What happens when you crank your engine? Science behind starting an engine.

[@AdeptApe]

Hope you guys enjoyed this one and Happy Thanksgiving. @AdeptApe on Venmo or [e-mail] on PayPal for donations, thank you so much for supporting the channel! Adept Ape stickers: griddesigns.net/products/adept-ape-decal

[@TroubleActual]

Where have you been??

[@raymondbradley6788]

Josh have a blessed Thanksgiving, brother🙏🏽🙏🏽🙏🏽

[@patricktempleton9297]

Hi Josh. I have a crank no start situation on a 2004 C15 in a Kenworth. The truck was purchased from a guy who was refurbishing it so a few issues were evident as you would expect. Back to the C15. 1). The oil pressure sender plug on the LHside of the engine was plugged into the boost pressure plug?? Would that situation cays issues with the ECU? 2) have checked the ECU 70 pin plug for power/earth and found the following pins 28,29,52,53,70 all have 13.4 volts Pin 8 has 4.4 volts As per one of your earlier emails on this subject you suggested there needs to be earths on 63,65,67. 63 has no pin so no earth there as you suggested however although 65 and 67 have pins but no earth are present. When I turn the key on prior to cranking there are none of the normal lights,bells and whistles happening on the dash apart from low air light and buzzer, park brake, low oil pressure light. My understanding is it should have heck and stop engine lights as well as it should go through the prestart clicking etc but nothing!! Question is are all the things that are not happening when the key is turned on a result of no earth and if so can you direct me to where Thea earths go to. Help!!!!!! Great site mate. Keep it up

[@TonyKing-gw9ei]

ALL I WANT TO KNOW IS WILL IT GET ME THERE JOSH . 🤣

[@238act]

Every engine started out as a big pile of rocks. Think about that one 🤔

[@jamesgarner4127]

I’m head of service for a oilfield equipment company. We work on large frac pumps and other oilfield and construction equipment. The amount of times I’ve seen a piece of equipment brought in because it doesn’t start or has derating issues because of old batteries is very high. A lot of people don’t realize how picky electronics controlled engines are about proper voltage going to ECM and sensors. I’ve seen guys spend a full day scratching their heads about a piece of equipment that had batteries with the normal voltage but no amperage. Slap two new batteries on and voila, back in business 😂

[@Browndogdiesel]

Learnt this the hard way. First thing to rule out when diagnosing an issue is good batteries. They’re cheap and easy to replace

[@johnmickelson824]

Got to test them batteries under load boys

[@mfreund15448]

I have had two batteries in auto applications that has the same 12 volts but when you loaded them….dead.

[@BrianCash550]

I used to supply pressure trucks as tie back pressure on fracs- 40 nights with no wind was always memorable

[@fastinradfordable]

Why mechanical diesels are superior. You’d have got a whole day from a skilled technician. AND got a whole day of work from the machine. … If it didn’t have a silly computer. I deleted the computer from my electronic diesel 14 years ago. Haven’t got so much as a fault code in over a decade 🥹

[@transmitterguy478]

Well, I don't know how your engines start, but mine goes like this. 1, I turn the key, 2, the starter motor turns the cage, 3, the turning cage wakes up the squirrels, 4, they start running in the cage, 5, the arm with the bacon drops down in front of their noses and they run faster. Pretty smooth, huh?😂 I love your videos, Josh.

[@tdotw77]

Mmm🥓🥓👌🏻😅

[@Jack.Waters]

You must have one of those Cummings.. 😂😂😂😂

[@tdotw77]

@@Jack.Waters ***Cummins*

[@gibbsey9579]

When hauling a heavy load, just add more squirrels...

[@Jack.Waters]

@@tdotw77 🤣

[@markjohnson2512]

Hey Josh... Im sure some people have no clue how many things are happening Individually and concurrently under the hood of whatever their driving. Great basic stuff. HAPPY THANKSGIVING

[@raymondbradley6788]

Josh my old FARMALL tractor had a crank start too. Had to watch that darn thing it could break your wrist.

[@fredwiese9978]

Ford tractors too. Mostly crank no start! What the wrist..

[@raymondbradley6788]

@ Fred have a blessed Thanksgiving, sir🙏🏽🙏🏽🙏🏽

[@RobotsCanDoAnything]

Excellent video Josh, Happy Thanksgiving to you and your family.

[@johngibson3837]

Nice one Josh. I like the pony motor idea and a mechanical engine, seams the simplest

[@ivoryjohnson4662]

Thank you Josh for his in-depth discussion!!!

[@robertlinscott1551]

Good one, just the basics but so inclusive at the same time.

