"Hybrid engines are brutalized to death by opposite working conditions to their "designed in" god given talents. The fact that those from Toyota take longer to die is not because they have kinder jailers". Sun Tzu
Same thought. it still crazy even if the Valves got hammered, why the intake valves are not opening. Must mean ether the cam is completely gone or the rocker arm, or the valve itself is broken.
During the first start in the video, I thought I heard the engine cranking like it had low or no compression on at least one cylinder. When Ivan did a compression test and found no compression on #3, I thought to myself, my ears did not deceive me. Soon, we will get to find out why. It can't be a broken cam. Cyl #4 is contributing. My guess is a rocker was not seated right and got spit out. Great detective work so far Ivan. I can't wait to see what went wrong.
On a Prius there is a damper disk between the engine and transmission. Sorta looks like a clutch plate. It’s purpose is to absorb vibration of all the engine stop/starts. When a Prius misfires that damper makes the sound you’re describing. Prius owners lovingly call it the “death rattle”.
A neighbors Prius sounded like that. Local shop said he needed an engine. He brought it home and we found it was just a bad coil. Wonder how many Priuses owners get charged for an engine replacement when its really just a simple misfire?😳
I usually stop the video after 1 or 2 minutes and try to think through how i would approach the problem. This is usually a good exercise for sharpening your diagnostic process. My approach for this situation would be: some sort of mechanical integrity test (RC or otherwise), followed by ignition system testing, then fuel system and lastly engine breathing ability. This usually gets me to where the fault is. Thanks Ivan, these case studies are very entertaining and illuminating.
@@PineHollowAutoDiagnosticspoint taken, RC test is very difficult on a hybrid🤔🤔🤔however....it might be easier to perform an oldfashioned compression test on this thing given the history. with the Pico it is possible to measure the Ckp signal and the no#1 ignition coil and using the math channel to determine which cylinder is misfiring. However, getting ahead of myself, on this vehicle a low tech approach by swapping coils/plugs is preferable due to easy access. Thanks Ivan, i am always learning.
@@stefaniulaurentiu7603I agree, especially since the Prius engine is *_NOT_* an interference engine. Look for a problem with intake rocker arm or pushrod on that cylinder.
I know audio from the camera doesn't capture true sounds, but that thing sounds like it's about to throw a rod. Oddly, it sounds almost ok with plug removed from #3. Has to be a mechanical issue.
you couldnt put a scope down the cylinder to look at the valves and manually rotate engine? or its just easier to pull valve cover? no compression test?
Nice video and diagnosis. I’m placing my bet that there’ll be some parts required to fix it. 🤣🤣 Customer’s comment about timing being correct now got my attention.
As of the test for spark with the plug & coil across the engine, showing good spark: My guess - Valve problems; something bent from when the valve timing was wrong? [The owner stated the cam timing was NOW correct, after re-checking it, in the intro information. That implies it was originally set incorrectly].
Ive worked on vehicles from Dealership, from shops and from DYIers. Where the dealership was told to fix the misfire issue and overheating. The dealership only fixed the overheating issue from the shop that it was towed in from. The truck arrived at the local shop with a misfire. So they threw the parts cannon and replaced only 1 lifter on the passenger side. The truck immediately overheated. The shop said bring it back..the owner said no. So to the dealership, for the misfire and over heating issue. The shop installed the head gasket in backwards. The owner is told, truck is ready. The owner drives it off the lot, within a few miles. Misfire is back. The owner says, i asked you to fix the misfire issue. O...we must have missed it, bring it back. No..the owner takes it home and parks it. They are over 5k into the total cost now. Its a year, the truck is sitting. The owner contacted me. The trailer it to my shade tree. After an hour i tell the customer i found the problem. She agreed to pay for the repairs and buy the parts. Because of my work schedule. It takes me time to fix it. I told her, but all oem parts. About 3.5 weeks. The truck is finally fixed. No more misfire, no smoke from the exhaust, truck runs very smooth. And i did have a subscription to Alldatadyi for all the specs. I didn't Google for information on specs.
