same thing but polymers brake down in oil
@@nayBobbwho cares bout a 1/2 a quart of oil if your turbo, cam, lifters, rockers, and bearings last another 150,000 miles….. just upgrade to an oil pan that holds an extra two quarts.
@@braddycarter9312you missed the entire point of the video. The oil system drains back almost immediately. As shown in the video. Increasing the capacity won't stop or affect drain back. The solution is mentioned above in another reply
@@highpsiguy4085check the comment of the person I tagged to see what they said before trying to explain to me what I already know 😂
This guy is like Scotty Kilmer just not annoying
Scottys the man!!
Scotty Kilmer but he actually has a reasoned understanding of what he's talking about
Kilmer is all click bait now. Not worth the time.
This guy is the version of scotty Kilmer who knows what they heck he's talking about. 😅
No, Dave wouldn’t make a 12min video that tries to convince you pressure fittings are ok to use on your break lines
“Oh the tick is normal after an oil change”
No ford, your “anti drainback” system sucks.
Great work man, the world needs more people like you.
We need to have you on our show!!! Knowledge master Dave
Yes!!
Another 6.7 money pit story seriously glad I ditched mine
@@stevenbrooks1243 ditto and they're way too easy for a bad mechanic to screw up due to how complicated they are, ditched mine for the other 6.7 of the inline variety, hope it holds up. There aren't enough ARods, Bills and Daves to go around...
@@wtbman don't forget Flying Wrenches, Ford Boss, Choate Engineering, In The Shop, Custom Works, Diesel Tech Ron, and a handful I can't remember off hand at the moment.
All awesome channels with loads of information! Shout out to ALL the in the Ford brotherhood!
I'm glad YOU saw this. :)
Thank goodness I listened to Bill Hewitt and used Archoil 9100 in my 410,000 mile 6.7, since it was new. I’ve never had the typewriter tick after any oil changes or any unusual noises. After seeing this and the results of Archoil fuel additive, I truly believe Bill knew what he was talking about and thank you Dave for bringing this to our attention.
Archoil is the BEST fuel additive if ever used. Made a huge difference in my Hino 8.0 diesel
Wow! I wasn’t expecting it to take that long. Great illumination
If I could afford it, I would drive from where I live in NC to his shop to have him fix my engine if it ever needed it!!! This man is an EXTREMELY TALENTED INDIVIDUAL!!!
I used to live in Edmonton AB, I had a snow plowing business and a couple friends had these 6.7 Powerstrokes. We all used to go out during the middle of the night to clean snow. I cant imagine how long 5-40 or ever 0-40 full synthetic would take the prime that engine at -45 or -50 Celsius (nearly -60F) even IF they’re plugged in, that oil is thick.
I don’t think its feasible/practical, but if you could figure out a way to run this test at low temps, and not 75 degrees in a shop… I bet the time to prime that turbo pedestal is 20 seconds.
Up in the nwt alot of people run them but most have pan heater and block heater past -10 also the town i live in takes 5 minutes to get to the other side they get a 1/10th of the mileage ab trucks get
I just came across your channel after being sent it from a friend, and after watching a few videos, it makes me happy that there’s an actual shop out there with guys that know what they’re doing. That is so hard to find nowadays. You and your crew put 95%+ of other shops and mechanics to shame.
The manufacturer knows that they have a problem. All of them. They know how to make a vehicle live until the warranty expires. That's all they care about.
I was in a service meeting years ago. They said that 85% of people do not return to the dealership after the warranty period.
This is how they get back their lost business. Either you'll be in the service department, or you'll be in the sales department.
You can not 100% eliminate warranty repairs something will fail at some point. Made by humans or machine something will be over looked cause a failure, mismachined, small spot wasn't tempered or hardened right, bearing pressed in .002 to far or .002 shallow list be endless possibilities
@@TEXMECHANIC I have to sort of disagree with you on this one - with good quality control and the proper processes, it can be reduced to near zero, especially if you are talking about failures during the warranty period. Go back and look at how American manufacturers built airplanes during WWII that, at the end of the assembly line, flew off into the war. That wasn't by accident. After the war US manufacturers got lazy and cost-cutting, and QC Guru Deming went over to Japan and taught them how to do it, leading to their quality TVs, cameras, optical equipment, machinery, cars, etc. There is always a battle in companies between the people who want to do it right, and the people who want to do it quick and cheap. That never changes.
