a BIG Mistake! How BAD Is It??

[@amjrpain919]

I'll take a little embarrassing mistake over engine damage any day! 🤨👍

[@That_Dude420]

Facts simple enough mistake when I seen the and heard the pop I thought the worst, So happy for him it was something so simple

[@jondoe4667]

Me too. A couple years ago I did the head gaskets in my Silverado and when it was all done and buttoned up it still wanted to run hot. I was so mad that I just knew I did everything right, and didn't know what was wrong this time I parked it and didn't even open the hood again for like 4 days. Then when I was cleaning up old parts I found the brand new thermostat that I apparently never installed because I accidentally stuck the old one back in it. And in my bones I just knew that the radiator, water pump, t_stat, hoses, head gaskets...... Everything was new and there's no way this could be happening. 😂🤬

[@ronclements2002]

Amen. They don’t cost ten of thousands of dollars. Just a little humility 😂. I love when he shit talks the driver even when it’s him 😂

[@CabinontheHill]

Glad your still making videos!

[@johnkhicks6581]

With all the cameras you guys have along with Monza' Damon and the rest yall should do the list again with real street cars again live on KZbin

[@picklefart]

Live on KZbin would be tough. People would figure out the spots and start showing up

[@chuckharper9129]

That would be awesome!

[@davidmondragon6037]

I agree that would be pretty kul.

[@anthonybillings6554]

Yessir!!

[@wesw9586]

You know it would get the views! Discovery is over it so I doubt they'll offer any resistance.

[@Chevyv8man1]

Makes perfect sense to me. It's like flooring a street car and turning off the key off with the gas pedal to the floor and waiting a sec or two and turning the key back on (BOOM). Use to have a ball doing that in front of a golf coarse when I was a kid and watching the old farts jump. LOL

[@Frankie--da-fixer]

LoL we use to do that in my friends moms car,till we blew the muffler wide open 😅😅😅

[@That_Dude420]

100% made me think of the very same thing, I had a old work truck we use to scare the syht outta people when they weren't paying attention 🤣😂 sounds like bomb💣 going off 💯✌️

[@jasonduncan6398]

Same exact thing I thought of

[@rickylelliott]

Lol in australia we call that a KEY Banger 😂 and yes ive blown the exhaust clean off just after the extractors more than once doing it 😂

[@mdp66403]

@@That_Dude420😅 I used to do the same exact thing in an old work truck! Mufflers didn’t even last a week!😅😅

[@HOAOffender]

I can't stress enough how grateful I am that you let us in on so much of what you accomplish & endure. Mad Props. Everyone says "I'm just keeping it real," but you Sir...stand on it. This one was cool enough that I'm not even mad there's no Jackie or Kitty cameos.

[@POSminiracer]

Makes sense. My lawnmower will do the same thing.

[@goldenwheeledbanshee9160]

I'm glad it's not hurt, thank god you got to take valve covers off. I knew u was still into the throttle when I popped fire outta both sides of headers. Yes drivers can't and shouldn't be trusted period! Thanks for the update.

[@michaelwynne4346]

It sounded like when i was drag racing motorcycles, i had a air Shifter on it, push the button to shift, it would kill the Ignition to allow it to go to the next gear and it would shoot a giant flame and a big bang out the exhaust every gear change just like the Crow did at the traps.

[@legato8278]

One of the most beautiful cars on the internet

[@mattthemorningafter]

Facts

[@fredgaffney6122]

Tru story.

[@hotrodhustle5456]

I agree it looked great coming out of the trailer

[@anthonypatton8331]

Agreed. There’s an original orange one for sale here locally and I wish I could buy it.

[@geremystarr7096]

I've always loved it I honestly thought it was crowmod only

[@chrisstratton3430]

Totally agree. We used to hit the kill switches for a split second on our crotch rockets with the throttle open to induce the same backfire . People would think someone was firing a gun. Just as sharp a sound. All in the exhaust. Really enjoy the candid and raw J&J. Love it guys!

[@rosskrause3926]

I know a guy 30+ years ago that had his old Ford trucks distributor wired to an on / off switch..he would be driving and see people out in the road and he would flick the switch off to on and when the points made contact with voltage "BOOM'' just like somebody fired a shotgun..it was crazy !

[@dionrau5580]

My 113inch Roadliner bangs like a gun when I decelerate, gets people going to ground when I go thru some neighborhoods....

[@chrisstratton3430]

@@dionrau5580 I did the carbs on big V TWIN Honda some time ago. It was so fat that it was blowing out both ends. It was so rich before I got it that it blew the carbs off, caught fire and melted the choke. No idea who jetted it before me but they clearly had high hopes.