I did HG on my prius myself and I think they bent valves while installing cam cradle. Cams turned on them and valves met the piston. It does not take much force to bent valves Suppose to restrain cams prior setting the cradle. But if they set 1st cylinder dtc prior removal, then cylinder 1 and possibly 4 could get damaged. Other scenario, the roller came out. It is very easy to bump it out of the place while installing the cam cradle
I had an almost identical thing happen on a Kohler v twin engine. One cylinder was dead. There was spark but no fire. A leak down test was good but the compression test showed no compression. I took the rocker cover off and discovered that the push rod had bent and fallen out for the intake valve. I replaced the push rod and it ran ok.i never did figure out why it did that as it's still running 2 years later. My bet is the intake valve is not opening for whatever reason.
now THERE'S one to send to Diagnosti-con for next year! this is definetly one for the books. I'm agreeing with some of the others around here...bet something got bent on reinstall.
My Prius engine loved Denso TT plugs, no other plug was running so smooth. These engines are really good with a few problems as headgasket, EGR and oil consumption
Hey, I would just like to point out that if engines are known for head gasket problems and smoking the block due to cylinder damage, that’s not what I’d call a good engine. That’s kind of like saying that Subaru is the epitome of reliability.
I'm all into the diag, and Ivan catches me off guard once again. Now we have to wait for part two. Same PHAD time, Same PHAD channel. Is anyone old enough to know what I'm referencing?
Me thinking he's got the camshaft installed backwards he probably installed the exhaust on the intake side and the intake on the exhaust side, The only other thing I can think of is he didn't get the rocker on right and didn't notice it as my guess is on the exhaust side.
I have found the below useful to keep my Prius running when needing to do diagnostics or warm it up before an oil change since the motor may shut off when the battery is sufficiently charged otherwise. 1 Begin with the car and all accessories turned off. 2 Set the parking brake. 3 With the car in Park, and your foot off the brake pedal, turn the Power Switch "On" by pressing it twice. 4 Fully depress the accelerator twice. 5 Step on the brake pedal and use the shift lever to shift from Park to Neutral. 6 With the car in Neutral, fully depress the accelerator twice. 7 Press the Park switch/button to shift from Neutral to Park. 8 With the car in Park, and your foot off the brake pedal, fully depress the accelerator twice. 9 Check that "Maintenance Mode" is displayed in the multi-information display. 10 Step on the brake pedal and then press the Power Switch to start the engine. Important: DO NOT drive the car in maintenance mode to avoid damage to the transaxle. CANCEL Maintenance Mode by pressing the Power Switch to turn the car off.
Hi Ivan - I am not a mechanic, but I really enjoy your videos! I appreciate your patience, expertise, and the way you explain things so that even I can understand what's going on. However, I didn't understand what the waveforms were showing in this video. I know it was obvious to you, but a little better explanation would have been appreciated. Looking forward to seeing what you find with this one!
no buttered biscuits today......first thought was going to ask what ever happened to the good ole quick and simple relative compression test, but after watching till the end and seeing no valve movement, that may have been a non-conclusive or even mis-leading test. Good job, just took a bit.....but as I think about it I wonder if the starter would show less of compression because it could not inhale or exhale it would just remain in a single state (dead flat)......hmmmm me's might have to test that thought out
My guess he’s got something broken in the valve train. Bent valve could have valve stuck and rocker marking that racket. But I think he’s got those rollers completely off cylinder three. He messed up something during reassembly.
My initial thought was are the coils / injectors correctly plugged in and not crossed, On second thought it nay be incorrect valve clearances or faulty lifters. But will wait for part 2
Early on I was gonna guess they wrecked the MAF sensor by cleaning it since they're delicate and tons of old timers tell everyone to clean it no matter what the actual problem is, but if it were the MAF sensor there'd be a problem on all cylinders. Almost positive that we're gonna find a bent intake valve, missing intake valve spring, or something silly like that.
