Honda D Series Failed Engine Analysis X2

In this video I dissect 2 D16Y7 Honda engines to find the cause of the failures they had. One engine had a catastrophic failure, a broken connecting rod, the other had a severe overheat condition. In addition to the dissections, I also provide information on vital engine parts and their functions as well as what to look for when they fail.
See the links below for more videos on these engines and the cars they came out of.
I hope you find this information useful!
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Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy®.

[@brianandrews7099]

If spilling coolant and oil on the garage floor is art, then my garage is really just a studio!

[@troywee4774]

always good when you can take a look inside, i love the 'lets see what happened' videos! cheers.

[@MODeration_nXS]

My first civic was a y7. Since then I've had a d16y8 with 270,000 miles that ran great and currently drive a 95 civic with a d15b7. I've always loved the underappreciated single cams.

[@Mister006]

The greatest thing ever to be made into a battery-powered tool is the impact wrench. I don't know how to explain just how much I love mine!

[@AKAtheA]

it makes noise...lots of noise ;-)

[@Ayeobe]

I use my Makita DTW1002 a ton when i'm not near a shop, or air.. but it weighs 3x more than my Ingersol Rand.. so air hose be damned, it weighs less than the battery lol

[@JasonTylerRicci]

I own a D16y8 and never knew about the oiling system and that gurdle. Thanks for showing us!

[@austinhamann704]

The D-series is surprisingly rugged, I rebuilt mine at 150k to upgrade springs/retainers before a turbo kit and found 3 slightly bent valves so plucked them from a spare head Engine ran great with 3 bent valves and rod bearings losing material, and even better after the rebuild lol

[@7eamGhast]

I’m so glad you modify old school Honda’s, I learn so much from you man!

[@nimaforoughi7266]

I guess these are old school now...

[@7eamGhast]

@@nimaforoughi7266 I was thinking about getting a Texas Classics plate for my civic.

[@nimaforoughi7266]

@@7eamGhast Hard to know... Imo, these cars are pretty basic transportation. What else do they do than moving things? I say that as an owner of an '84 Civic. It looks funny, rides funny, but is reliable. I'll do the preventative and the general maintenance. I wish I could throw parts at it when something needs changing, but spares are getting scarce. However, Eg and newer Civics can still be dailied. Unless it has the potential to be a low milage garage-queen, have fun with it.

[@7eamGhast]

@@nimaforoughi7266 Mainly bought it to work on with my sons, gotta show them the old way of using your hands and having a hobby other than Xbox. Just got one of them an old IS300, we’ve been enjoying modding that together so far also, it’s automatic but we got the civic in manual. It’s a 99 so right around the era of mods and street racing scene got awesome. Cheers 🍻

[@xabysebastian529]

So much knowledge. Never knew that you could patch up a warped head with just a new gasket and right torque specs

[@teardowndan5364]

8:30 The spring in the pump isn't there to 'create' pressure, it is there to provide pressure relief (pressure limit) so the pump does not self-destruct from hydro-locking or blow something elsewhere when the oil isn't flowing out fast enough through the pump output otherwise, such as on cold-start where oil viscosity is much higher and most clearances are tighter.

[@ancientapparition1638]

theres a trick to increase the pressure using shims on the pressure relief spring so one can point at that and go 'it controls pressure' but yeah youre technically correct

[@Asian_Connection]

Can you tell me what the problem is with the following symptoms: slow coolant lose, engine have light back fire when accelerating, misfiring, not overheating, no oil in coolant reserve tank, it's a 2002 4runner with 190k? Interested in buying it to work on.

[@ancientapparition1638]

@@Asian_Connection what do the spark plugs look like

[@190SkyTeam]

@@Asian_Connection a slow coolant leak could be bad head gasket coolant seeping into the cylinders, water pump may be leaking, heater core maybe leaking or its hoses. Or radiator hoses Maybe

[@stephendee7839]

With engine #1, I originally thought that the rod let go from overreving, but after seeing the crank, I figure the rod big end welded up to the crank and then bent the rod during the stroke and then caused the rod end weld to fail.

[@ericthecarguy]

Yes, it was a lot of heat created by a lack of lubrication. Likely hot enough to not only weld the connecting rod to the crank, but also enough to soften the metal in the connecting rod causing it to fail.

[@stephendee7839]

@@ericthecarguy Great point about softening the rod. That would have taken any heat treatment annealing out of the steel as well.

