Three years later and this video is the gift that keeps on giving. What an excellent presentation. Thank you!

Ok I'm just baffled and annoyed that someone would dislike this guys videos!! He is very much the same kind of guy that taught me all the knowledge I have and I very much enjoy these tutorials. People pay tuition to learn far less than Davin can teach you in minutes.

I have become addicted to redline rebuild videos Maybe more so than watching breaking bad. I think the first clue of my Addiction was when I reschedule a quarter end results staff meeting to watch the Buick nailhead update video number 4

@beetee801

4 жыл бұрын

Im glad you have your priorities in order. 👍

@CLVannoy

3 жыл бұрын

Keep living your dreams

Another success of a video! and even when the diagnostic was not good I'm glad it happened so we can enjoy more of your videos!!! Thanks a lot for taking the time! They are clear, very well produced and with an excellent crew!!!

Thank you for taking the time to really explain what you are testing and why. Seeing the process as a whole really helps me know how to approach my own engine issue diagnosis.

Genius! Thanks a million for making the walkthrough. It’s makes so much easier because I have a 442 and had no clue how to diagnose the issue.

When doing a leakage test I've always just balanced that particular cylinder on TDC so you don't have to worry about the engine swinging around and valves opening on you. Start off with #1 top dead and work your way through the firing order. Can use something long and thin like a welding rod or a long screwdriver through the plug hole to feel when the piston stops. 👍

Thanks! That is the best, most straight-forward explanation of these tests I have seen.

Yaaaa we I'll be watching new rebuild. This is the perfect way to diagnos engine. Thank you for the class.

All the dislikes are from people who work at the machine shop that built this Camaro's engine.

Enjoy all your Redline videos and especially this one. Learned a lot. Keep them coming!!

Keep these videos coming! I love this professional step by step methology to solving problems. Out of curiosity what would you recon a service like this would cost the owner? Keep up the good work! All the best from Denmark

It’s always a pleasure to see you doing your thing thank you for the information brother

These videos are so good, love em, please post more!

Love the content! Can't wait for the next video about this engine! Greetings from Holland!

That’s some of the most educational engine diagnostics I’ve seen. Mind you I can turn the wrench but don’t know why. Kind of a lego piece rebuilder if you will. Learning the why is fascinating. Thanks!

Bought an 1978 GMC 3/4 ton pick up big block454 at very low price with all plugs fouling. Did compression tests all good enough. Intake manifold looked wet, so cleaned, tanked and then magna fluxed. Filings showed crack running from side to side right under the carb intake. It was sucking oil up through crank case. Installed new intake manifold and no more fouling. I used and abused the truck for years and sold it to a friend and still running strong with no fouling. Workhorse gust gas hog averaged 12.5 mpg.

More already! Awesome! Nice job! Love the video like always!

The King of diagnostic👍🏻

My Honda magna was burning oil and this video saved my ass. Thanks guys!

Thanks to you, this ol' geeser here learned something new today ! Kudos !

You guys are putting together some great videos! Keep it up!

I love watching your videos. Thank you!

This is a great series....more!

Great explanation - thanks for doing this.

It’s crazy that you guys put out these videos for free.

Thank you, i had a problem recently with my 4.6 grand marquis. I coudnt figure out where the oil was consuming. It didnt had no leaks. Thank you so much

Thank you for these great videos.

Nice video! Tomorrow my rebuilt muncie M21 4 speed gearbox is going in my '72 Camaro and I will start my 396 again! So looking forward to driving her again. And more videos from you. All the best from Norway.

@trillrifaxegrindor4411

5 жыл бұрын

best of luck,you are a very lucky guy.check and recheck everything you can and make sure to setup your clutch,pressure plate etc right.(im sure you will)_

@mortenvanvik7082

5 жыл бұрын

@@trillrifaxegrindor4411 Thank you! Yes I'm lucky and, yes, I will check and recheck. This is my hobby so no rush. All the best to you!