[@davidambiguous4650]

Turn the key ,await the glow plug indicator to extingish wait a few seconds and crank , drive carefully until warmed up , forget expecting warm air until around 15 mins , enjoy Rudolf Diesel marvelous invention.

[@rodneyward8357]

Know All of this. Watching until the end lol! Happy thanksgiving

[@Jack.Waters]

Brilliant basic overview. I have only one discrepancy. Coolant. Since about 1997 Coolant sensor can stop the engine run/start. Mine is turned to Engine Warn Light only. Currently driving a Cat 3126 in an FL-70. I have a running 1993 pre-computer 140HP/turbo Int DT466. Cab and chassis have many issues but that engine still runs like a top. Field rebuildable ( I have 3 times ). The only real rough part is those 26 head bolts at 165FtLbs torque. Everyone be where you need to be Safe, Warm and Dry.

[@iaial0]

Dead batteries will sometimes show nominal voltage at zero, load, but the moment you load them with anything they drop below spec, so if you load them with an adequate resistor, or you short them very briefly, you will see the difference. An old sparky told me this trick when testing their voltage with a multimeter

[@johngoldsmith6629]

Get a Load Pro tool

[@KevinMaxwell-o3t]

DO NOT SHORT IT!!! Never, ever short a lead-acid starter battery; in a fraction of a second hundreds of amps will vaporize the wrench or whatever you're using, not to mention the posts, spattering you with molten metal. The extraordinary current draw can also warp the plates within. Buy a proper battery lead tester.

[@antor.j.medrano]

It's amazing to learn it.

[@deuteronimus750]

Smiles per gallon is a good CAT and truck building KZbin channel.

[@markbroad119]

I put an oil pan heater to the oil pan of my '95 clatter stroke for cold winter nights and mornings

[@fastinradfordable]

My 1998 1.9 vw tdi converted to mechanical injector pump has done -40f cold starts. With one battery. And no block heaters. And it makes about as much HP as a 7.3 ps😂

[@deezelfairy]

Turn key, engine go brrrrrrrrrrrr Thats my analysis as professional mechanic 😂

[@markm0000]

My engine has feeeeelllliiinnnngsssss 😩

[@crusaderguy1817]

Mr Ape do you think you could do a video on the differences between diesel fitting and diesel mechanics, if you know enough about the 2? Or if that doesn't warrant a video any advice? I'm taking an apprenticeship soon, I'm slightly conflicted on which one to chose, I'm leaning towards fitting? Thanks boss

[@aaronsmith4746]

Have big trucks gone from 24v to 12v starters?

[@cbmech2563]

A long time ago

[@arthurcitron9774]

Spot on👊🏻🇺🇸

[@chrnc]

Happy Thanksgiving

[@JasonSmith-vd1sz]

Very good video, like your hat!

[@MichaelBlack-ud4bg]

Coolant is considered a lubricant as well.

[@wagon9082]

Good video

[@methanial73]

@AdeptApe are there smaller versions of the same engine architecture of a C15?

[@peteengard9966]

There were C10 and C12 engines. Don't know what architecture you're getting at? C series were good engines. Robust fuel system and good power. Better than the hewi and common rail fuel systems.

[@methanial73]

@@peteengard9966 I am thinking a 2-4 cylinder based off of the C15 wet liner engine. Not sure what cat has in similar or shared architecture. For example Chrysler used a V8 based engine and made 6 cylinders out of them sharing a lot of components (of course not the block). Other manufacturers do the same (cummins for example).

[@armslength2618]

Why would you drag a couple of heavy cat-batteries all over the place, instead of using compressed air starting? My limited diesel experience is large site standby generators and drilling rig engines. Never saw an electric starter on any of them.

[@carlthor91]

Trucks sometimes have air leaks, yeah I know, whod'a thunk!😂

[@miketee2444]

How would you compress that air? It takes a lot of it. I generally trust, for good reason how systems evolve over time. If something doesn't work better it doesn't stick around.

[@cbmech2563]

The air starter, associated plumbing and dedicated air tank isn't much lighter and takes up a lot of real-estate that can be hard to find on a truck.

[@AlfioS]

@adeptape Aside from more power and fuel efficiency, do electronic engines offer any actual benefits over their mechanical predecessors? Seems like the electronics make everything so much more complicated. Would be interesting to compare power gains and fuel efficiency versus reliability and simplicity in design.

[@joshuaharrison9331]

Bit pedantic - but when you were talking about the compression generating heat you said it concentrated the heat in the air - which is not right. The heat energy comes primarily from the work done by the piston, where it is converted into heat - plus the increased kinetics in the gas from the compression. You may have been thinking of the idea that it is nearly adiabatic compression?