Could you bore scope it through the oil fill cap? What if you just stuck your finger over the spark plug holes and cranked it to feel the vaccuum. Cylinder 3 would feel a whole lot weaker on the vaccuum side of things.
If a diy guy does something with his engine, first thing to check is the timing they just did or grounds. That is always the first two culprits at our shop when a diy just did work to the car
I thought that you said that the engine had compression ! I am thinking that it's a compression issue & possibly due to a problem in the valve train, the engine does sound unusually noisy so I am thinking that it's due to a broken or missing valve train component on cylinder number 3 !
I bet a cylinder leak down is in your future, but I'll watch the video to see. We do a few of these every year and they seem easy, but someone who isn't comfortable rooting around in an engine might not think so or get good results.
Just writing my chain of thoughts. Headgasket job makes my initial concern to be a timing issue if it runs like crap. But the coil test indicates that timing shouldn't be an issue. Pulling 2 makes it smoother - then a suspicion is that 2 and 3 have swapped sparks for some reason. (that's a classic on old engines with a distributor cap) Firing order on a 4-cylinder is 1-3-4-2 unless it's an unusual engine. And now with the intake valves not opening - that's a "fun" one. Missing rockers is a possibility or something mounted backwards.
My friend did this same head gasket repair last week in the driveway (winter). He caught the head gasket leak while checking oil, finding a trace of coolant on the dipstick. The car only misfired once. All that noise sounds like some parts are missing in the valve train.
On such modern 2010 Prius, I think there is Injector Contribution test from a scanner. No need to hook up Goode-Olde injector pulsing tool. Especially, if injectors are under intake manifold on some vehicles.
I was saying do compression test as soon as you isolated it to the 3 cylinder.. I was wondering why you did all those other tests first. (reluctant to set up the Pico I guess ;) .. Because, the way it was knocking and way out of balance-- I knew there was going to be a compression issue.. I thought that it had thrown a rod and just had a dead cylinder completely... A dead valve is just as interesting though. ;) ... Maybe you can still fix it
Sounds like there might be mechanically something very wrong, klonking as if something metal hits against metal. It'll be interesting to see what's wrong with this engine.
@@PineHollowAutoDiagnostics I understand about Dorman, but I've never seen a documented Autolite horror story. Autolite Used To Be the first choice of hot rodders.
i was saying to myself no compression as soon as i seen that clean plug. im guessing bent valves. why does it sound like a rod wants to come out the side lol.
What is a GOOD brand of spark plugs now a days? Or does it really depend on the vehicle? I've always been a NGK fan but that's in my dirt bikes and snowmobiles.
I run only AC Delco iridium's plug on my Chevy truck. I usually run factory plugs on whatever vehicle I'm working on. I prefer iridium's any day. Fact. My customers bought a set of plugs for his Ford. So installed them at his request. Truck is running bad now. I sent him back. They sold him a used set. No kidding I installed the new set, it's even worse. I go to the parts store myself. I find they sold him the wrong plugs, the guy at the counter can't see what he is selling. I look up the part myself. I go back with the correct set and install them. Finally, the truck is fixed. True story
I always warn my customers, "you know it costs more when you've worked on it yourself right?" XD I had to pause the video while my coffee finishes brewing, Can't watch without my coffee. ;) Good morning Ivan. Coffee in hand, Carry on.
But you only see the DIY'ers that get it wrong. Mechanics never see the DIY'ers that get it right. So the natural tendency is for mechanics to look down on DIY'ers. But I'm laughing all the way to the bank with all the money I've saved.
@@major__kong Well, if they are successful, they don't end up bringing it to me right? Then I don't have to get involved. More power to you DIY guys. I have no problem with y'all doing your thing. Just remember that it costs more if someone has to come in and clean up behind you. ;)
just seen video with misfire guy installed new intake manifold one of the intake ports to misfire cyclinder wasnt machined out . then u said head was milled i am sure they removed over head camshafts looking foreward to ur sext video
i swear these videos have better writing and plottwists than anything on tv in the last 15 years
This is like watching an old episode of Detective Columbo .
