Not me watching this video for 27 mins for him to say “this plug.. is bad” 😂

boy was this customer blessed to have a mechanic such as yourself, taking a look at their vehicle.

What I liked about this video was that you took the time to use your senses. It drives home the idea that just making some basic observations can put you in the correct "diagnostic funnel". "Feel" the misfire, "hear" the even cranking, "smell" the excessive fuel. Those three things scream ignition problem... Sure, there are other things to consider but, it is a valid diagnostic direction to start with.

That was the BEST detailed video I have ever seen. I have the exact same problem on my 2011 Cruz Eco. Now I know every issue that it could be. Thanks for making the video.

The best diagnosis I've seen so far, step by step breakdown of where to start and where to go. Being that I have the same car, same problem. Nice video work too. AWESOME TECHNICIAN 👌

This video was super informative and I wish many videos were like this in thought process and in detail. Most videos show the one problem it had and exclude everything else that could also have been the problem for us viewers.

Bad plug, huh. Very cool fix. I appreciate that you talk us through the diagnosis with your thoughts. Good stuff for a DIYer like me. Thanks!

this is exactly what is going on with my 2014 1.4 Cruze. Thank you

very helpful video same issue in my cruze changed spark plug everything is fine now ❤

Best video I've ever watched and most detailed by chance what fixed the under boost problem

no offense guys but... I'm fascinated with all the tech info, and diagnostic equipment... that's why I watched the entire video, but if my car was misfiring, the plugs would have been the First thing I checked! not the last thing. when I think about the cost related to auto technicians and hourly charges, not to mention the waste of time in the shop. Man you took 2 days to find a bad plug? hope u did not charge the customer by the hour! I'm not a mechanic. I guess if I just swapped out the plugs and it fixed the problem temporarily I would never have known if it was a fuel injector issue or a coil issue or something else causing the plug to misfire. Still I got to compliment to you for paying attention to detail!

I feel like thomas edison watching these. "I now know a thousand ways NOT to fix a misfire". But very informative along the way. As a 55+ yr old guy who always worked on my own cars, seems like with all the high tech diagnostics, sometimes a miss is just a bad plug. After 70k miles I would look there first.

I have a 2011 Chevy Cruze with 113k miles and had misfires and I just replaced the whole coil pack myself and it’s been running perfectly fine ever since then. Other than that problem my car runs perfect.

I like your analysis and tests done. The fluid in Cyl 1 is sure a mystery. A friend of mine’s same car with exactly the same issue. I suggested change all the plugs. It’s a good thing your issue is similar and nothing major. Her car does have an oil leak issue which could be more. Thanks for the video.

An older, experience mechanic such as myself would have taken the easiest, and most likely suspects out of the loop first. Those spark plugs would have been the second thing I removed and taken a look at. ruling out the easy, and least expensive items first often saves hundreds of dollars in labor time. This is why I became my own mechanic 40 years ago and build all of my own computers. I have empathy for people who do not possess the skill set needed to be their own mechanic and troubleshooter.

For those who said that he should first check spark plugs, what if it wasn't spark plugs or ignition coils, or if is it hard to get near coils. Then what? He give us several methods and procedures for diagnosis

Excellent video! Really appreciate the thorough diagnosis process! 👍🏼

As an old guy who has worked on cars my whole life, and not having a lot of diagnostic equipment, my first guess would be spark plugs and I would have started by pulling them first. Wet in the cylinder? Not burning the fuel it is getting. Nice look at the diagnostics but I'd have fixed that miss quite a bit earlier.

I definitely prefer this thoughtful scientific approach, over the blind plan to blast off the parts cannon with plugs, then coils and boots with minimal testing. Yup, some guys go fast in an effort to minimize labor cost to the customer, or because they are uncomfortable with the technology, or because they want to get the car out the door without really caring what was wrong. But in the end, I'd be disappointed if some kind of real diagnostics were not done. And if the parts cannon approach didn't work, those same guys who sarcastically claimed their approach is better would be looking to somebody like you who could chase it down a little further. This case is more complex than a plug, you also had the low boost and the mystery of coolant loss. Better to get as much info as possible.

I like the cruze due to a buddy of mine has one. Not really a fan of any turbos. Yet, use good synthetic oil, and change your oil and filter often. Working on cars pretty much look a the simplest or easiest thing first. Pretty good video, Tri Auto. 😊

Would have checked PLUGS right away after good start to each & good AMP to each. But good to see how to check everything. Thanks for doing complete check on video.

If you're having a Misfire, it could be your coil Pack, $199 part on Auto zone, But only $50-75 on amazon. It's a common problem in Chevy Cruze Models. It took me a while to find out what was wrong with my car. If it's running rough, Powering down, not wanting to accelerate with out jerking... if it's not the Plugs, change the Coil Pack.

Your video was very helpful. I got my moms car fixed with this video. You went through all the stuff!!!

Great video and diagnosis. Cruzes are well known for leaking water pumps. Not sure if you diagnosed the p0299 or not but check the wastegate lever for excessive play. I've also seen cracks around the wastegate seat.