Ahhh you are the best Greetings from Greece !!! 🇬🇷🇺🇸

@kurioskabourhs2089

5 жыл бұрын

πσσστ κιαλος ελληνας εδω

@dimitrisv7068

5 жыл бұрын

Δωνεεε !! Παντού είμαστε

@bruhmomentum1994

5 жыл бұрын

Παμε ρε

@User_76ytrl

3 жыл бұрын

Hello my friend nice Video Καλησπέρα πατριώτες 👍 🇬🇷

Great job. Cheers guys

My favorite channel on KZread!!!

Excellent explanation! Thank you. Very helpful.

My diagnoses is, stuck oil control ring on cylinder 3 for sure, and sticky oil ring on the rest, from short runs and lack of oil changes.The oil looked nasty when it was drained. It will be interesting to see, when you get it apart, what the true problem is. Great video!

Excellent walkthrough.

well that says it all , Time for a rebuild ! .. Sure had hope on the valve seals being the problem .. ENJOYED

If the rings are bad, try check the dipstick after/while the engine running. Piston rings should seal oil & combustion chamber in two way, if the rings broke exhaust gas will pass through the ring and you can find exhaust gases from dipstick.

Learned some new stuff and love the image quality of the video!

@Hagerty

5 жыл бұрын

Thank you for watching! More to come.

Thanks. I greatly appreciate it.A good video and explanations

Dropping knowledge one video at a time. 👌

@Hagerty

5 жыл бұрын

Many more to come!

Great tutorial sir!

well explained thank you!

Very informative video! Sad though for an engine that was rebuilt only a few years ago, but to be expected I suppose since apparently everyone & their brother are allowed to drive the SS like they stole it without repercussions. Well, like you said, we'll get to see the 396 rebuilt again!

Great content. Thanks!

Awesome video. Thanks

Great content! Loving this series, but if you ever get back to traveling & working on other people's cars, my garage door is open!

Wonderful tools man !

Very good information thanks for your hard working..... I appreciate that....... Greetings from Syria.....

Beautiful!!!

From looking at the other plugs, the ones covered with ash, I'd say the motor is running hot consistently (wrong octane fuel or low quality fuel). The ash could also be from a small bit of oil leakage into a hotter cylinder. Not all oil burning shows up as an oil foul symptom like the plug he is working on. Great vid. I'd like to find out in a future video what the ash deposits are from for sure.

Davin's the real deal. I'm glad he's in a good place (plus, free to help us understand some serious engine stuff) and not in some cheap twisted shop with cheap and twisted people.

great video thanks.

love watching these. theraputic somehow..

Engines out ! Looking forward to the rebuild , the 396 is my favorite engine .

Please do more videos like this. I wouldn’t mind a half an hour video😝

Great video. I learned so much. Of how to do it the right way. Something else that can cause this exact problem is a intake manifold gasket failure between the oil passage and the air intake runner

@daviddntait

5 жыл бұрын

Yup I fixed that issue a couple times on later model 5.7, 5.0, and 4.3 Chevy engines.

@CanadaBud23

5 жыл бұрын

Could be, unfortunately you'd have to take the manifold off to find out lol. Ya never know, we'll find out when he tears that bish apart!

Great video!

@Hagerty

5 жыл бұрын

Thanks for watching!

Thank you.

I didnt movt watching this video, very good job, i have the same issue whit my passat, drinks 1 liter of oil at 2000 km, will try to find out here someone who could do compression an leakdown tests, thank you for this info

I was taught if you step on the throttle and get blue smoke its rings. If you back off the throttle and get blue smoke it's valves.

nice 🙋🏻‍♂️💛

Great instructional video. Question; How do you correctly determine the compression ratio? I know how to figure cylinder and compression chamber volumes but not how to determine dished pistons and piston clearance to the top ring. Thanks

Make sure the throttle is open when doing the compression test for best results. Great videos

@compt3ck

5 жыл бұрын

I was mentioning it mainly for people doing it for the first time themselves.

Hey don't forget that oil can get into cylinders from bad valve guides and worn valve stems also.