Hahah so true 😂😂 and it’s 1000x more relatable
"Hybrid engines are brutalized to death by opposite working conditions to their "designed in" god given talents. The fact that those from Toyota take longer to die is not because they have kinder jailers". Sun Tzu
😂😂😂😂😂😂😂😂😂😂
That motor sounds like project farm blowing up an old lawnmower ! 😂
😅😅😅
Sounds like an "imbalance" washing machine!! 😄😄
We're going to test that Lol.
@@John-wz3iuYa it does
No one can deliver a mini series better than Ivan 🤣
Bet for part 3...😊
Actually exciting one mechanic...two parts by 45 minutes only for diagnostic and changing spark plug!?
@@jackschissler255 😁👍
Have to agree with the comments about bent valve(s). The owner wrote that the "timing is correct now" meaning it wasn't?
"It is now definitely correct" To me, this implies that at some point it was not correct. Red flag up in the air.
My sentiment exactly
Same thought.
it still crazy even if the Valves got hammered, why the intake valves are not opening. Must mean ether the cam is completely gone or the rocker arm, or the valve itself is broken.
Not sure, it works like that. "Oh, it's correct now!" Hope it's not too late.
@@shakalpb1164 Yeah what is odd or seemingly in conflict is "Started and ran good for a couple of minutes"
Compression check would have been my first test after reading that customer note.😂
Yep, instant red flag, " timing is correct "now" compression test before doing anything.
I love the quick and dirty relative compression test. Very little effort and easy to see if a cylinder has slept though the alarm clock.
How do you do Relative compresión on this engine configuration where does not have started motor ?
That wasn't just a parts cannon, that was a full blown nuclear warhead.
Just needed a head gasket 🤷🏼♂️😂
@@PineHollowAutoDiagnostics i hope thats not a spoiler 😂
I have jb welded an oil pan o to my 97 camry and fixed the leak. Maybe somthing similar will fix the head gasket issue.
😂😂😂😂
Ivan: we have compression.
Engine: are you sure about that?
I’d put a scope down cyl 3 to inspect for witness marks on the piston. You know it’s clean enough to see 😂
During the first start in the video, I thought I heard the engine cranking like it had low or no compression on at least one cylinder. When Ivan did a compression test and found no compression on #3, I thought to myself, my ears did not deceive me. Soon, we will get to find out why. It can't be a broken cam. Cyl #4 is contributing. My guess is a rocker was not seated right and got spit out. Great detective work so far Ivan. I can't wait to see what went wrong.
'It is now definitely correct', doesn't quite instill confidence.😂
Whatever you find under the valve cover, I don't think it's going to be good..... LOL !
Jeezus! On camera it sounds like that engine is fixing to throw a rod through the block. o.0
On a Prius there is a damper disk between the engine and transmission. Sorta looks like a clutch plate. It’s purpose is to absorb vibration of all the engine stop/starts. When a Prius misfires that damper makes the sound you’re describing.
Prius owners lovingly call it the “death rattle”.
A neighbors Prius sounded like that. Local shop said he needed an engine. He brought it home and we found it was just a bad coil. Wonder how many Priuses owners get charged for an engine replacement when its really just a simple misfire?😳
Bless those engine mounts.
So let's purge the fuel line 😂 👌👌👌best channel on TH-cam
Ivan, I thought that engine was going to jump right out at you!
wow....very very interesting problem. Can't wait to see part II
With THAT kind of noise, we're done. At this point, I feel it's a throwaway and recycle item. 😆Oh and good morning.
These priuses have some sort of spring dampened flywheel, they sound like they have a spun bearing when they misfire.
@@volvo09 That'll explain a lot about the noise, but that spring dampening is probably taking quite a beating from this.