@redmondjp no matter how good quality control there still things can not prevent you can not check every component every time production would be drastically long and not fulfill demand.
@@TEXMECHANIC Have you ever worked in manufacturing? Quality starts with the raw materials and works all the way down the line, so to speak. One of my employers machined aluminum parts for a major airplane manufacturer. They have a paper trail for each lot of aluminum that they receive. Each step in the process has a quality check so bad parts aren't sent further along. I started working for a major GM parts supplier in the 1980s and have worked in heavy-truck, off-road, and aerial lift vehicle manufacturing as well as parts suppliers to those same companies. There are some rare failures but a properly-designed manufacturing process integrated with QC at every step goes a long way to all but eliminating most failures.
all,, warranty,s.. are worth sht.. paper.. fact.. even oil changes dont happen.. money for nothing.. ill buy a 40 yr old car, & fix it, its cheaper, & lasts longer..
Sir much respect this world needs more men like you
Good job Dave. The only way to prevent the oil from going back is probably what Dave did and installed a check valve or some type of one way gate valve. Hats off to Dave.
He need his own show.💯💯👍
He has one...Dave announced that the Discovery Channel had just picked them up!
When Dave or Cass from Choate engineering make videos, I'm tuned all the way in. Both of yall make some of the most fascinating videos of them all. I could listen and watch these all day and never tire of learning ans storing the immense information.
Thanks Dave, this is quality TH-cam right here. Thanks for sharing and takikg the time. We ALL seriously appreciate it
Gale Banks does some pretty similar style
Sure, appreciate the compliment! It's viewers like you that make it all worthwhile
absolutely, well said^^^^^
@@DavesAutoCenterCentervilleHey, where's part 3 lol? Cmon man 😁
@DavesAutoCenterCenterville just wanted to thank you for these video they help me out a lot and congrats on the Discovery I look forward to seeing your series
I agree there is alot of space in the oil system to fill and get pressure. I've worked and ford dealer pretty much the hole time the 6.7 has been out. I've only repaired like 4 engines in that time. And they where damaged from a lack of oil in the sump. 17-19 got really bad crank case breathers that clogged and cause the engine to consume oil and company trucks don't ever get the oil checked. I think this is why you see so many 6.7 with smoked bearing.
Good point that CCV filter Brewster should be changed regularly but never does.
@@Bacongrease00 ford came out with an updated part that doesn't have the paper filter in it.
That and really hard core tuning power stroke help did a video on main bearing failures. He saw from the aftermarket side of things, the tolerances are really tight, and the main bearing gets hammered terribly by way too much ignition timing
Dave! You The MAN! You are 1 in a MILLION!😊
Should be like the glow plugs before you can start here should be a button before. You can start the truck that circulates the oil with an external pump. So the check valve isn't keeping that oil up there during oil change.
Just shows that in house r and d makes a difference. I've watched several of your videos and you guys know what's going on. Awesome.
Awesome! Thank you!
Great content as usual Dave. I run a repair shop and think along the same lines- always trying to figure out why things fail prematurely and try to improve the end product and make the repair last longer than the factory did. I really like what you did with the oil system.
There were a couple comments I saw in regard to the system being open on top (no turbo installed) and while it is true that having the turbo installed will help hold the oil up, gravity is always pulling down and all bearings have tolerances allowing air to enter the oil system starting on top and filling the void left by the oil going back to the oil pan. And as an engine ages those tolerances increase which allows air to enter behind the oil moving down even faster. Then add in the temperature factor and when you shut down an engine hot, that oil will move back to the oil pan that much faster due the lower oil viscosity.
There are also a few questions and comments in regard to the oil stuck in the engine when doing an oil change with the check valve (I think the technical term is foot valve) installed. I think there is less oil left in the engine than one would think. I always remove the oil filter first and then drain the oil- most of the oil above the filter will drain out. In the grand scheme of things, that quart that would be left is inconsequential if good maintenance is performed/kept up with. Think of the 7.3L powerstroke- there is about a quart of oil up top (in the HPOP reservoir) that most people don’t drain when doing service and it is really inconsequential if you do proper maintenance. I would go as far as say it would be better to leave the oil there for quicker startup lubrication after service.
