Engine Autopsy | Oil Starvation

If you're unfortunate enough to have an engine failure it's important to determine what caused the problem. If you rebuild the engine without figuring out what happened to it your new engine may suffer the same fate! In this new series we're calling "Engine Autopsy" we'll be looking at various engines that come to our shop hurt and try to determine what caused the damage.

LINKS:

[joshacollins]

I really like this series. Breakdowns of breakdowns is what I'm calling it. I am a mechanical nerd so I hope that I am not alone on this. I really want to see more.

[familydotzler]

He's this crazy combo of the easy going friendly guy but he has been going so long in high performance and seen so much stuff. He's a treasure. So much learned wisdom. When he sneezes he forgets more than I've ever known

[kofiasco]

I love this. Just wish parts were zoomed in when talking about them so we can follow closely.

Great series.

[lakkunshine]

If I met this guy I don't think I could keep from calling him smiley. Good videos and sharing a lot of knowledge.

[ryanhorsley]

Excellent and educational. Now I know a little about what to look for should I ever take apart any of my engines.

[justins]

OH MAN that OG civic SI in blue 😍😍😍😍😍😍😍😍😍😍. you just don't see'em much these days and so clean too!

[Thatdavemarsh]

I could listen to the wisdom cascading from this gentlemen all day long.

[TreatsOnTheStreets]

Would be fun to hear an update of the cause of this failure

[cameronmeraz]

I really, really hope this channel keeps putting out such excellent, informative and intently educational videos such as they have been.

This one, in particular I great for it's completeness, thorough explanation of observations and (more than anything) very approachable and presented in digestible manner even for those relatively unlearned in automotive mechanics and engineering.

Wonderful stuff and greatly appreciated.

[Zkt_Zkt]

This is one of my favorite series yet. You've got a knack for this stuff and I've found that's incomparable on YouTube.

[CJEVOLUTION]

I agree with what you mention, it seems to be the oil pump stuck on the lower side of the volume capacity, from my point of view, you have some tell tellers, the most obvious one is that there was oil cooling, so oil was there just not at not enough volume, enough to cool the parts to not get things extra hot to change them to blue or burple color.

[mitchelljohnson]

Dry start damage or super low level, pressure . one thing the crank journals werent floating . Thats the cleanest d.i. head Ive seen in a long time. Great autopsy video .

[craigslistseller]

Jiffy Lube used the incorrect spec ATF in my sister-in-law's car a number years ago. They ended up owning up to it and replacing the trans. When I worked at Infiniti years later, we would have vehicles of customers who service their Infinitis at Jiffy Lube, come in with various issues. It's important to realize that a Jiffy Lube oil changer has nowhere near the same skill level as an Infiniti technician. Beyond substandard oil filters, I wouldn't trust the oil quality each shop uses either. What amazes me is the price for Jiffy Lube oil changes were comparable or even more expensive than our Infiniti dealership!

[malbirrell]

The ford 5cyl diesel in the Australian ranger have a variable volume oil pump. If you allow the engine oil to drain for longer than 15 minutes, the oil pump often doesn't prime when good.
The after market here makes a non variable replacement oil pump.

[TougeReject]

You guys are doing the lord's work with these videos.

[autumnjeserich]

I had my oil cooler lines fail at me when I was at about 275k on LQ4, I was on a interstate mountain pass with no shoulder due to construction for awhile so when I shut it off it locked up. I was convinced my engine my was toast to the point I even panic bought a different engine that wasn't a 6.0 because 6.0 ls aren't cheaply found. But then I decided you know what I'm gonna take a look at it and by putting marvel mystery oil in it for a few days and it then started spinning so I dropped the pan and took out all the mains, none spun all immaculate, the damage crank was toast and rods were toast. But the block survived and I'm really impressed. It appeared that while I did lose oil almost everywhere the mains didn't lose all oil. Even the crank journals on the mains were still shiny. 4/5 were even in tolerance. So I am now rebuilding it. Sure its probably gonna cost me a little bit more to do the build than buy another engine but I think the extra money is worth it since I'm building out a 408 stroker so way more power than buying another stock 6.0. Then its a rebuilt engine with a forged bottom end which I'm sure will last longer than a random LQ4 with unknown miles.

[stansbruv]

Such excellent content. Thank you for creating and sharing this!

[mhk]

Great video Mike!!! Do you own oil changes or go to a reputable place don’t cheap out.

[tedjohnson]

Fascinating forensic analysis! Crazy that someone with a performance engine… got an oil change at a place that uses cheap oil filters.

[student_driver_club]

Please keep doing these. This was such a great video, super educational.