[@brandonsimunac]

"The little piston that couldn't quite!" hahaha

[@desertkun]

Good chuckle

[@thehemiolds455]

Yeah 😆 it looks like a came out of a Briggs and Stratton engine🤣

[@Rein_Ciarfella]

challenger srt I was thinking the same thing!

[@thehemiolds455]

👍

[@paulv1498]

Ugh, you made me realize what I’m in for at some point as far as the oil pump goes, I have a 00’ Civic EX w/ 260k and I’m about to have to replace the original clutch and rear main seal while I’m in there; I’m already hating this job and when the oil pump goes, life will suck! But I still love working on my Honda’s after working on them the last 17 years.

[@gusgiesel]

The whole engine assembled with 14mm (12?) bolts lol. That is some serious damage but I have to applaud Honda for building such a stout bottom end and oiling system. Manufacturers cannot protect against abuse or neglect like this. Thanks for another good and fun video. I like your spirit and enthusiasm :D

[@patrickzambori473]

my 1989 civic hatch "standard" developed a brutal overheating issue after getting rear ended... It had *no* coolant leaks. I removed the thermostat and checked the water pump impeller in case it had fallen off or worn the impeller away. I was able to drive slow on backroads with the fans running but as soon as I got on the highway - super hot. I nursed it 300 miles home and tore it apart and found nothing inside to explain it. Turns out the guts of the muffler broke in the accident and restricted the exhaust, then the cat melted and restricted it further. It already had a quarter million miles on it so I swapped in a low mile JDM and header system and was good to go.

[@aserta]

I pretty much keep the whole engine, but then again, i do play with casting, so it's useful to me. Especially if it's an aluminium block, very useful. Edit: to other people who take engines or want to take engines apart, i have this trick/tip. I got one of those shallow sand playgrounds in the corner of my shop, only added one of those lake bottom membrane plastics on the bottom and put fine sand on top and clay powder. This serves as my take apart pit, and it saves so much hassle with cleanup. Highly recommended.

[@bluecar5556]

Another idea is to clean the outside of the engine with degreaser and hot water before working on it. The sand is an abrasive and I would want to keep the parts clean to prevent damage.

[@timothykeith1367]

How do you cut up the block for the foundry?

[@aaronw8732]

Boy, that key for the crank pulley looks identical to a key for a flathead Briggs crank, which are pretty commonly available at any small engine shop.

[@bradnoyes7955]

Ah yes, a conversation piece, like the one hanging on the wall of my garage. "Where'd you get the narly curved connecting rod?!?" -My Uncle People don't check their oil anymore (I assume they used to), I check my oil every time I fuel up, and people give me weird looks, one even said "you must be a mechanic". No, but I know how to take care of my vehicles. People are always surprised to hear my daily driver has 225k miles on it and looks a good as it does, its all about taking care of things, proper maintenance is key.

[@davidg5704]

Yeah I agree, people often ask everything alright when you pop the hood like to them it's the only time they pop the hood.🤣

[@stihltech206]

I love failure analysis!

[@edterryberry255]

I'm a new subscriber because of this video. I'm sharing it with my son as a cautionary tale on the importance of proper lubrication on his first car! Also, I own the almost identical car as your son's (a 2000 model) very helpful video. Thanks Brother.

[@BigEvy]

Having done service on a near identical model of the second engine , it’s a nice feeling recognizing little quirks and shapes specific to them.

[@labradormcgraw]

I really must invest in one of those Milwaukee impacts - it sure made light work of that crankshaft bolt. Gotta love a proper ETCG nuts-n-bolts video - best on KZbin.

[@ericthecarguy]

Expensive, but worth it. Especially when you consider you don't need an air compressor or hose to connect it. Happy Halloween!

[@labradormcgraw]

@@ericthecarguy Thank you. And a very happy Halloween to you too.

[@Azlehria]

@@ericthecarguy That's something I keep pointing out to people: air tools are really only cheaper than cordless _if you already have an air supply._ If you need a compressor (or a bigger compressor) to power the tools, electric is a _lot_ cheaper. Also, good luck helping a buddy at (their) home or on the side of the road with air tools!

[@technoJoe23]

Incredibly funny and usefully informative, you're everything I want in a KZbinr. Thanks!

[@GickelsGaming]

7:24 "Let me play a song of my people" - Eric

[@NZbmxer0]

Hey Eric neat video. I did a head gasket on a civic a generation older than the cars these engines came out of. I needed up sending the head to the machine shop to get resurfaced and used a composite gasket and it’s held up well since and it’s been over a year. These little d series are a robust 4 cylinder that if treated well drive really well!