I think where this will really make a difference is as the engine wears (I don’t think it will wear as fast as if there was no check valve due to quicker oiling on start up) and not just the engine but the turbo as well, this will really help keep the oil where it belongs. Not to mention, if you don’t drive every day, it will help with or eliminate dry starts from day one.
Thanks for all the quality content, keep it up!
It all makes sense now. My 6.7 powerstroke blew up right after the warranty expired at 89k miles costing me $19,600 at Gillette diesel in bluffdale.
Just adding a check valve (foot valve in this case) does come with several drawbacks. There are losses in flow due to the restriction of the foot valve and it will work the pump harder while pumping less volume. It also prevents a complete oil change. I'm sure the "One simple trick that engineers hate" has been tried and abandoned by the auto industry for a very good reason.
Check value isn't necessary. This video is fake. 100% fake. Engine was not maintained correctly. This engine has 2 oil specs
@@robsackettXTRprovide proof or shut the fuck up😊
All check valves are not created equal. If you select/modify the right check valve, the slight reduction in oil flow will be negligible. The oil flow on a normally well maintained engine will be in excess of the minimum required flow rate. Compare how high the oil stream going into the plastic cup before the fix versus post fix. Not a significant difference. The extended life due to reduced oil starvation on cold startup far exceeds the little reduction in oil flow due to losses in the check valve (restriction and turbulence). The video illustrates a very good engineering design tradeoff for drastically increased engine life.
Better add some kind of modification note on the engine or I forsee all those engines being overfilled after an oil change!
Years ago I worked for Fram in the engineering model shop.
There was an ever present notion that all parts should be least-cost.
A check valve in the pickup tube may not suit your sympathies but it's better than the original design and a kick in the ass with a frozen boot
Great to see a fix for something over looked by a big company. Again... Great job!
In the early 1950’s John Deere had a fuel shut off that was turned on by oil pressure
If I recall the early TBI equipped GM pickups wouldn't turn on the fuel pump until the engine built up a certain amount of oil pressure. Or that's what I've read anyway.
When you said, "this is what engine builder's do". I about screamed! Damn right! Without exactly knowing, I figure you designed a check valve to keep the oil from draining back into the pan. And perhaps a pre-oiler that comes on when the ignition is turned to the on position. That being said. It's people like you: engine builder's, hot rodders, shade tree mechanics, farmers, etc that see an issue and figure out what to do about it. It's amazing!!!! BRAVO!!!
That means a lot! Thanks for watching and giving your feedback
@tomcampbell6363: Yes, I was also thinking this guy must have been a farmer.
I’ve been a part of 6.0/6.4/6.7 diesel forums for a long time. Never really saw a rash of these failures unless there was an underlying cause such as lack of maintenance or user error. The 2011-2013 motors did have some turbo and valve issues. Either way this is great stuff. My 6.0 takes about 3-4 seconds to move the dummy gauge but after 250K tear down it looked good.
Thanks for the feedback and for watching!
I've been a ford tech for about 20yrs, and I've seen a LOT of 6.7 main bearings failures (have one at my work as I type this waiting on an engine). And it's been a mix of trucks with stellar and questionable maintenance keeping. So it's definitely more of an engineering fault than a maintenance fault.
I have nothing but respect for your entire troubleshooting and solution finding process. Will be great to see how it works out for the longevity of the motor. 😊
For real because ford needs all the help it can get.
Dave. Over the months, I’ve watched this video again and again. You and your son and your team did great work here and it’s inspiring. Making things better is what I live for. I love this fix you invented. I tell this story often and I’m in finance.
That explains why oil filter is 3/4 empty when I am ready to change oil two days later
Or half full
@@44carbine91A matter of perspective
That literally never happens on the 6.7 powerstroke. Not possible.
Those filters are never empty come oil change time.
@@jaredbraun8547 , I have proof recorded
Since this series of videos I have been screaming,,,,,,preaching to our quicklane teams,,,,,,,,PRIME YOUR DAMN OIL FILTER !!!!!!! thank you Dave. Now I got proof to show em.
I sure am learning a lot from you. Thank you for making these videos!
Glad to hear it!
Over 100 of these engines in our fleet. Worked hard every day. ZERO base engine failures.
We have 1000 of these engines with over 300,000 hours each . Never a issue 😂
@@mr.anderson9938 whatever dude. It’s a fact
Yes because of proper maintenance. The engine is this video was not maintained. This video is completely fake. 100% fake
@@robsackettXTRWhy is it fake?
