Oil In The Exhaust? What Causes It and How To Troubleshoot It. 

Good use of the smoke machine, we see lots of slobber issues when drivers idle for long periods in the cold. Use to see lots of broken rocker arms too, on the acerts when it gets cold out (-30c) or colder drivers would say they were getting great boost, 60 psi or more then POP! there goes an intake rocker. good video thanks.

I always thought turbos use centrifugal force to (seal) them throwing the oil outwards towards the drain Turbos will never seal

That oil return line can be really problematic, since the return tube/sealing surface really doesn't want to stay flush with the turbo side and it's so tempting to just tighten up the bolts to make it seal. Wondering what could be done better than just using rtv sealant on oil return to seal the gap and not over tightening the bolts ?

Good content thanks Josh!

Great video ! No bullcrap just straight to the point !! Thank you

You have never heard any noise as loud as a broken rocker arm. Customer driver the poor truck in, as we heard it approach all of us mechanics looked around in a panic.

For you Cummins ISB guys. A restricted air filter or crank case filter can cause the turbo impeler seals to leak. For you Hino guys, a leaky turbo is normal. Hope I saved someone a couple grand!

you missed one cause that iv seen before, crank case filter plugged up, will cause hight crank case pressure and push oil through your turbo seals leading you to believe you have bad turbos

So when this happens would there be oil in the manifold when you take the turbo off?

Wonderful. Thank you for the info

I enjoyed and learned at the same time. I mean WOW ....... thanks for the video sir.... please keep spreading the knowledge.... gbu

thanks man I was freaking out but I think it was oil somehow getting into exhaust! Great video

Smoke machine...Great for disco night too

Dude on these cats it's just a blowby tube coming from the valve cover yall worked on one Detroit and think your experts now

So what direction would you go in this scenario? White smoke that really burns the eyes. Lots of blow by coming out of oil fill cap. Iv tried turning individual injectors off to see if smoke stops but it stays the same with all cylinders. I did find a little bit of oil in the intake turning on the turbo and the rest of the intake piping. No misfires

For one it's a yellow big piece of crap is why. Got love them cats that just fall apart when manitance is neglected.

Make sure to do a taste test first!

Would the presence of oil in the exhaust side of turbo be enough to tell you seal is bad ?

Loved the format sir! Continuity is for some readon overlooked in a lot of these types of videos +1 sub!

I had a tarrington 929 with a three port over boost file while injecting ether throughout the manifold pressure transducer reactionary force motivator. I used a bogden 929 with a 3/8 in adapter torqued down to 96 newtonians with a half hitch packing plate coupled to the exterior phalange tube and the problem was solved.

I have a tractor (JD 4020), that has a oily residue coming from the exhaust manifold where it goes into the stack. I have concluded that it is more than likely caused by the engine (apparently designed to not use valve seals at all). If you don't heat the engine to a good temperature, or if it is not worked hard enough it will not fully burn the diesel, and it collects in the exhaust.

🇦🇺. Thanks for sharing always very interesting

More to know thank you.

As always a fantastic video Josh. Thankyou.👍

This is caused by idling to long, especially on a cat.

Hi i am vicky u have purchased Lux algo premium version tell me please sir

Hi i am vicky u have purchased Lux algo premium version tell me please sir

Hi I have a caterpillar 3406-DL and the serial number is 4CK03404 and it doesn’t have the sticker where it has the information for the motor and I want to know what the fuel timer for this engine is you can help me in any way please write me back

My 98 mod 3126 is spitting out a bunch of oil on the exhaust side of the turbo. I changed out the turbo only to find that same problem. There’s a tapping sound that comes and goes. Very sad

Love the channel being a cat tech myself its nice to see different ways of doing things to make the job easier. The smoke machine is a great idea and will be ordering one soon. Keep up the good work.

Exactly the video I was looking for, thanks!

Good video as usual . I love the destruction part . On the turbo break , any ideas on the cause ? My only guess would be mechanic error . Even then I'm not sure what could have caused it .

Awesome video, thanks for sharing.

THANKS

I rather have a old turd 7.3 idi than that piece of shit engine

I got oil coming out from my headers what can cause that

Another great video Josh. Thanks.

No blow by bunch of oil no miss, oil out of port 6.

I have a Isuzu NPR HD and it's very hard to turn over has plenty of power to the starter even turning over the engine itself with the wrench it's almost impossible but with the starter it a turnover maybe 90° each time it does It was leaking a lot of oil internally curious what you guys may think it is it's a diesel

What is end play tolerance for ... 86 3406? Engine smokes, blue / white when cold, nice & black when working, H2O at temp. 210F. / 225F. ? I am learning so many, keep up good work.

I'm looking at a Mazda CX7 2.3L Turbo - it has blowby, or what appears to be blowby out of the oil filler, yet when I check the oil dipstick hole, there is non... what is going on here? The turbo has pools of oil under it... Never seen a case like it!