[@Rein_Ciarfella]

Cool! Thanks for that look and evaluation. I still have the burned exhaust valve I replaced in the ‘66 MGB I drove in 1969. Made a great paperweight on my desk for years.

[@Simon-ui6db]

Love these type of videos.

[@droidaimone]

Cool vid. Having an overheat issue on the same civic and also am watering my car. I found the leak just waiting on hose and coolant fan switch as the fan is good but not coming on til nearly overheated. I hope that will fully restore my cooling system after its burped of course. Thanks for your vods man they have saved me serious money.

[@nimsu]

Had a 95 hatch d series in college. Previous owner ran it dry twice. Still put 160k on it with no issues other than some oil consumption before ditching it. Wish I still had it now to rebuild for fun.

[@southernautodiy2643]

Mannnnn that's gnarly! Those rod bearings in that first motor you opened chewed that crankshaft rod journal up!

[@musskeeterbump]

I will be doing this type of inspection and analysis on the original K20a3 that came in my Civic Si Hatchback , I have the manufacturers factory service manual on hand and will try follow the manufacturers procedures for overhauling this engine and also borrow some knowledge from these awesome videos.

[@spacecat7247]

Yep, always save all the leftover goodies from dead motors. And other components. You'll use them later. Metric can be hard to come by. Save em. Cool vid. Thanks Eric!

[@stanislavponomar2588]

Very cool video. I appreciate the oil pump part. Explains what shimming them does for increasing oil pressure.

[@joshalvarez298]

As a new car guy this was so cool!

[@audikris]

Nice!!! I'd never use rags to soak up oil on the floor, because they need to go somewhere, and oil dry can just go ... out. But LOVE the teardowns@!!

[@ericthecarguy]

I used old rags, not new ones.

[@FREEM1ND]

I'm using synthetic blend high mileage on my 1999 Accord V6. The ol girl just hit 230k and I go 5000 miles (+/- 100 miles or so) between changes. Still running strong, thank goodness.

[@ericthecarguy]

Probably will forever if you keep that up. Thanks for the comment.

[@FREEM1ND]

@@ericthecarguy You know it! I'll only drive Honda from here on out. Ol girl is due for valve covers and sway bar links next. Thanks, Eric!

[@vijayantgovender2045]

Thank you Eric I enjoy watching your educational video and entertainment I am from South Africa

[@ericthecarguy]

Hello South Africa! Thank you.

[@TheRegistrant]

My 98 lasted 286,000 when I sold it, never fixed the spraying oil pan gasket leak but it’s still on the road. Cant go wrong

[@Glenn_123]

Excellent video as always Eric! Really enjoyed this teardown!

[@kalanajasenthuliyana]

I know how bad it is to loose that key. Fun video to watch. Learnt a lot as well. I'm a Honda fanatic and I enjoy these a lot.

[@pospc2]

I use a blue "scratch free" Scotch brite pad and bake clean and plastic blades to clean aluminum heads and blocksthe guy at the machine shop complements my prep and how I don't leave scratches or low spots like he often sees. It's time consuming to use a scratch free pad but it's worth it in the end.

[@ifgezroxy]

I had a Honda D-series in my second car ever. It made to over 500 thousand kilometers, then just in case it was rebuilt with new bearings, rings and everything in the top end. It was around 12 years ago. I sold it to a friend who still drive it to this day. :)

[@ifgezroxy]

We both serviced it ceremoniously. So no more than 10 thousand kilometers with oil, everytime I changed gearbox oil as well.

[@davidmccleary5540]

I thoroughly enjoyed this video. Always wanted to do this

[@hooty454]

Would be cool to see a video about combining the two bad engines and making one good/okayish running engine.

[@ericthecarguy]

Not worth the effort in my view. I'd rather not eat food out of the trash. Also, I have other plans. Thanks for the comment.

[@hooty454]

@@ericthecarguy No problem and totally get what you are saying. Also, thanks for the videos! Have been watching your videos for years and got into working on cars because of it. A few years ago I didn't know anything about cars and now I just did an engine swap on a 06 Silverado with a 6.6 Diesel.

[@josephreisinger33]

I have a 2000 CRV and I can't wait to open it up after it overheated 2 years ago. I know, I should have opened it up right after it happened but went out and got a 2019 HRV 4 the wifey. Tanks for the info Eirc. Take care and ⌚ your 6.....

[@outspokeninsider752]

I've rebuilt 2 overheated b20's. Unless the head is too warped to resurface they usually go back together fine. If nothing catastropic happened a head gasket, new head bolts and a straight edge might do ya.