I usually stop the video after 1 or 2 minutes and try to think through how i would approach the problem. This is usually a good exercise for sharpening your diagnostic process. My approach for this situation would be: some sort of mechanical integrity test (RC or otherwise), followed by ignition system testing, then fuel system and lastly engine breathing ability. This usually gets me to where the fault is. Thanks Ivan, these case studies are very entertaining and illuminating.
How would you do an "RD test" on a Hybrid? ;)
@@PineHollowAutoDiagnosticspoint taken, RC test is very difficult on a hybrid🤔🤔🤔however....it might be easier to perform an oldfashioned compression test on this thing given the history. with the Pico it is possible to measure the Ckp signal and the no#1 ignition coil and using the math channel to determine which cylinder is misfiring. However, getting ahead of myself, on this vehicle a low tech approach by swapping coils/plugs is preferable due to easy access. Thanks Ivan, i am always learning.
Damn, I was running to watch part 2 and just realized this is a new video
Sounds like someone didnt get the timing right then bent the valves. Went back and corrected the timing but then the damage is already done.
Bent valves wrong, there wouldnt be vacuum if valves were bent
@@stefaniulaurentiu7603I agree, especially since the Prius engine is *_NOT_* an interference engine. Look for a problem with intake rocker arm or pushrod on that cylinder.
I know audio from the camera doesn't capture true sounds, but that thing sounds like it's about to throw a rod. Oddly, it sounds almost ok with plug removed from #3. Has to be a mechanical issue.
you couldnt put a scope down the cylinder to look at the valves and manually rotate engine? or its just easier to pull valve cover? no compression test?
Nice video and diagnosis. I’m placing my bet that there’ll be some parts required to fix it. 🤣🤣
Customer’s comment about timing being correct now got my attention.
As of the test for spark with the plug & coil across the engine, showing good spark:
My guess - Valve problems; something bent from when the valve timing was wrong?
[The owner stated the cam timing was NOW correct, after re-checking it, in the intro information. That implies it was originally set incorrectly].
Ivan, I always appreciate your logical approach going back to basics. Great job!
Can't wait for part 2
Send the water pump to Eric at I Do Cars. 😁
That's funny
He might say ‘uncle Rodney is that you.’
We should organise pallets of desd water pumps to be sent to his shop to troll him. 😂
It would be awesome if on one of Eric's videos we see Ivan with a cameo in the background doing a water pump slam dunk!
For the fuel injector flow test, can the scan tool pulse the injector instead of messing with the otc tool?
It's not always possible to do through the scan tool...
Good morning Mr Ivan,hmmmmm can't wait to see part 2😮🎉
Ive worked on vehicles from Dealership, from shops and from DYIers.
Where the dealership was told to fix the misfire issue and overheating. The dealership only fixed the overheating issue from the shop that it was towed in from.
The truck arrived at the local shop with a misfire.
So they threw the parts cannon and replaced only 1 lifter on the passenger side.
The truck immediately overheated.
The shop said bring it back..the owner said no.
So to the dealership, for the misfire and over heating issue.
The shop installed the head gasket in backwards.
The owner is told, truck is ready.
The owner drives it off the lot, within a few miles. Misfire is back.
The owner says, i asked you to fix the misfire issue.
O...we must have missed it, bring it back.
No..the owner takes it home and parks it.
They are over 5k into the total cost now.
Its a year, the truck is sitting.
The owner contacted me.
The trailer it to my shade tree.
After an hour i tell the customer i found the problem.
She agreed to pay for the repairs and buy the parts.
Because of my work schedule. It takes me time to fix it.
I told her, but all oem parts.
About 3.5 weeks. The truck is finally fixed.
No more misfire, no smoke from the exhaust, truck runs very smooth.
And i did have a subscription to Alldatadyi for all the specs. I didn't Google for information on specs.
Got my popcorn ready for Act 2!