Hello sir. I have Cat 3306 Mep-007b generator, i am teardown the engine now i reassamble the engine but i have one problem The crank have no marks in a timings. Please help

you are great man engineer

This is l exactly what I have on a C4.4. Engine would also runaway when it ramps up. Did cylinder cutout none of them are dead . After running away when you pull piping on the tubing side it’s dry. Ran the engine for 1 minute and it was a puddle of oil. Pulled CCV filter it does look dirty but I’ve seen worse . Pulled air filter it’s not too bad . Will replace the turbo and retest.

Hey y'all, I have diesel fuel coming out the exhaust ports. I have no issues driving. It actually starts up no problem (cold or hot), drives really well, has great power and very smooth operation. The only issue is that the 2 of the exhaust ports are wet with fuel when I shut off the truck. I thought it was oil, but my oil level doesn't dip. I replaced the thermostat and serviced the cooling system to make sure the operating temps were up to spec. Any suggestions? Bad injector? Cylinder problems? Wet-stacking?

Good job 👌👍. Keep up the useful content 😎. I hope that new born is not beating your sleeping hours too much.😝

I just found a turbo on a c15 that the exhaust side was dry of oil.. but it fails the smoke test. Engine was consuming oil. Going to replace this turbo and hope the blow by shows less vapor and froth.

I have a 05 t600 kenworth with a C15 accert with the same problem..pushing oil thru intake manifold ..we put new turbo on it ,repair the engine twice with new head and it still pushing oil thru intake manifold..cant find the problem yet..

grate vid

Oil is going into the cooler and into the intake. The oil is coming from the turbo, I already check the return line and it’s not clog. It’s a 1994 international school bus, any idea, thank you.

On my 05 pt cruiser. When i start it a huge cloud of smoke comes out. I mean huge. But it doesn't do it always. Only after my car has been sitting for at least 90 min. What do u think problem is. The shift seal on the turbo?

I'm having this problem with my Volkswagen 1.9 tdi how do you clean out the oil from exhuast system after replacing turbo.

I need help. 2006 Jeep Liberty CRD Diesel: I was pulling 4k pounds for about 500 miles and the last 80 miles was a solid gradual up hill. I noticed it wasn't going into over drive about 20 miles before the big problem started. We heard a pop. Not a super loud pop but a pop any way. Noticed there was zero oil but was idling fine, just no power at all. It would move a foot and stop so I quickly shut her down. Sent a friend down 6 hours from home to pick it up. He poured a gallon of oil in it and it all ran out. He said a lot of oil was coming out of the exhaust. It doesn't overheat or smell like burnt antifreeze. Also there was no check engine light on but the oil light did come on a little and I added some oil but the oil light went off and never came back on. Did I blow my motor or am I lucky enough that this could be just the turbo or something even cheaper? I can't afford this right now. =(

Thank you.

Damn keep it simple, start with checking with air filter. Cats haven’t made highway engines for a decade, give them something new to learn with Vgt turbos and how egr works. For the average person you should not see a leak from your exhaust manifold weather it’s soot or oil. Talk about miss fire, I just had to remove a Mercedes mbe 4000 cause the unit pump oil dripper broke and the unit pump roller destroyed the cam. Cam comes out from the rear.

Hi there vw 2.0. 2013 turbo fail. I replace. I put 5 litter oil. After 2 hour all Oil come out from the exhaust. I’m not sure why turbo men rebuild

Thanks for the video sir. I enjoyed and learning at the same time. New subscriber here sir.more videos please... Cummins engine😊

So if I have oil leaking at the closest piston to the radiator at the exhaust manifold...that is most likely piston/ring damage? Love your videos BTW.

Maaan you saved me some stress.... Oil exhaust blow back and blowing smoke like a train. New turbo and replacing oil lines... Hopefully will fix the issue. Very helpful video 👍🏻

Hi, I have a question: My 2008 F-350 super duty 6.4L my turbo low oil comes out in the exhaust pipes and a thick white bush comes out of the rear pipe. My Higth turbo is new and the injectors. with you solutions.

I have a ism that recently got overhauled.... it doesn’t have blowby now and runs good but still has high crank case pressure... pushes dip stick out and makes a oily mess... shop told me to tie dip stick tube down????? I’m thinking something else is wrong either leaking exhaust into crank case or boost... new turbo is 3k and they say can’t be rebuilt... any suggestions? And if I do tie dip stick tube down am I going to cause any damage... couldnbit be Jake brake ? No white smoke and no oily turbo everything is dry.. I’m kind of at a loss here any suggestions appreciated

Check exhaust and stuff while it’s running? Bold of you to assume it starts

I've had Nissan ZL 30 - 3 LT diesel engine with new turbo , new oil intercooler , new radiator , new injectors put in correctly by very reputable mechanics . Oil still coming out exhaust like spitting droplets . All items above had to be replaced . Engine has been pressure tested , no leaks of any kind and no pressure drop . Could the oil in exhaust be left over residual in the exhaust outlet and exhaust pipe from the blown malfunction of the old turbo . It has sloppy main shaft and was very wet on the exhaust side when it was removed . Is there a way to clear the oil out completely without having to replace the entire exhaust system . The original problem was first black exhaust smoke then very white and motor ran like a gutless low powered "sewing machine " . Anyone with any info please let me know , greatly appreciated . Many thanks in advance . Cheers . Great video Josh and very informative. Best regards from western Australia. PS my vehicle is back at mechanics getting checked over . Waiting for their diagnosis.