I have used a hair dryer down the spark plug hole, it will evaporate gas in about two seconds, if coolant it won't, this trick works great for a flooded engine in the winter.

I'm no mechanic but I would have checked the plugs much earlier

I would like to start off by saying thank you I had same problem and looked it up I got your video and it was exactly what you did. This was a very good video and I liked how you took the time to explain every detail please keep the videos going thank you.

This was very informative. And the best part my cruze 1.4 turbo is in this same situation. Im gonna have to do a check on it now following the things you said. Hopefully it fixes my cruze thanks.

Good video. One thing I wanted to note is that fuel trims are gonna be off when you have a misfire.. also loop status can be affected by a misfire. The computer will keep the vehicle in open loop and go to some default numbers for the fuel trims to help save the catalytic converter.

Good job Sometimes that’s what old school does you go back to old school and sometimes you get the trouble fix faster sometimes but you did a good job. Thank you for your info I like your video. Have a good blessing day Felipe, Elpaso, Texas.

Awesome video. In depth and informative. Currently having the misfire issue. Husband order some spark plugs and hopefully that solves our misfire issue! Thanks!!

Nice diagnosis...I see you already found the Pico COP secondary extensions. They'll speed up the diagnosis but swapping plugs & boots works also.

Wanted u to take the plug out a long time ago. But, the different scope tests were great. And the analysis was very helpful!!

This video is awesome! Can you do videos like this for everything in life? So much common sense and intuition! Great job! I will let you know if this fixes mine when the parts show up!!!

thats why i like my thermal imaging camera , you will see the temp difference on the coil pack and no need to remove the coil pack , i have versus pro as well ...

my cylinder 1 was cracked in the tube and the top of the coil on cylinder 1. Swapped it and did plugs. Runs like a champ now.

I have a 2014 cruze , with same issues !! Thanks for this video it help 100% thanks man!!

When diagnosing a rough running condition, swapping the plugs is the first thing I would do since can't swap the coils.

Very good diagnosis. Can't believe all the "expert" haters.

Thank you so much, Learnt on how to approach a problem for solution

60,000 mile suggested replacement on plugs in the 1.4 engine. My wife's car just hit 67,000 and has developed a small misfire under acceleration. I'm gonna throw 4 plugs in it and cross my fingers.

A most exellent video sir.very methodical,clear and precise,superb sir.steve from the uk.just subbed.

Why would you not swap a plug around the first time you had the Coil pack out, kill two birds with one stone? You knew it was Ign. related, so why not do it and save some time?

after running the engine and you had the coil out, without pulling the spark plugs out, you could shot a infer red thermometer down the spark plug well , the other reading will be allot higher on the ones that are firing right.

Same issue. Replaced coil pack and plugs. Still random misfiring.

Why did you not get to checking the Spark Plug on the number one spark plug, right away ?????

Appreciate the step by step diagnosis.

Good video, great explanation, I appreciated.

Same thing just happened to me. I changed all the plugs but still the same issue so I changed the all 4 spark plug cables and is fixed the issue.

Working on a flip cruze I found my coil issue finally the inside at the coil was all corroded

Nice video, I following u from Iraq.. thanks for help.

I have a 2015 Cruze 2Lt with the turbo. I am getting a random misfire. The last time it happened is shook the car really badly. Any ideas off the top of your head?

Did you figure out the issue with the low coolant in the Chevy Cruze?

some good videos from you so far keep em coming

Enjoy your videos thanks! These live diagnostics tell it like it is instead of staged KZfaq repairs. You show how gathering competing evidence can often be misleading such as the empty coolant bottle. The color of that plug from cyl 1was interesting. Was it just a faulty plug or was the plug fouled - a symptom of another problem? Excessive fuel or oil entering the cylinder perhaps.

This is the reason I went to school so I can't get screwed by mechanics. Misfire equals, check spark plugs first. Just the time and diagnostic alone will cost the owner $100-$300, for a $3-$5 spark plug. Should have took 15mins tops, if that.

I have the exact same issues with my 2011 Chevy Cruze! Only I don't have an advanced Enough scan tool. I'm going to change the spark plugs and hope that fixes it. I have the same issue with the low coolant, my issue though With the low coolant. My radiator fan does not come on any more.

Do you ever figure out the p0299 code. Did the turbo need to be replaced?

You never mentioned what happens to the spring contact when you pull a boot off. One stayed...the other came out.

Great job but that’s usually my first step when it’s super easy to do, but other way great job curious if your still using the. Versus

i have on my chevy cruze 1.4 PO 300 multiple misfires. PO 36 Po113 and service traction control and stability control light on. I have changed spark plugs and coil pack plus new negative cable no luck at all

Step one for me on a cruise with p0299 code is to pull the oil cap with engine running likely will be so much vacuum on crankcase it will hold the oil cap in place if so must replace valve cover as pcv is built in. If not i smoke crankcase and intake system. There are a few tsbs on pcv issues

Great video, learn a lot. Thank you.