All modern engines start and run almost Immediately. This video shows 8 second for oil to get to the turbo. The engine is cranking very slowly and so is the oil pump. The test is completely fake and not real world at all. If all engines started this way, ALL engines would have bearing failures. This engine was not maintained properly, this engine has 2 oil specs.
Dave, you’re an absolute genius.
You are a true gearhead Dave!!! Love watching what you do. Not only are you figuring out points of failure, but you provide awesome solutions to make these power plants produce more power, and better reliability. And that is what it's about, if you truly have a passion for what you do!!! Thank you for sharing, always a treat watching and learning from someone with knowledge and passion 😊
Nice to see folks that have pride in their work and look for solutions. I think the big automakers don’t want to fix some things.
I worked in emergency power field, some large engines we used, 50 and 60 liter engines, had prelube pumps on them that could be programmed to run every thirty minutes until
the oil system was pressurized.
This was to prevent this same problem when the generator was started in an emergency start situation for a hospital or other critical facility. They also had block heaters on them to keep the cooling system 90-120 degrees.
These engines held 48-110 gallons of oil depending on the oil sump configuration and other items
Awesome video! Makes me think of a set up in one of my vehicles... I have a 1968 dodge charger with a 440 under the hood. I have a 3 quart pre-oiler by moroso (23900) and when you hit the key, it dumps the oil into the top of the motor, pre-oiling it.
shouldnt need it,,seeing it uses mineral oil,, not synthetic crap.. ie- water..0w 5, water..
Fill out the oil before install the oil filter and I think Oooo moment you are install a NRV (non returning valve) in line. And I love your machine shop equipment.
That is scary to think about. Dave you are the best.
Keep up the good work,it's hard to find good honest people
Priming pump would solve this. Standard on heavy equipment. mounted externally so no teardown and you have the stock oiling even if it fails.
I like what you do. Your not a motor builder, your a magician. I like your serious and your determination to fo a god job. Thks for what you do. (Excuse my english, i'm french 😂)
Thank you very much!
I love it Dave I love watching your videos reminds me of the good old days when I used to get yelled at for take a little bit longer on someone's vehicle to make it right cuz the factories make a lot of mistakes. I used to race my own cars I know in a motor needs oil immediately
You’re a smart man. Just found your channel about a week ago and I’m hooked 😊
I would like to see a more real world test. My 6.7 doesn't crank for two seconds and is at 600ish idle rpm. I also wonder if the added drainback restriction of the turbo being installed would change the result. I like the idea in concept, just would like to see a more real world test.
We hear ya! Thanks for the feedback
Take a straw and place it in a glass full of water, then put your finger over then end and lift it out of the glass, the straw will keep the liquid inside. But when you remove your finger from the top of the straw, the water will drain. The same can be said about not having the turbo on top of the engine, you have removed it from the equation, like the finger on the straw, allowing air to enter the top of the engine and the oil will drain back into the pan unless you have put some sort of check valve to keep the flow stopped. Bad thing about check valves, sometimes they stick open or stick shut. Sticking shut will starve the bearings of any oil. Bad consequences.
And that's this video is completely fake. 100% fake. You are 100% correct dwd3416
The motor is cranking slowly for a couple of seconds. Maybe like 50 rpm, then it spins .
I believe Mr Dave is showing exactly the results as they are although he does not commit to alot of control in his demonstration, The gentleman with the straw analogy certainly has a consideration to illustrate, just because one might be ignorant does not mean he is deceitful.
Yep cutting out siphon tube and putting the check valve in there sure seems to help.
Way back in the day(1972) ,the workshop manual on our Lancia said to crank the engine over(plugs out of course) for a few seconds 11:57 after you drain the sump.Now I realize they must have had a similar foot valve arrangement Dave.That way the oil galleries get emptied for the fresh oil to replenish.Never could bring myself to do it!
Never had a bearing problem in over 100k miles either.Great video's btw😊
Dave! I am now addicted to your videos! Thank you for taking the time to do these videos
we run 15w40 in the 6.7 and service many - very rare to see bearing failure with that oil
This engine has two oil spec.
This engine in the video, those specs were not followed, that's why it failed
This video is completely fake. 100% fake
I’d be very curious to see how long is takes for the older long lasting engines like the 7.3 and 5.9s to get oil to the top like this
7.3 holds a lotta oil in the oil cooler but it wont drain back into the pan
I have 2 7.3’s and they run super good ! Slow but they will get there !