[@chrisstratton3430]

@@rosskrause3926 Pride Parade Patrol. ;)))

[@dionrau5580]

@@chrisstratton3430 Clearly 😆💥

[@michaelmoline2445]

That's some good tech talk I think you're right on the money

[@79tazman]

Yeah that explains it and that's why it popped out both sides because you killed power while still feeding it fuel. I makes sense I was thinking you hit boost cut or something at first anyway glad it's all good and you don't have to replace any pistons or anything.

[@briancoleman615]

8 little soldiers said it looks good Boss!

[@connerj4619]

I still back and watch that live when I need a good laugh

[@calvinlevie943]

thank you. drove a big 22 foot box truck many years ago ,you are right . i would turn the key off and turn it on again and sure enough scare more people with a pretty good back fire from turning the key off and on while the truck was still going .chief you are a genious . the crow lives on .keep on making great entertainment and great videos

[@LoneWrencher]

MY old bb comet has done that. ps i have owned and street raced my comet since i was 19 im 61 now and still race it.had 4 engines in it over theyears

[@Edizzle15]

P.S.🥴

[@mikesautomaintenance5780]

💯 right on what u think happened the log don't lie pre ignition back fire was still dumping fuel in as your holding it to the floor when u killed the power

[@Anthony393turbo]

I think you hit the nail on the head. I figured it was ignition related. Just not how you described your run. But it makes perfect sense. lit up whatever fuel was left on shutdown in the pipes. This is why your diag skills are second to none.

[@BenjySparky]

Chief, y'all rock! I think you hit it exactly on the head with what you're saying. Back 25 years or so ago, I was driving down the road, turning off the ignition with my foot to the floor to get it to backfire, and it blowed the catalytic converter in half😂. I'm glad you figured it out, though. Peace

[@codyhair7310]

It all makes 100% sense why you wouldn't see it on the log and I 100% agree with you. Damn good detective work

[@anthonybillings6554]

Fastest car on the planet with quark valve cover gaskets HANDS DOWN!

[@justinshearer3016]

gotta be lol

[@benjaminseward9553]

I noticed that too!

[@kylestephenson3004]

Cork ???

[@turbotonye-4124]

Lol right 😂

[@jamesbeck5113]

@@kylestephenson3004 quark...cork. Horseshoes and hand grenades? 🤣

[@Fullerperformance01]

Good investigation Chief. Think you hit the nail on the head.

[@turbotonye-4124]

Hey all in all id be happy with that. It just goes to show how much drivers rely on their habits while behind the wheel. Changing tire size missed everything up. Lol. Thank god for data! Not only helps with tuning but also helps with the localisation of problems

[@bendaves77]

That makes sense since in the video you're still hammering on the throttle and then boom followed by slowing down.. I'm no tuner but it makes sense.. I was hoping you were going to have to call Butler and get Mr Crow one of their big block Pontiac engines

[@JuanGonzalez-mi9uj]

Hey chief and Jackie i totally agree the pop was because you killed it while still in full throttle which would give out a bang everytime you do that. Also great job on breaking it down so everyone can understand as always keep up the awesome work guys let's go 💪💯

[@fr.rustymatheny7707]

Absolutely makes sense of video, data , plugs and upper end being ok." Kicked out ignition under full fuel load- pow!

[@justinshearer3016]

yep!

[@braynrosowski2463]

Yep sounds right. You went through the plugs and they were fine. Same with rockers. Only thing just to check is the header bolts.

[@505Tempest]

The Chevy/Ford guys are envious of how easy it is to change plugs on our Pontiacs 😎

[@justinshearer3016]

i make sure to do it with one hand and video it every chance i get just to rub it in lol

[@crautoguy8384]

Only the Ford Guys

[@crautoguy8384]

Only the Ford guys

[@crautoguy8384]

Oops

[@HomeMadePowa]

I LOVE HIS PUSH BUTTON TO BAR THE ENGINE

[@Peteblz1]

I love that you show so much with us! This is the best racing channel ever! ❤

[@warrencwwatts3994]

The old chief is Back!🎉 The humble man is what everyone loved about chief, These last 2 videos are the Humble Chief. Best content in awhile 🎉🎉🎉

[@1971twinTA]

Impact on the spark plugs! Gotta love them ole Pontiacs!😂

[@onefastgmc]

I'd trade my SBC for that ease of access in a heartbeat. Matter of fact, my next engine may just be a Pontiac.