How to solve the problem? Don't purchase a Cruze. I've babied my Chevy Cruzy and it's still been in the shop; I will be selling it this summer.

Great tutorial! I read throughout the comments and kept seeing dollar signs...I have to ask...how much was the bill?!!!

great video TD sparked my interest [no pun intended] in spark plug test wires pico sells a four pack they are low resistence with a male end and a long boot female end 150 cocos the Subaru wires will probably work just as well just some food for thought thanks again

I’m having a p0300 come on Terrain it throws code only while raining or after sitting in rain weather any idea what to look or test

Good videos man. You have a new subscriber! Keep these videos coming!

U are just doing a job that makes me so easy doing for my car really thanks.. love from australia ❤️

Nice job on the video, well done.

Those misfire counters r really cool!! Enjoyed the video and am subscribing!

Wish this guy would work at the dealership I just brought my car to. They're telling me that I need to replace the engine and it's doing exactly the same thing as this one, was giving them the exact codes that this one was pulling up as well.

Hey man great vid... My chevy suffer the exact the same problem, same error codes. P0300, U0100-71... My mechanic replaced, spark plugs, coil, catalytic converter....problem not solved. Maybe the other code U0100-71 is the main problem and causes the misfires?

I would’ve swapped coils or checked plugs ages ago! but great info for reading these fancy scanners.

you still doing youtube? havent seen anything new from you in awhile. you have great troubleshooting skills

my car was running good all day long until going home at night going up hill then all hell broke lose. Service traction control and stability control on dashboard flashing check engine light 😮

mine did the same thing replacing plug is temporary fix... antifreeze is getting into that cylinder.... #1 ….

These all in one coil pack design is a real PITA. Vauxhall in the UK has been using them for nearly 20 years. Super hi failure item around 60k.

Great fix! Do you know what plug wires will work with that style ignition system? I think $160 bucks for four spark plug wires is a little ridiculous. Was the misfire also the cause of the low boost code?

What kind of scanner are you using? It's very detailed and I would like to purchase one.

do you know the part #'s for the plugs and boots? Thanks

Great information! Thanks

I have a Chevy Cruze 2011 1.4 lt turbo. My car is experiencing a random misfire code p0300 & p0299. This is my first car and also the worst purchase I’ve ever made. Every time I fix something I have to turn around and fix something else. Before this problem occurred my car had been sitting for a year because I needed my engine replaced. So my engine finally got replaced about 4 weeks ago everything was going good. And then I went and put gas in my car with in the next 24 hrs my car starting making jerking movements and giving rough start ups. I video recorded the situation and my mechanic said it was a misfire due to me putting in bad gas.

Just 1 plug took you two days..

hi, I have a 2013, 1.8l Cruze ls AT, my problem i have a water pouring noise i think it passes through the coil, then a humming sound on the cervo, can you give any advice, i feel this is a lemon car. but i learned to love the cruze, please help, thank you.

My customer also had P0300 but I found that fuel pressure when cranking is 60psi, but pressure while running is 45psi.

THAT is one clean engine bay.

My chevy also misfire. What will be the issue. Please guide me. Plugs or coil? I have did the diagnosis he said some sensor issue. Please advise me

As an interprovincial tech , I would have disconnected each injector lead , plug out and compression test while plug out ? There’s no magic here people!

The car starts perfect does not have a check engine light on. Is it necessary to change the cool pack also or just the spark plugs?

I'm no expert but would it be using up more gas because of this?

Quick question. My adapter piece to connect my boot to the coil pack broke. Would I have to order a whole new coil pack or could I buy something to replace it?

So I have this exact problem on my '14 cruze with 1.4T. Missfire on cylinder 1. New plugs, gapped correctly show color change halfway up the strap. Also installed a new coil pack. Compression checks out 200 psi across the board. Fuel injector resistance checks the same across the board at 12.2 ohms. The wires that make up the plug that connects the coil pack all seem to be in good condition. Female ends of the coil pack plug show no corrosion. I have run out of ideas at this point. Before any work was done, we had been getting a P0301 code. After new plugs, new coil pack, and new injector on cylinder 1, we are getting the code P0300. Any help is genuinely appreciated.

I have an old Autel MaxiDas. I'm not sure if it has that feature

How many miles on the faulty plugs? A q-tip dropped into the #1 to collect a sample of fluid, gas or orange coolant? Old school would say, faulty booth, bad plug, change all. Heat is the problem in #1. Too hot, cooler plug. Electronics are neat, but visual says a lot ,faster. You learned how to do it faster,just look at it.

Why was the coolant empty? Seems unrelated to the misfiring issue unless it was leaking internally into cylinder 1. I have a similar issue is why I ask.

I think main issue here is head gasket problem. Coolant leaking into the cylinder and smells weird when it burns along with the fuel.

It's the head gasket leaking coolant into the cylinder fouling the plug that's why the coolant was low I had the same problem on my Chevrolet Trax ! The coolant will continue to leak and foul the plug and loos coolant! Bet it happens again!

Cheap in line spark testers might be a way to go instead of plug wires

Did you figure out the problem??