If you see blue smoke it’s oil. If it’s white smoke it’s coolent.

Hi Josh I have Cummins isx and coolent getting low every 50miles I had to add one gallon coolent, when I went shop mechanic told me you have two problems 1) EGR cooler and gasket pls Advise me Thank you

Hi!i have a problem with a ford focus mk2 1.8 tdci 145 hp,after the engine heats up when i m accelerating i can hear the turbo whistling and losing power ,it also has oil leaks under the turbo,do you have any idea what could be?

the question is what caused that turbo to fail, what if something else caused this blow of the seal? you install a new turbo and weeks later poof same issue?

Hey I need some advice I got a 3406e model cat it had a oil leak where the transmission in the engine meet at the bottom passenger side the garage that I had to fix it told me that they were going to have to pull the tranny to fix the leak they put a new clutch in it they put a bearing in it as they took it apart they found these things wrong the truck also had to have a radiator and a coolant for the turbocharger replace I got the truck back I had a lot of black smoke coming out my stack Chuck-E-Cheese in La Jolla feels like it's loss of power I'm taking the truck back into him several times seeming to not tend to what I'm asking them to do and I'm kind of worried what should I do

Why don't you just hook up a hose to the turbo, blow cigarette smoke through the hose to the turbo?

Nice informative video. The smoke machine, can it be adapted for use on a gas vehicle emission system?

hi i got 2006 pete 387 with c13 engine antifreeze cames between exhaust manifold and turbo going thrue inside turbo all the way to under exhaust pipe and i got smoke cames on top exhaust i changed \precooler but it didnt work any idea please let me know thanks

Thanks you sir I'm a HGV driver from pakistan here are we don't have sometime machinics

I have fuel leaking from turbo , could this be because i have tu bad injectors?

I have a c12 with low boost and found that the linkage inside turbo is disconnected from waste gate . Is that something I can fix without tearing my turbo apart?

If your engine exhaust is smoking is it always related to damage or could it just be as simple as an oil change and oil filter change

On mine the blowby hose was kinked and the pressure pushed oil to the turbo and the exhaust, do I need to change my turbo?

My ford fiesta diesel has been leaking a bit of oil in the turbo for 4 years now. Ford said it’s normal. One time i had to change the intercooler and it was filled with oil

Hey I got a 95 3406e it blows white smoke when It first starts up and runs rough. Was told could be injectors o rings and do an overhead any possibility that could be my issue?

What if it has blowby?

I have a car the oil is pissing out of the turbo into the cat do I need a new turbo or is my engine gone

In DG exhaust fire is coming what would be the issue sir

what if the white smoke comes and exhaust manifold is leaking very thin liquid?

If I dont have a smoke machine to identify if the turbo is bad,how else can I find out the turbo is bad?

Great info.....👍👍👍

Hi What is the cause of high and low sound generator engine speeds C15

HELLO I HAVE MOTOR VOLVO TAD 1641 GE. ITS LEAKING IN MONIFOLD EXHAUT. AND WHEN I PUT MORE HUILE THE SMOKE CHANGED TO WHITE. CAN U GIVE EXPLIN ABOUT IT ?

What do you mean blow by? I didn’t get that part

What do you think of a BorgWarner turbo on a tuned 650hp 3406e

i had oil driping out of the middle of exhaust manifold and i noticed some steam coming out of blow tube the motor had 40000 miles on complete rebuild but sat for years trucks is not on the road so the only thing i could do is just idle it too get the temp up seems too might of helped but not sure the last person to drive it was my cousin and hopefully he didnt abuse it too cause anything ps the exhaust blows clear though

Your videos are very informative. Thank you for sharing them

Mine its turbo very lightly wet but not barely see same bout the exhaustbout of block. But when its cold runs ok. When engine get hotter it starts and higher rpm boutv15000rpm very roughly and blue smoke. Should be egr or pistons

Do you have a model number or more info on that smoke machine tks

I just experienced excessive white smoke and oil leakage on my Cummins N14 exhaust pipe, this video helped a lot, thank you. Unfortunately in Fiji they don't keep N14 parts...

We had a oil seal fail on a 6v53t and it ranaway on us, luckily with 2 strokes is that is doesn't need the turbo because it has a roots blower. Sit runs since we removed the problem

dear sir thanks for teaching & idvaice i have cat wheel Excavator M 318 model 2000 i prepare full engine overhauling now oil coming from Exsiest i cheke engine gage gage is swing 1 coter oil is lis pls idvaice me thank you

smoking it is a good idea!

Good Vid. Posted a msg to you yesterday 11/5, lost power, limited to 1,100 rpm. Checked this am and found a puddle under the eng. Has never leaked a drop. Took some photos and the oil seems to be coming from under the turbo. Took some photos, but don't see how to post them here. Any assistance?

thanks you for video and Wonderful. Thank you for the info thanks you very much...........

Hi I just rebuild the engine but I don't know where the oil goes the engine is not leaking is not smoking only the steam come out from oil tube

I have oil in the intake of the turbine, what could be?