I did HG on my prius myself and I think they bent valves while installing cam cradle. Cams turned on them and valves met the piston. It does not take much force to bent valves
Suppose to restrain cams prior setting the cradle.
But if they set 1st cylinder dtc prior removal, then cylinder 1 and possibly 4 could get damaged.
Other scenario, the roller came out. It is very easy to bump it out of the place while installing the cam cradle
Don't know. But I would have been curious enough to do the pico-test on cylinder 1 or 4. Just to have a reference trace.
I had an almost identical thing happen on a Kohler v twin engine. One cylinder was dead. There was spark but no fire. A leak down test was good but the compression test showed no compression. I took the rocker cover off and discovered that the push rod had bent and fallen out for the intake valve. I replaced the push rod and it ran ok.i never did figure out why it did that as it's still running 2 years later. My bet is the intake valve is not opening for whatever reason.
now THERE'S one to send to Diagnosti-con for next year! this is definetly one for the books. I'm agreeing with some of the others around here...bet something got bent on reinstall.
My Prius engine loved Denso TT plugs, no other plug was running so smooth. These engines are really good with a few problems as headgasket, EGR and oil consumption
Hey, I would just like to point out that if engines are known for head gasket problems and smoking the block due to cylinder damage, that’s not what I’d call a good engine.
That’s kind of like saying that Subaru is the epitome of reliability.
Really but ...
But, But, But 🤣
Like a box of chocolates, you never know what kind of nuts been working on the engine
Honey why is my tree dying outside your shop window? 🪟
😂
That is stupid, i never do that.
@@paavohynynen2654 you probably make up for it in other ways
14:45 😂
@@paavohynynen2654 You never work on things either.. So it's not a problem
I'm all into the diag, and Ivan catches me off guard once again. Now we have to wait for part two. Same PHAD time, Same PHAD channel. Is anyone old enough to know what I'm referencing?
I’m Batman
I believe that is a reference to the Adam West Batman
@@manual6speed Pow, Bang, Boom
@@hughjass1274 I am vengeance. I am the night. I am Batman.
Me thinking he's got the camshaft installed backwards he probably installed the exhaust on the intake side and the intake on the exhaust side, The only other thing I can think of is he didn't get the rocker on right and didn't notice it as my guess is on the exhaust side.
I agree with BigBang and david, Original timing was set wrong valves bent and piston damage.
I have found the below useful to keep my Prius running when needing to do diagnostics or warm it up before an oil change since the motor may shut off when the battery is sufficiently charged otherwise.
1 Begin with the car and all accessories turned off.
2 Set the parking brake.
3 With the car in Park, and your foot off the brake pedal, turn the Power Switch "On" by pressing it twice.
4 Fully depress the accelerator twice.
5 Step on the brake pedal and use the shift lever to shift from Park to Neutral.
6 With the car in Neutral, fully depress the accelerator twice.
7 Press the Park switch/button to shift from Neutral to Park.
8 With the car in Park, and your foot off the brake pedal, fully depress the accelerator twice.
9 Check that "Maintenance Mode" is displayed in the multi-information display.
10 Step on the brake pedal and then press the Power Switch to start the engine.
Important: DO NOT drive the car in maintenance mode to avoid damage to the transaxle.
CANCEL Maintenance Mode by pressing the Power Switch to turn the car off.
Thank you for sharing that information.
Happy to help.
Hi Ivan - I am not a mechanic, but I really enjoy your videos!
I appreciate your patience, expertise, and the way you explain things so that even I can understand what's going on.
However, I didn't understand what the waveforms were showing in this video. I know it was obvious to you, but a little better explanation would have been appreciated. Looking forward to seeing what you find with this one!
You ever use a test light too test the coil?
Jack Hammer is a understatement! 👍
Broken valve spring on cylinder 3?