Really good video. It makes clear what really causes high oil consumption (...the rings and not a leak somewhere). If I buy a used car, is there a reliable way to detect if the car has already a high oil consumption (like 1 litre pro 1000 miles) ? Does the compression test also work if there is a lot of carbon built up on the oil control rings ?

Very informative video! Can you expand on what causes the white color on spark plugs? I have an oil consumption problem and have been trying to track it down, after putting new spark plugs in very recently and pulling them to do compression and leak down tests I noticed that all 4 plugs(dodge 2.4L turbo) have a white residue on the ground electrode. Any pointers to send me in the right direction would be greatly appreciated. Cheers!

Curious on new ring choice.

i wonder if the valve stem seals could have blowby and can it be heard when leakdown testing?? also what do mean when you talk about the white crust on the sparkplug reffering to leaky stem seals? Thanks! Cheerz!

Very informative, learned a lot! Still don't really get what causes the valve stem seals to leak, could somebody explain?

If you add oil through the plug hole and the engine is on an angle, that oil will sit on the low side of the block. How's the oil going to get over to the other side on the intake side? I love watching others wrench cause I wrench too. Keep the videos coming guys.

@brand-x7049

5 жыл бұрын

Oil will wick into the space between the piston and cylinder around the rings, and as soon as the motor is spun, it will spread and seal.

Lol at 12:47.... the dreaded deep breath in to proceed with what you know is coming....

Thanks for more info. Question for you, as to what product and how much you think I should use. I have a 1995 Subaru 1.8L 4-CYL boxer Impreza, 177,000 miles. I have 76 and 78 PSI dry compression in #2 and 4 of one head (driver side). This started a few days ago, we noticed while on a highway trip the power was weak and I can hear it missing as the RPMs drop from driving to idle. I don't have overheating, excessive oil consumption (drippy seals, I add a quart about every 900 miles), smoking, or fluids cross contamination. I'm waiting to have a leak down and another dry/wet compression test at a different shop. The first shop only did dry compression and wasn't too bright or helpful. If I end up having a head gasket leak between those two cylinders, what products would I possibly try to mend it? It must not be too bad of a leak, whatever it is, for the compression to build to 78psi dry. The other two good cylinders are 130ish psi. If it ends up being a valve leak, what products and strength could I try to get them clean? After cleaning, I will have valve clearances checked, as it's probably never been done. Thanks again.

Hello there, thanks for sharing and Merry Christmas! Is the oil on the thread of the spark plugs and indication of damage? If you see the thread of nearly all of them are too oily. Cheers...

Great video thanks! Question; when performing the leak down test does it matter where the piston is in relation to TDC?

@johnmilner7603

5 жыл бұрын

No, as long as you loosen the rocker arms so the valves can close. I like to tap the spring retainer to seal the valves in case of carbon build up. But if you don't want to loosen the rocker arms then you need the piston of that cyl at TDC on compression stroke so both valves are closed.

Damn I'm only 14 and i actually learnt something, thanks

@marcryvon

5 жыл бұрын

There's no age to learn something new, Adi. I'm 66, mechanichely inclined and do most of my cars, mower and snow equipment myself. I heard about Leak Down testing but never knew how it's done. Now, thanks to Davin (?), I know how and why. If you want to learn even more, look for "Mustie 1" on YT. This nice man is a VW Beetles and busses nut. He buys at garage sales or find on roadsides all kind of small engined equipment or bikes, fix them on the cheap and sell stuff on Craigslist. Amazing mechanic and great teacher at that. Check him out !

What about oil from the pcv or a bad intake seal?

Chalky white ash deposits is usually fuel additives or oil burning. Looks like #3 was so bad it oil fouled. Time to rebuild and make some big block power.

I have a 305 boat engine with all 180 and 1 cylinder with 150 what do you think about that? Spark plugs look the same, boat sitting for years and did not start it yet since it needs new manifolds. Thank you

Hi , you should have hocked your battery to a Battery Charger while Cranking the Engine to avoid Discharging the battery , right ?