[@philipbartruff3361]

I love all the the info we’re getting on these videos. Like I said on the last video. I love the technical info we get from Chiefs videos. I’m a tech geek. Love it

[@bendaves77]

Sweet, thanks, you all didn't make us wait a week or two to find out what is going on with Mr Crow.. now when is Caddy Jack going to get his engine that Jackie bought him?? You know that camaro 383😂

[@edwinyoung2719]

What you said makes sense the only other thing I could see making it do that is loosing the main power to everything

[@Rozza43]

Gawd damn that car is so beautiful.

[@kadenfox7558]

Love watching these types of videos. Feels like a constant behind the scenes, feels a lot more personal. Good on you chief for looking into what happened and being open to put it out there for us to see. Shows were all human and stuff happens. What you said makes a lot of sense going from movement and then just coming to a halt definitely could cause that bang. Seems like more racing and less problems heading your way!

[@georgeperez4231]

WOW😮 you're so detailed 👍

[@scottjarrells8339]

I had a 408 Pontiac motor in a dirt car. I understand why Chief runs a Pontiac motor they have a crap load of torque. Keep up the great work and stay safe

[@carterrunninghorse4878]

You hit Mach 1 ..almost went back to the future😂😂

[@valentinoharper6296]

Big chief, you are absolutely correct. I dealt with the same problem with mine its naturally aspirated, I was turning off the ignition as soon as I was going through the lights Full throttle and shutting off the ignition.I would hear that pop when I go through the light when I get to the end of the track.

[@dionrau5580]

I think...you went fast, car made a big bang... You didn't break nothin.... it's all good 👍 ...Do Again...

[@DisgustedGenXr]

It makes perfect sense and you put to the floor. You shut your coils off. You had no ignition withdrawal fuel in your cylinder. Pastor Raul into your red hot header pipe and went home. That’s why there’s nothing wrong with the motor. Makes perfect sense. Very good job diagnosing that you do. You always have impressed me. I’ve been following you since the first time you showed face on pinks.

[@earlrichardson385]

Those dang drivers. Such a headache for the tuner. 😉

[@MidwestStreetCarsAuto]

lololol

[@smallman5509]

Yeah, I feel your idea of what happened is correct too. I wonder if keeping boost aand the ignition cuts, it just dumps thst boost and maybe fuel in cylinders just out the sides.

[@D1_AWM]

Hey, good thing you know a good mechanic 😂😂😂

[@justinshearer3016]

the driver hates the tuner, the tuner hates the driver....but the mechanic hates everyone

[@jackcaldwell485]

I agree with what you said happened

[@sillycatthing]

Sounds like you said. There is a micro second when the cylinders still get fuel and the exhaust temps are high enough to ignite which give the backfire. If it were out of one bank I would look closer, but running at that RPM the fire was almost at the same time on each bank. All else fails, bring ol' Fred back to the table! Miss seeing that car. Good luck guys!

[@anetworkservice]

Compression test? You hit the switch early, or an electric issue? OOPS!! Oh well. I do like the golden rule. The driver is full of doodoo. LOL You don’t see it because you turned off the logger.

[@justinshearer3016]

frickin drivers....cant trust em

[@anetworkservice]

@@justinshearer3016 Love it! Even funnier when it's you. ROFL

[@andysuhy8912]

I think you’re right on. It kind of sounded like the pop happened when you were still at WOT. Can you program how the ECM shutdowns, meaning is there any ability to kill fuel milliseconds before spark? That might prevent this from happening and potentially damaging the turbos.

[@Brykk]

Sounds reasonable

[@thomaslamalfa6179]

I agree you shut down with your foot on the throttle and built up raw fuel and it ignited in the hot headers. Your car looks great. I’m a dirt track guy, when your coming down the straight away and you let off turning in what ever fuel is going to g through the system over powers the ignition and raw fuel hits the headers and we get flames out the exhaust. It hasn’t caused an issue yet. Keep it fast and straight, The dirt track millwright.👍

[@kilometers1115]

Gotta yank that valve cover off immediately lol

[@ndrew19]

Solid diagnosis and deduction my man. Makes total sense. Stay humble. Stay the course.

[@Rosy_87]

The exhaust backfire was likely caused by running cork gaskets! 😂 Just kidding, I think you nailed it on the head with your hypotheses. Looks like the engine is fine. The driver just needs more practice. 😅

[@davidtaylor3094]

Need to speak to ur tuna

[@4nk8r]

Makes perfect sense . Raw fuel in hot exhaust . Nailed it !

[@joshsillsby4229]

That’s some Shearerlock Holmes shit right there….