Had a issue like this before and the injector wires were crossed like in the old days when you could cross plug wires
no buttered biscuits today......first thought was going to ask what ever happened to the good ole quick and simple relative compression test, but after watching till the end and seeing no valve movement, that may have been a non-conclusive or even mis-leading test. Good job, just took a bit.....but as I think about it I wonder if the starter would show less of compression because it could not inhale or exhale it would just remain in a single state (dead flat)......hmmmm me's might have to test that thought out
My guess he’s got something broken in the valve train. Bent valve could have valve stuck and rocker marking that racket. But I think he’s got those rollers completely off cylinder three. He messed up something during reassembly.
My initial thought was are the coils / injectors correctly plugged in and not crossed, On second thought it nay be incorrect valve clearances or faulty lifters.
But will wait for part 2
Time for an in cylinder pressure test.
Early on I was gonna guess they wrecked the MAF sensor by cleaning it since they're delicate and tons of old timers tell everyone to clean it no matter what the actual problem is, but if it were the MAF sensor there'd be a problem on all cylinders. Almost positive that we're gonna find a bent intake valve, missing intake valve spring, or something silly like that.
Could you bore scope it through the oil fill cap? What if you just stuck your finger over the spark plug holes and cranked it to feel the vaccuum. Cylinder 3 would feel a whole lot weaker on the vaccuum side of things.
@@hcox1111 1) you would need a foot - long finger 🤣
2) Vacuum would actually feel STRONGER... and mess up your finger haha
@@PineHollowAutoDiagnostics Just hoping to shake that funny bone a little. You are right without the valve opening you could stretch a finger.
Pressure transducer tells all. Keep your fingers in your pockets. 😂
@@vpimike2646 Pocket Pool Player?
dang
The first 10 mins or so of this is max anxiety 😮
Figures a hybrid would sound most ashy
it says it all in the customer note.. to back apart timing chain. NOW CORRECT. bent valve.
when will next part drop?
If a diy guy does something with his engine, first thing to check is the timing they just did or grounds. That is always the first two culprits at our shop when a diy just did work to the car
Depends what the symptoms are... We're dealing with a misfire here 😉
First thing to check is everything you touched. 😂
I thought that you said that the engine had compression !
I am thinking that it's a compression issue & possibly due to a problem in the valve train, the engine does sound unusually noisy so I am thinking that it's due to a broken or missing valve train component on cylinder number 3 !
I bet a cylinder leak down is in your future, but I'll watch the video to see.
We do a few of these every year and they seem easy, but someone who isn't comfortable rooting around in an engine might not think so or get good results.
Just writing my chain of thoughts.
Headgasket job makes my initial concern to be a timing issue if it runs like crap. But the coil test indicates that timing shouldn't be an issue.
Pulling 2 makes it smoother - then a suspicion is that 2 and 3 have swapped sparks for some reason. (that's a classic on old engines with a distributor cap)
Firing order on a 4-cylinder is 1-3-4-2 unless it's an unusual engine.
And now with the intake valves not opening - that's a "fun" one. Missing rockers is a possibility or something mounted backwards.
Open it up. Thanks Ivan!
My bet is on NPR
the fix is in the box in the trunk
🗣👍
My friend did this same head gasket repair last week in the driveway (winter). He caught the head gasket leak while checking oil, finding a trace of coolant on the dipstick. The car only misfired once. All that noise sounds like some parts are missing in the valve train.
What didn't they replace?
Thats alotta part cannon
For a prius
🐈💨
IF IT HASN'T BEEN REPLACED, YOU SHOULD CHECK THE WATER PUMP IMPELLER.
CHECK HOW MUCH CARBON IS IN THE INTAKE MANIFOLD.
Quit yelling
On such modern 2010 Prius, I think there is Injector Contribution test from a scanner. No need to hook up Goode-Olde injector pulsing tool. Especially, if injectors are under intake manifold on some vehicles.
Let me know if you find it in the scanner...