[@ericthecarguy]

I hope it wasn't just air in the cooling system. www.ericthecarguy.com/what-to-do-when-your-engine-overheats/

[@thinman8621]

Good analysis on cylinder heads. Aluminum heads do hate being overheated.

[@RayleighCriterion]

If you've got an oil leak and you're refilling with fresh oil, only then can you extend oil changes. 😋 My last two engines needed two quarts of oil between changes, mostly due to the PCV sucking too much oil.

[@kingcarcas1349]

volvo?

[@RayleighCriterion]

@@kingcarcas1349 Chevrolet V6 & I4

[@yambo59]

Points off for the Fram filter--lol That crank will polish right out-!

[@Azlehria]

As bad as Fram can be, a new orange filter is still better than a "good" filter with 10k miles on it.

[@craigcreal908]

"But we're making art" words to live by etcg

[@ryulee458]

This video was definitely entertaining Eric and educational LOL

[@aswallace88]

"But we're making art" LOL

[@tcpnetworks]

I had a 'forceful expulsion' of my number 4 on my C22SEL GM engine. It tore the crank apart, blew out of the block. The head was perfect :)

[@pirihern9329]

Always good to know. Great video. I'm always learning. Paz y much health

[@danielc4053]

Grazie per il video, sei un vero professioniasta.Ti seguo da Milano, ciao!

[@silversolb18]

my 99 civic has 315k on the original d16y8 and automatic transmission. It did have a headmaster issue a few years ago i did deck the head and good as new. Last year I put rod and main bearings fir peace of mind! I always check the oil weekly and change oil every 3500 miles

[@Patrick94GSR]

My Integra GSR had a head gasket failure at 330K miles. I stripped the head and took it to a shop, where the highly experienced machinist pointed out a couple of nicks in the cylinder head sealing surface between cylinders 3 and 4. Not sure how they got there. They surfaced the head, cleaned it up and replaced all the valve seals. I put it back together with a new OEM MLS head gasket. That was 7 years ago, and it now has 373,000 miles.

[@bottom4strings333]

Great video! Very informative. Thank you, Eric!

[@remodz6385]

Morning! Look forward to this one!

[@bigdaddymak1439]

Definitely agree no wizzy wheel on aluminum! Auto transmission guys say scotch brite is your friend. Great videos

[@Gold63Beast]

3:40 that has to be the fastest I’ve ever seen a crankshaft bolt come out! Damnnnnn

[@bcredeur97]

Having the right tool definitely helps. I too had to get a heavy socket and a big electric impact for a D17 lol

[@ruinunes8251]

Completely agree. Having powerful tools always help.

[@yafois988]

What you need is “SHEET” type of material like a polyurethane one you can put under things to be the diaper catch so the concrete doesn’t pay for it.

[@ancientapparition1638]

rubber mat eh?

[@yafois988]

@@ancientapparition1638 rubber absorbs oils too good, need a harder material that repels it .

[@ancientapparition1638]

@@yafois988 oh yeah so youre right itd have to be made out of poly

[@happyputt9709]

Eric loves the D series

[@keitho77]

Eric The Car Guy: Keep ALL the things!!!

[@zues2013]

We’re making art 😂🤣 I’m gong to tell that to my engine repair instructor next class when I spill a bunch of fluids thanks Eric.

[@mubirusyrus802]

Quite good work Mr Eric I've learned a lot.

[@ILikeMetricMusic]

Safe the crank shaft too so you can show people what happens when you don’t do oil changes when it’s suppose to be done. Also great video Eric :)

[@xanderlander8989]

I used to torque valve cover bolts with each oil change. It helped prevent those pesky D-series oil leaks.

[@kingcarcas1349]

Good stuff, for those of us who have had our shop classes closed

[@jimmy21480_midnight_special]

I always learn so much from your videos. Rock on man!

[@justinoliveira1365]

Love the comparison in the heads keep up the great work

[@pedrotheswift5937]

Always enjoy your video's Eric!

[@Supra9772]

NICE BEARD! Catch a D engine by the tow lol. As always great content ! Fine wood dust also works for picking up major 🛢 and is probably cheaper :)

[@ancientapparition1638]

can confirm wood chips work great. once its on the spill i spray some cheapo degreaser on it and sweep away after a bit

[@kristianhermann5971]

Another observation - exhaust valves were black on the 'good' engine and clean on the 'bad' one. Seems to support your theory Eric 👍

[@ericthecarguy]

They were likely black because the computer was trying to richen the mix because of the dead cylinder. Thanks for the comment.