[@scav3155]

You don't know what you're talking about

[@funkacalafragilisticexplod5236]

Josh how do you feel about power probes?

[@AdeptApe]

I like them a lot and should be in any electrical mechanic toolbox.

[@funkacalafragilisticexplod5236]

@ is there anyway you could make a video highlighting the uses of a power probe?

[@johngoldsmith6629]

@@funkacalafragilisticexplod5236 You also need a Load Pro.

[@Mega7492]

C-15's do watch fuel pressure on lots of stuff.

[@osamah5213]

هل يمكن أن تقدم لنا عن نظام الهيدروليكي في معدات

[@jneuf861]

Stupid question. Why do I need to time a diesel engine injection pump if it has common rail and electronic injectors? Don't the injectors open electronically and isn't there constant pressure in the rail?

[@AdeptApe]

"harmonics" the pump will work make just as much pressure, just the voodoo will be out of whack with the invisible frequencies

[@tdotw77]

Happy Thanksgiving 🦃🍽️ to you and the family also!👌🏻👍🏻 ✊🏻🇺🇲🦅🇺🇲✊🏻

[@jimforsyth2.]

There are exceptions on the oil pressure fueling systems but on basic system my not matter

[@godsdozer]

Don't forget your key, nothing works then, you have to drive back to the house and get them.

[@peteengard9966]

A C15? That's easy. How about a compression release engine? Shotgun starter, air starter, or even a pony motor. Had an old tractor that started on gasoline and then you switched tanks to diesel.

[@carlthor91]

I operated a grader in the 70's that had a 6 cylinder IH gas start, diesel run engine.

[@Mega7492]

Volvo's are starting to use 24 volts, and somebody will be using 48 volts shortly.

[@jefftheaussie2225]

Double the voltage and halve the amperage, easier on the cables and the starter motor.

[@peteengard9966]

They've been considering going to 48 volt systems for decades. When that rolls out all your accessories will be electric. Even the water pump. This goes way back to the 70s oil crisis. Talks from engine manufacturers trying to squeeze every ounce of fuel mileage. If the engine didn't have to power the air compressor, it would save a butt load of fuel.

[@jefftheaussie2225]

@ Yes the fan can take 30 or 40 horsepower to drive but even an electric fan takes power. That’s where a Horton fan clutch comes in, the fan only drives when it is needed. Have you ever tried to turn an alternator when the magnets are energised? A truck alternator sucks a lot of power too.

[@peteengard9966]

@@jefftheaussie2225 fan clutches have been around since the 50s . Horton is just one manufacturer. Kaiser was another popular clutch. They figured that the alternator was driven anyway. Why not put the fan, power steering pump, A/C compressor and air compressor on separate electric motors would save more power for propulsion. I've worked on mining equipment that had the alternator gear driven from the engine with everything else either hydraulic driven or electric motor driven.

[@johngoldsmith6629]

Typically a mechanical engine will start faster over an electronic engine.

[@minnesotatomcat]

100%. I had a dodge powerwagon with a carbureted 360 and it would start at the bump of the key. There was no cranking over, one revolution and it was running.

[@chrisdidomizio4958]

An electronic engine needs at least a couple revolutions to verify TDC. A mechanical engine just needs the fuel in the hole.

[@mysock351C]

Interesting that the injector is basically like the original cam driven plunger types on very old stationary diesels but instead of a ramp tied to centrifugal weights it’s controlled by the ECM instead. Shame all the modern emissions make simple systems like that go extinct.

[@johnricciojr.5324]

3126 💪🏽 best cat engine Happy 🦃 Thanksgiving & thankyou

[@patrickshaw8595]

LOTS of engines have been built that startedjust by making one spark. No Cranking, ever, period.

[@johnnybigmack1332]

Crank.... click click click. Ah man.😮‍💨

[@godsdozer]

bad day, you got to lift those heavy batteries and run to NAPA

[@Corey-dy2cq]

It's like lighting a fart.

[@nealk6387]

Josh when your mechanic career ends you should become a trainer.

[@mainulislam-z4i]

Hey my guy ! I think you don't need to make money from your lucky customer 😂 why you shared your top secret things 🤔

[@Stacy_Smith]

14:19 NOT TRUE! With a manual transmission, can pull start the truck, or if on a hill you can gravity start one as well.

[@johngoldsmith6629]

If your lucky, and no engine problems, like getting on air, low air psi in the system. What if you have an old precombustion chambered engine? I have had to push/drag them off and rolling down a hill. I dislike it as you may not have full control if a problem occurs.