Autolite XP spark plugs are actually top notch. I use them all the time in many different vehicles with zero issues. Ever
I was saying do compression test as soon as you isolated it to the 3 cylinder.. I was wondering why you did all those other tests first. (reluctant to set up the Pico I guess ;) .. Because, the way it was knocking and way out of balance-- I knew there was going to be a compression issue.. I thought that it had thrown a rod and just had a dead cylinder completely... A dead valve is just as interesting though. ;) ... Maybe you can still fix it
Nice video Ivan.
Bent valves
10 hours ago, it looks like summertime out there?
Time to put a camera down that hole.
Good morning Ivan!.
I love Toyota content so much
The cliff hanger!! Lol
Dang... have to wait for part 2? This one is a cliffhanger. Super curios to see what you find under that valve cover.
Sounds like there might be mechanically something very wrong, klonking as if something metal hits against metal. It'll be interesting to see what's wrong with this engine.
I guessing carboned or leaking valves or clogged intake ports
Now that I've watched im thinking timing is off on intake cam or valve issue.
Timing or damage from the messed up timing the owner introduced
Come on Man, Ivan, don't leave us hanging....................
Gotta be the fetzer valve bypass line…grab the pliers and a set of 30 weight ball bearings.
suprised there was no original head bolts amongst the parts canon pieces?... Are those headbolts not torque to yield?
intake valve not opening. Missing lifter component on rebuild.
A cliffhanger!! Dang it!
Did he instal the chain wrong and bend a valve.
Why is there a general mistrust of Autolite plugs? My Toyota runs good with them.
Autolite is like the Dorman of spark plugs haha
@@PineHollowAutoDiagnostics I understand about Dorman, but I've never seen a documented Autolite horror story. Autolite Used To Be the first choice of hot rodders.
Doesn't your scanner have the power balance test? Is it better to do it the way you are or isn't preference?
Rockers out of place and getting whacked by the cam lobes. She sounds like carnage is being created right before our eyes.
11:59 that sound 😱😱💀💀💀
i was saying to myself no compression as soon as i seen that clean plug. im guessing bent valves. why does it sound like a rod wants to come out the side lol.
It's off balance less on outer two cylinders only
He just installed the classic Jake brake on #3, it's uncommon but some folks do it for shlts and giggles.
What is a GOOD brand of spark plugs now a days? Or does it really depend on the vehicle? I've always been a NGK fan but that's in my dirt bikes and snowmobiles.
I run only AC Delco iridium's plug on my Chevy truck.
I usually run factory plugs on whatever vehicle I'm working on.
I prefer iridium's any day.
Fact. My customers bought a set of plugs for his Ford. So installed them at his request. Truck is running bad now. I sent him back. They sold him a used set. No kidding
I installed the new set, it's even worse.
I go to the parts store myself.
I find they sold him the wrong plugs, the guy at the counter can't see what he is selling. I look up the part myself.
I go back with the correct set and install them. Finally, the truck is fixed. True story
Thank you Ivan
I always warn my customers, "you know it costs more when you've worked on it yourself right?" XD I had to pause the video while my coffee finishes brewing, Can't watch without my coffee. ;) Good morning Ivan. Coffee in hand, Carry on.
But you only see the DIY'ers that get it wrong. Mechanics never see the DIY'ers that get it right. So the natural tendency is for mechanics to look down on DIY'ers. But I'm laughing all the way to the bank with all the money I've saved.
@@major__kong Well, if they are successful, they don't end up bringing it to me right? Then I don't have to get involved. More power to you DIY guys. I have no problem with y'all doing your thing. Just remember that it costs more if someone has to come in and clean up behind you. ;)
just seen video with misfire guy installed new intake manifold one of the intake ports to misfire cyclinder wasnt machined out . then u said head was milled i am sure they removed over head camshafts looking foreward to ur sext video
Should have done a compression check to start with.
Is Mrs. Ivan wondering why the shrubs outside the garage window are dying? LOL!
Can't wait!
Another weird one, Ivan! Something is definitely off, under the valve cover. Curious about Part 2 :-)