For sure mine sits a lot 1 or 2 then I pull my boat but I don’t fish everyday it’s an 03 last of 7.3 s 214 k on it so far she’s been a great truck only issue was a hot start I got a cpi from
Auto parts store instead of going to ford after a pain in the ass trouble shooting four part no good went to ford and and replaced the new ones are 3/4 on the rocker cover r\s than the original 5/8 and new thermostat also on the 6.7 is check the radiator cap for 15$ it’s not worth an engine when it’s getting too hot That engine needs preasure
older engines didnt use synthetic garbage oil..
@@harrywalker968 do explain.
So I'm guessing you fitted a none return valve, wonder if you could design and make it fit to the oil filter housing or oil cooler housing. Would reduce installation time.
Great fix Dave, nice work 👍
Check/foot valve good simple solution for sure. The machines I repair have pre-lube pumps, that run prior to crank phase of startup, combined with oil pressure switch that must be satisfied before cranking begins. I thought that might have been your idea just on smaller scale. Thanks for the videos, I learn from each one, which is so refreshing for me.
I just love your videos they are so educational and well explained in a very not so boring way. I just got into the mechanics and motors, but I could see how this would be a must watch channel for motor heads!
My 5.9 24v cummins takes about 4-5 seconds to build pressure. Still runs like new after 23 years of heavy use.
Cummins bearings are absolutely huge compared to many other diesel engines in its class. The rod bearings alone are just gigantic. I have never seen a properly maintained Cummins with even a hint of bearing wear that concerned me, and I've worked in 500,000 mile engines several times.
Awesome video! Can you do a test with the 6.7 having the oil filter completely dry and see how long it takes to get oil pressure?
Excellent work. A definite fix so long as oil change intervals are maintained due to the two quarts of dirty oil left in the galleys after an oil change.
Here’s the factory fix.
Computer controlled primer pump that works in conjunction with a wait to start light that disables cranking until a set oil pressure is achieved. Then cranking enabled with pump disabled when a pre determined rpm signal is detected by the engine ECM.
I like your fix Dave since I could grow hair waiting for the manufacturer to act.
I just started watching your videos. I know I am really going to enjoy them and learn from a PRO!!!!
I presume that you're installing some sort of check valve in the oiling system to prevent the draining. What I want to know is , just exactly how you did it and where you did it , and are you going to make this available to the public at a reasonable price . I believe you've accomplished what you set out to do . Way to go , congrats on a job well done. ( I am a retired technician w/ 40 plus yrs experience. This is the sort of thing I yearn to learn.😮
One of the issues I see is how far the motor would have to be torn down to install this check valve , I can't see anyone tearing down a perfectly good running motor to install this , maybe if they were doing a rebuild or something where the motor was being disassembled for some other reason
@wjamesm1001 I'd be willing to bet its on or close to the oil pickup in the sump.
Great presentation Dave! I thought oil filters have drain-back valves to keep oil in the lubrication system?
Dave is the best mechanic I have ever seen! The dedication to excellence Dave demonstrates is what the whole industry should take note of
Such a good channel to learn about engines in such detail.
Glad you like them!
This is awesome mate keep.up the good work 😎👍
Thanks for the visit
Before you send the motor out check to see how much oil is now in your coolant passages because the other hole next to the oil hole is the coolant drain hole for the turbo and I see it’s not taped off so all that oil coming out hitting the cup is then going straight into that coolant hole just noticed it so I figured I’d say something thanks for your videos
🤯🤠
Are you sure it's not the turbo oil drain?
@@jameseastwood4984the turbo oil drain is the big open cavity not the little hole
This mesmerized my small mind, my small soul delights in your channel the accullation of knowledge is stunning
Wow, thank you!
And I think I have a small mind as well. I just focus it all on creating something in the industry. Bet you do the same in your own sphere influence. God bless.
One way valve in the pick up pipe im guessing to stop it flowing back down when the engine is turn off to keep the pipes full
Great videos 👍👍 we've lost a few 6.7 engines at the shop due to spun bearings that design is terrible. Great job with all your details 👍
Mad respect on the check valve Dave!
You figured it about two quarts of oil stays in the upper system so now when the oil is changed that additional two quarts is just going to stay in there so would you lower the oil change interval? Or just let her go?