HAGERTY, why didn't you put the cylinder in TDC top deal center when doing the cylinder leak down test? you just removed the intake valve and exhaust value for only cylinder#3?

Sometimes oil can get in the intake port from the bottom of the intake manifold.

@fila1445

3 жыл бұрын

But that still means you have blowby at rings and oil gets to intake by PCV hose

Showing how to troubleshoot it right. It sucks that it's the piston rings. Valve seals would have been much less of a costly pain in the butt to deal with. Although while you've got it apart I suspect that the heads will get a service too.

The WHITE on the spark plugs is made by water vapor from the PVC system.....the ring blow-by contains the water vapor....a by-product of previously burned fuel being reintroduced back into the combustion chamber instead of going out the exhaust the first time around

@johnmilner7603

5 жыл бұрын

Dave Anderson that's why I made a catch can.

With it that bad, I'd imagine you have an oil sample sent out to see fuel dilution, an intake leak on the underside of the intake will do this almost exactly as you've described

@ellieprice3396

3 жыл бұрын

A head gasket leak can also cause one or two cylinders to check low, but fouled plugs in this case indicates this is not the problem.

is the test also for motorbikes? My bike uses too much oil

Hi guys, do you'll work on trucks cuz am having the very same problem on my 8DC9 V8 engine

What's a good indicator I have a rear main leak?

Why don’t you run the first gauge up to 100 PSI so that you can subtract the second gauge and get the exact percentage of leak down? Why do you stop at 90 PSI? Great video by the way. Most of the videos on KZread about how to perform this test are ridiculously wrong

Where are you guys in MI? I’m from Sault ON so I’m more of a Michigan boy than anything else.

Wow.

they could make a video showing all the tools and equipment that they have?

That engine seems to have worn out prematurely. Who screwed up and what was it?

@isaakwelch3451

5 жыл бұрын

He did say it had a lot of heavy use. Who knows how many miles it has or how diligent they were with oil changes

Welcome We want to write a link to purchase the scan tool Thank you

good

@randythomas4549

5 жыл бұрын

VERY GOOD VIDEO, BARBADOS WATCHING

@Hagerty

5 жыл бұрын

Randy - Thanks for watching!

The leak numbers on #3 are better than #5 because of the oil you squirted in them.

@HaythamBuKhadra

5 жыл бұрын

Also can't wait for the timelapse video.

@Hagerty

5 жыл бұрын

Good point! Conclusion is the same, but yes, you are correct.

@johnmilner7603

5 жыл бұрын

I didn't see him add oil to #3 cyl.

@brand-x7049

5 жыл бұрын

@@johnmilner7603 Looks like it got edited out for brevity after he wet-tested the one on the passenger side.

@brand-x7049

5 жыл бұрын

@@Hagerty Simple fact is that they're both leaking down, and the others probably would too, if they were checked - you generally don't bake just two cylinders... :)

My engine only shakes after warming up. Can someone tell me what it might be? I know there are some smart people here. The vehicle barley moves when pressing the gas, smoke or steam coming out of the exhaust pipe, etc. The water pump went bad and I replaced it. I think I had a blown head gasket. I used gasket sealer and the smoke reduced almost completely but when I first turn the vehicle on a puff of smoke comes out. No check engine light. The temperature guage does not go up enough when my scan tool shows a much higher temperature. The engine is knocking. When I remove the upstream oxygen sensors I hear something like clunking or air quickly releasing from the exhaust valve when it shouldn't, on the side that shakes the most. Thank you.

Leaking rings..no problem, just pop that motor out and how about a valve job while you're at it..! So, how well did the engine run anyway...?

I have a question because it has always interested me, you can do a leak test, in a healthy motor so you can see how a healthy moter behaves there.

@Oscarphone

5 жыл бұрын

Sure.

@themechanik5980

5 жыл бұрын

Steve Prestek I mean I learned mechanic but I never did a test on a healthy / new engine. That’s was nice.

Could this qualify under PI 1802 code? Lmk please ASAP. Thank you

Scored cylinder walls also a possibility?