[@sirmonkey1985]

Completely agree with your assumption. Just looked like a bunch of fuel dumped into the exhaust. The only thing id maybe worry about is if the pop overspun the turbo's.

[@vicb9470]

Tell your tuner to never call Big Chief full of sh*t ever again. The audacity!!!

[@russlivenspire7689]

You are making sense. If the throttle cable/linkage are good then your looking at at talk with the right stomper or the tps. Next hit we will know. You got this brother.

[@PCgonerogue820]

Yes, I'm special, another video 🤣😂😅 Thank You Miss.Jackie and Chief

[@RickSolis1026]

The most B E A UTIFUL MACHINE IVE EVER SEEN. ( Jim Carrey voice ) you attention to detail and ruthlessness on the street or track is one of the reasons I stay loyal to Midwest Streetcars. Keep moving forward my brother!!.

[@johnkhicks6581]

Fat footed it he said

[@danieldzurisin595]

Makes complete sense to me. Props for shutting it down and checking it over, as well as getting us a video pronto time.

[@mattthemorningafter]

I think your theory is 💯 correct. Thanks for the update and giving us all the content lately

[@jalopywrench]

Exactly what I thought. You shut it down at WOT. That's why the plugs looked fat. Just exhaust pop. We used to do that on purpose on the street, bad in the carb days.

[@dimoichi5841]

I have to agree with your assessment, instant power kill will do that. I'm guilty of the exact same thing every so often. Usually happens when I'm hyper focused on other things instead of my head being 100% focused on my normal procedure. Much love and respect always brother 🙏

[@charlesfulks6511]

I thank you are so right I remember when I was a kid my brother would do that he would switch the ignition off and it would pop like it was going to blow mufflers off

[@JarrettGunter-n3z]

Was never broken and is begging to get back out there! Went through the motions without even thinking, it happens on rare occasions.

[@rayrussell6064]

I'm all about data and I do agree but could just to make sure nothing is hurt could you run a comp test, cylinder leak down, and use a bore scope just to make sure you haven't damaged anything these are test that I would perform on customer cars just to make sure either no repair is needed or I'm repairing the right thing. Thanks for getting back to us about the data.

[@sendit2873]

damn look at the lift on the cam that rocker looks to push that valve a mile got to love the pontiac looks like it just loaded and popped the non burnt fuel and I think your spot on man

[@waynejenkins1038]

I agree Chief. You charged the motor with fuel and bang in the exhaust pipes.

[@DavidTerrill-tc2js]

I think you are right , the extra fuel hit the hot exhaust and went pop !

[@lukewalker1051]

Need to take a lick, check the 60 foot time versus back half trap speed and check with the butler.

[@oikkuoek]

Makes perfect sense. Although I would try to figure out where those sparks came from.. Are the headers still sealed, is the hot side fins still in working condition.. It shot sparks, so there is metal missing from somewhere. Next time you put it on 2-step, it can shoot the whole spinner out from the exhaust. That thing can easily go through someone's head.

[@bernardweldon6110]

I think you’re correct in your assessment. I believe that when you shut off the ignition, the fuel was still being dumped into the combustion chamber and since you shut the ignition so the fuel detonated in your exhaust because the pipes where hot enough to ignite the unused fuel instead🤔 IMHO, the engine will be fine. But check you pipes at the weld to make sure they didn’t crack from the pressure. I don’t know, but I am interested in finding out what happened. Love the channel you two🙏🤟

[@johnjohannemann1220]

I really enjoyed listening to your description of what you believe happened. Based on the information you supplied, I would have to agree. Fuel can really be volatile even when you don’t want it to be.

[@mr68Charger383]

Sounds and looks like a rational explanation. Nothing broke so be happy and rock on. Car looks awesome.

[@chadriddle3517]

I swear chief has got to be one of if not the most intelligent street racers ever! I started watching season 1 again recently and lots folks relied on big chief back then for knowledge. Justin you will always be my favorite on or off the show .

[@jeffgraham48]

I had a set of smart coils that would fire after ignition cut off mine would pop. First thing I thought when I heard yours pop.

[@mickwhelan6938]

Your onto it I think same happens with our mini bobcat at work when throttle is open and ignition is shut off goes bang everytime scares shit out of me everytime also love your vids keep em coming

[@SirWilliamHorne]

Dang chief that is one beautiful ride! You’re absolutely correct, kind of like back in the day and we would turn the key off while driving to make the car back fire!

[@robertrusso2122]

You know but you can check your injector pulse width, obviously as you spoke about all other parameters that you mentioned but couldnt read because the system was shut down. You need to find out how to continue to keep the system on and be able to read your data. Black box, fuel and ignition cut off only. I always like to see what is going on at all times. Good cid thanks.