You are awesome dave ! I'm the service Manager at the Chevrolet dealership in reno nv, but I've always been a ford truck guy! But i tell my lube technicians to fill the oil filter on all our vehicles!
Thank you for this video, you do a nice job explaining things! That 6.7 will last a lot longer now. I’d be interested in seeing more videos of you testing oil flow on other various engines in the future.
Great series! As a 6.7 powerstroke fan and owner I really enjoyed watching this. I’m always looking for ways to fix the kinks in this motor like CCV issues or cp4 issues and this was one I’ve never heard of. The R&D that you guys do is spot on and reminds me of the legend Gale Banks. I would love to hear what the fix is. Im assuming some kind of check valve but is it something that can be done without pulling the motor? Keep up the amazing work!
You know why you haven't heard of this before? Because the video is 100% fake. This engine doesn't take 8 seconds to crank over. 100% FAKE NEWS.
Must be a 1 way check valve I’m assuming, I do enjoy watching these videos, you can tell this guy loves what he does.
I do!
Is draining the oil any different now that you’ve changed the setup
This guy is just so smart. He should be working for the big three. He can fix all of the problems they have.
Agreed, he’s solve all the major problems with the duramax. Powerstroke and Cummins in a week. He’s already figured out a lot of them. But They’d likely lose a ton of money on out of warranty repairs if they had a guy like Dave working for them. But they’d also save alot of money on warranty work. But they probably make more on out of warranty work than they lose on warranty work.
If he did they'd fire him for trying to solve problems because it costs money.
Wish your shop was closer. Love your work here from Wisconsin.
What about a check valve somewhere in the system so it can’t fully drain. Will need a bypass when changing the oil?
Interesting Testing. I also think the issue we are fighting with the modern diesel engines is that the engines start very quickly compared to older diesels. Your not getting the slow Starter driven crankshaft rotations to lube the engine before it starts. Do most engine manufacturers have some sort of check valve in the sump or oil filter to prevent drain back? Thanks for the Videos and Thanks for sharing your knowledge.
old engines didnt use synthetic oil,,which is garbage.. go blame gretta bloombum,, epa,, greenies, for the crap we buy.. &, an ev that self ignites, you cant put out,, so saving the planet, is crap.. they cost more to produce than a normal car, they dont last as long, its all bs smoke & mirrors.. nothing, thats green energy, is re cycleable.. funny,,eh..
I was thinking after watching these shows. If you had a check valve ball that prevented the oil from draining back down. The oil pressure would recover instantly when the pump was charged. Good work Dave. What ever works.
5 to 6 motor re builds a month!!!! Damn, it took my mechanic 3 months to re build my 4.6......and it smokes....great show.
Great video! Although I would have a concern with the check valve restriction… we have a very high quality oil designed by Bob and Harry Conklin that has a polar molecule which makes the oil stick to everything, never drains completely dry. The first 10 seconds of the start up process is where you get most of your wear
No it doesn't work
Backflow valve it’s that simple. What happens when low detergent oil is used and valve gets stuck? More engine work for you, job security.
Thats right and also putting a lot of faith to customer to service regularly to maintain everything working properly.
Even if 1000s fail under warranty they still come out ahead. The ones you are seeing probably have quite a few miles or months so warranty is over so they don’t go to the dealer for a new motor. You and Ford both exist to make a profit but you go about it differently. $50 per motor adds up to really big money, assuming they can do it for $50 it’s probably more. Ford has done the math on how long they need to last.
There’s plenty of ford diesel engines with over 400k miles and without repairs. Key words quality maintenance
Do you not know how a check valve works? Let's say it did "fail" then the oil flow is right back to where it was from factory, big whoop. What he's done is a great idea
@@nathansparks648yep. And even if it does fail it will at least restrict the flow
Sir you’re ability to create a fix for the issue is awesome I’m sure it’s to simple for ford engineers to agree on it🤦♂️
Hey Dave thank you for part two
I love your way of thinking and engineering aaaand improving motors, so the customer has a longer living motor.
I'm a car mechanic and I hate telling my customers, that the manufacturer engineered such crapy things because they want the motors to die after warranty.