[@danielmoss2394]

Very cool. That’s serious crankshaft carnage.

[@slimjim8736]

this is great in depth work learned a thing or two from this Honda Motor thanks Eric!

[@russellhancock9765]

I am thinking that little Deant might be for during assembly and it probably makes some little peice slide in the right spot.

[@Watchyn_Yarwood]

I was hoping you would do this! Whenever anything breaks, I want to know why. Thanks!

[@rvamotorsports4379]

I can’t tell you how many times that little damn coolant hose has got me. Lol

[@jamesterrill1938]

Honda engines are the best quality of any engines especially the four cyl. Running out oil is unforgiving..

[@darthvalkyr]

RIP crankshaft. I've seen some things in my time grinding them but that has got to be the most punishment without actually cracking and snapping the shaft.

[@isalmankhan1]

Thanks for sharing Eric👍 Loved the trophy😉

[@CrazyPetez]

Great, interesting video, Eric👍.

[@davestewart9146]

Thanks Dr. Eric for your diagnosis lol, great video 👍😁

[@Watchyn_Yarwood]

Regarding saving old parts, I've always thought it was better to have it and not need it than to need it and not have it.

[@volvofreak86]

I use 0W/30 oil in my volvo xc70 diesel, sadly i am well overdue an oil change, but without money and access to a garage without paying for it i'd have to push on it a bit more but i have topped it off and i keep an eye on the level since it pushes out a bit of oil from the crank case venting, i will get it done once i get working again

[@Azlehria]

In situations like that you can go old-school: change _just the filter_ and top up the oil. I believe the XC70 filter is accessible from the top, so you shouldn't need a jack or much oil. Hopefully things have improved for you so this advice isn't necessary, but who knows what the future holds?

[@volvofreak86]

@@Azlehria Not at the moment but i am working on it :) but i think it might depend on the engine too, i got the old 5 cylinder diesel, it might be on top but it could be on the bottom aswell, but i do have a small oil leak and i suspect the PCV valve so i need a top up from time to time

[@Azlehria]

@@volvofreak86 Okay, near as I can tell if you have an XC70 _not_ a V70 XC (2003 and up), you should have a replaceable-element filter. Those are almost always accessed from the top. From the front of the car, with the engine cover removed, look down the near side of the block between the turbo piping and the accessory bracket for a black plastic cap with a large hex head on top. That would be your filter housing. Earlier (V70 XC) models apparently used a _Volkswagen_ engine, which used both replaceable-element and spin-on filters. Good luck if you have one of those; VW seems to go out of their way to be inconsistent and confusing.

[@austinhamann704]

oil channels for cylinder #3 are narrower than the rest on D16 blocks so running them low on oil a lot usually leads to knock/thrown rod on #3 first

[@ericthecarguy]

See the description for the other D series I tore apart. I believe that was also #4. Thanks for the comment.

[@williamglasgow6864]

How in the world were you able to get that first engine to start and run I’ll never know. That’s the most amazing thing. It sure is hard to kill a Honda motor

[@bneyens]

Excellent video once again!

[@kellyrickert73]

Eric, entertaining and educational!

[@WarrenGill]

Thanks for the tour

[@SvcGlobal]

Thank you Eric! Very instructive video as usual.

[@ganeshnarayan5505]

Eric you should do a honda 06 Odyssey tear down like this.

[@kioumarsshahbazi1295]

Excellent job

[@rubenrosales725]

cool vid. got to love eric the car guy

[@starv1nmarv1n88]

Love your vids Eric! But any chance we can get some videos on cars that aren't 20+ years old? 🙏

[@Whateva67]

I have a 92 SI hatch with 462 thousand kms on it sitting in the yard because the compression is so low in hole number 4 that it’s only running on 3 cylinders. I’m gonna pull er apart just to check it out. Looks easy

[@jjott6550]

This is not what I needed to hear on my Sunday right before work😅 RIP to my oil pump I guess

[@timocallaghan4408]

The BRRT of that milwaukee is awesome.. If I got one everything I owned would be disassembled in short order

[@ANautyMoose]

Thanks for reminding me of what will happen to my '09 4cyl accord. At this point oil is considered a prescription and wondering if there's a way to make an oil tank to IV into the engine.

[@davidfrankel9267]

How do you give a thumbs down to this stuff? This is the interesting stuff and not the scotty bs.

[@ericthecarguy]

Haters gonna hate.

[@codymugavero7293]

We're not worthy! We're not worthy! All hail etcg !