[@Reignin1]

🙋‍♂️... I think your theory is correct Sir. It make scents that whatever unspent fuel injected after the ignition was cut has been ignited by the high heat of the exhaust pipes.

[@stevenbelue5496]

I would think at that high an rpm, from one revolution till the next would be milliseconds and if ign was cut between those revolutions, between two exhaust valve opening events and I envision the first exhaust valve opening event that ignited in the cylinder, that theres still fire or fuel burning as that exhaust charge exits past the valve and enters the pipe so the next exhaust opening event that had ign cut and didnt fire, as soon as that exhaust valve opens its igniting right then and considering valve overlap some of that pressure wave is going back into the intake tract. Maybe not enough for a burst panel or maybe the lobe seperation on a turbo cam helps prevent that somewhat. But seems like with a lot of overlap that could cause some damage.

[@Hogiewan1]

I have a 12 second at best 2nd gen Camaro small block NA and I still struggle sometimes so I can’t imagine. My hats off to you guys!

[@eddiearchuleta615]

Man a true street car!!!! Gotta love the crow! Best street car on the planet hands down bro

[@austinhedge8147]

I've got a 6.4 hemi in the srt8 jeep, just had the timing chain break on me. The engines now In my living room to rebuild. I don't know much about hemis and I respect working with what you have but do you think the 6.4 hemi is a good platform to build?

[@richardsnyder3719]

If your on batch fire then you will have fuel in the runner tell the valve opens. Your on point

[@deanhardesty7528]

It sounds right.Back in the 50s people would put spark plugs in their exhaust pipes and run wires to a switch with 12 volt to the switch.Drive down the road turn the ignition and pump the gas pedal then hit the switch to the plugs.You would hear a bang and flames would come out of the exhaust.The same idea.

[@TurboJohnRacing]

That spark plug access is great! Glad it ain’t hurt!

[@kalebhall2925]

I have done that before, when my car was out of shape at the big end, instincts went into shut down procedure so I threw the chute and killed the power with the WOT switch still feeding the 52N jets in the fogger....nipped a couple plugs but pistons stayed alive. At least for that round..

[@justinshearer3016]

52 jet in the fogger is a full grown man jet...nice!!

[@kalebhall2925]

The rings only last about 40-45 passes before the pan vac says they need help, but hey, I like to party!

[@dustinlanphear422]

In my opinion about this is that the fuel didn't fully combust in the engine and went through the exhaust valves and caused it to pop like that in the hot exhaust when you shut her down

[@whereisamerica7384]

Totally agree that's what happened. Chief did you look at turbo speed sensors? Just curious what it did when it backfired.

[@martywilsonwilsonenginesho7940]

I have been to your shop and was at your merch shop when you rolled in in Wanda. You had been across the street a convenience store. My son and I sure wanted to get your shirts signed, and you did wave to us, but the gate shut so we didn't bother you. We both build cars but mine are just street but fast street. 💪👍 We just live up in Kansas and tune ourselves and are just about the only ones that don't send off a log and get a new file back! Thanks for the videos Justin. ✌️ Marty (aka Pops)

[@pruthvirajghongde115]

Big chief, I watch your race video, I hear sound in loud noise in my headphone and I think that you were right that you did not leave throttle and turn ignition off

[@POKIN4FUN]

I agree ignited access fuel in the exhaust

[@audiophilecole2994]

Is it possible the bang was completely on the hot side external of the engine. Did you look at the turbos for damage?

[@JerrellKull]

You are absolutely correct Sir. Very well explained. Y'all take care.

[@64CHEVYTWO248]

HI I THINK YOU ARE VERY RIGHT !!! THE FUEL HAD TO GO SOMEWHERE ?? AND YES YOU ENGINE IS STILL TURNING OVER AT YOUR RPM'S WITH THE ENGINE DON'T STOP ON A DIME . PS YOU WILL GET THERE . TODD FROM MICHIGAN .

[@d3et1roi3t]

Id agree with ya. Do you have an electric Throttle Body? If u flip the switch will it close ur TB? with all the fuel still dumping into the intake inside the engine.

[@walthansmann]

That was an excellent analysis, Chief. The data logger seems to show it. You need to have a discussion with the driver to have him get his stuff together in the shutdown! 🙂

[@djk91lx28]

Makes complete sense Chief.

[@patrickreyes796]

I really Love The Crow Big Chief. And i really Miss seeing you and Jackie and everyone racing. And i really wish they would bring back all of you on TV again or you show all of so you racing on videos that would be awesome