They always ask, why they do this but it's unfortunately their intention to make more money in such a shameful way. I kinda lost the faith of good engineering in the automotive industry, but your work is such a blessing to every customer. I appreciate your work and all the affort you put in your repairs and rebuilds. Hope to see more interesting and enriching videos😊🎉
We appreciate the high compliment. We will try to live up to that. Thanks for watching.
The P-51 mustang with Merlin engine has a pre-oiler pump that runs for a few minutes prior to start. Its procedural, but it helped the engines last.
Great video. I’m assuming that the oil doesn’t drain back, so when you change the oil you don’t quite get all of it out. Not a big deal if it saves the bearings in the motor.
This was my question
Love your passion. Very good example of oil issue.
You're definitely Come off as one of the smartest mechanics on youtube Love your thought process
Wow, thanks!
Dave I’m a retired GM tech just retired man that that is great. I thought I was good but you’re the best I don’t know what the issue is with the Duramax but I will tell you they are a pure piece of junk constant crankshaft, breaking camshaft breaking dropping valves I have never in my life figured out why GM continues to use this engine, but kudos to you brother. Keep on keeping on.
Gm needs to use Cummings imo.
Duramax is a solid engine Idk what your talking about. Have had 2 go over 300k and one to almost 500k. Still running the lbz with 315k on it. Sold the lb7 with 450k on it and had no blow by. Problem is people go by the computer on the truck and change the oil every 10-12k miles instead of 5-6k. The other reason for failures is people tuning them to crazy power levels and running them like drag cars. Cummins is a good motor but theyre not bullet proof, they have major problems with turbo sooting up and head bolts stretching. Take care of things and they last its amazing.
@@454budman you would be correct on the maintenance part but as a GM diesel tech I have never seen a Duramax run 1,000,000 miles. The motor always goes before then but the 5.9 Cummins the 6.7 Cummins the 7.3 power stroke I see have done with ease, but the people regular maintain those vehicles to do that
@@leewalker3514 ill take a motor i have to rebuild every million miles over a truck that needs 4 trannies and 10 front ends in that time frame. Ive seen a couple go the distance theres no doubt cummins is a solid built motor tho. The 7.3 i had was a pos
@@454budman again it’s maintenance. My brother had a second GEN 5.9 Cummins the transmission run 808,000 miles before it went out because every 12 months he dropped the fluid and put new filters in it so again it comes to maintenance you would agree.
Are you going to create two jigs for the 6.7 main bearings for the monster engine's. So you can drill the main bores and the bearing shells for dowel pins to reduce any chance of spinning
I fixed one of those once too Dave, took two of us to lift it into the dumpster...but we did it!
When I purchased my 250HD with that motor new from the dealer, the very FIRST THING I did was to install a prelubricator system. So that prior to startup, an electric oil pump would fully pressurize the entire oil system, preventing dry startups. The unit I purchased also had a post lubrication feature, so that upon shutdown, the pump would run (I think for two minutes) to help cool the turbo and its bearings to prevent coking the bearings as it sat there soaking (otherwise non-flowing oil) in the heat.
Where can I buy the prelubercator system?
I only drive Honda's & Toyota's made in japan! I really have never needed a Mechanic because those dont break down.. but im real picky who i let change my oil on my cars & basic Maintenance but i would Definitely let this man/shop do it. But i live in Georgia!.
I've been driving toyota for 12 years with no problems, and I gave up on GM. I will never go back.
Well Toyota trucks have had frame issues for years with recalls on em sooo not exactly reassuring
@@mrmotofyToyota trucks have not had frame issues in many many years. Anything made since 2006 have had no issues and Landcruisers never did. Toyota is the best made out there, is this even a question?
@@hokie9910 yes it was into the 2000's
@@mrmotofy And I believe Toyota replaced the vast majority of the frames at no cost to the owners. Let’s see Ford or GM ever do that for their customers on all of their bad transmissions, engines, electrical gremlins, rusted out rocker panels…
Dave is very smart! First thing when looking for an experienced engine builder is do they know how to get more oil flow, horse power and torque.
What a crazy engine design!! That aluminum oil pan is so complex it's ridiculous, (must cost $1500 plus just for that), such a roundabout route for the oil. Ford (and I love Ford) had a similar problem with the 351 Cleveland. That, sent the oil to the cam, then the rockers, finally the crank, should have been the other way around!! and those lifters are the most unnecessarily complicated thing I've ever seen, as Dave says Bad, Bad, Bad!!
Good job