Mitsubishi Pajero - how much blowby is normal?? 4M41 Diesel
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- Опубликовано: 26 сен 2024
- EDIT: • NEW Pajero - how much ... shows the blowby on a relatively new engine (20,000km)
Do you own a Gen 4 (2006-) Mitsubishi Pajero / Shogun / Montero with a 3.2L Diesel engine (engine code 4M41)? If so this video is for YOU!!
I came across • ANOTHER ENGINE ALL BUT... recently which describes a chain of events starting with leaking injector washers on a Toyota Prado and ultimately leading to the destruction of the engine.
It got me thinking about my Pajero, so in this video we see how much crankcase blowby my 230,000km Pajero's got. How much blowby does your Pajero have, particularly if it's still pretty new??'
Make sure you check out Fourby4Diesel's RUclips channel - / @fourby4diesel
Mate this is completely fine. Don't stress, do your routine service and she's good for a million kilometres
Cheers mate!
I've had 5 different diesel 4x4s over the past 15 years (I get bored easily 😅) with a few other cars thrown in the mix too, my understanding and what I believe is a good rule of thumb, is if the cap dances but stays in the filler, you're ok, if it won't stay and is getting blown off the filler, you have some blow by that needs addressing. Blow by on a diesel is very normal, especially those with a EGR, I believe a pro for this blow by is that it aids in the spraying of oil to the top end of the engine, which helps prevent sticky valves and valve rocker wear. It does mean that more regular oil and filter changes are a pretty important aspect, and a good catch can doesn't go astray either.
Thanks, yep I've installed a catch can since this video. Seems like it's nothing to be worried about.
Mine is doing some oil vapours out of oil cap filling but from oil gauge check their is no smoke and oil coming out
Hey mate I got the 4m41 engine in my mitsubishi triton
It has got 23000km on it My looks like It has just about the same blow by I wouldn't be worried
The only thing that these engines Struggle with Is excessive carbon build up..
Putting the catch can on was a great idea.
My Advice Would be
regularly Get Timing chain Inspected at Every 150000km or Replace it and Regularly Check Valve clearances as the Manufacturer recommends
From my experience you keep up with the maintenance as the manufacturer recommends These engines will last very long time We nearly had 500000 km. On our old mitsubishi Was still running well before we sold it
Thanks mate, good to have the extra confirmation. Those are good tips; I've had the clearances adjusted a couple of times and the timing chain guide was replaced probably 100,000kms ago, but I'll get them looked at next service.
Just checked by 2017 NX 4M41 and it looks almost identical to yours. Rattles around a bit but doesn't jump out of the filler hole. A little puff if removed but not excessive. Drives perfect as always
Cool thanks!
Looks pretty normal to me. My 4N14 Mitsubishi 2.2l diesel rattles the filler cap as much as that, but has less visible smokey gas than yours, and I’ve only done 102,000km. They can be smokey up top. I fitted a Mann Hummel ProVent 200 to filter out the oil from the positive crankcase ventilation so that the oil vapour isn’t simply dumped back through the intake. That way the inlet manifold won’t get gummed up. I highly recommend doing this. The provent uses a fibre filter medium to catch the oil and drop it down to the ball valve which you empty yourself every so often. I extend the life of my filter media by removing it (it’s just a simple cartridge) and using paper towels wrapped around it to squeegee out the oil, then I refit it. It doesn’t need to clean the oil like an engine oil filter, the media just needs to be good enough to absorb oil from the vapour so that it drops down. I get a few years use out of one filter media cartridge.
Thanks Ronan, that's helpful. Yes I've bought a Provent catch can and just recently installed it, so will be posting a video on the results I get from that in a few months. Thanks for the tips on extending filter life! Stay tuned!
Yeh mate i have a 4m41 triton. Blow by is the same as that, they look way worse than what it really is because the timing chain is right below the oil cap, meaning it flings oil, oil vapors and air our pretty fast. To see how much reall blow by it has. Take of the Crankcase ventilation tube and feel how much comes out the rocker cover.
Thanks for the tip Max, I'll give that a shot!
A diesel would bearly start if the ring were worn they need higher compression. Mine is like all of every body here as soon as the key twists chick broom instantly fires if your car does this it can not be worn at all.
I agree on that . Especially with engine that are design with the oil cap up front . This will cause much more pressure than the usually. I’ve notice that if you have a blow by issue that’s really bad . The engine will stall when the cap is removed .
I live in Alice Springs where every week a D4D comes in with cracked pistons. The diesel mechanics say they never get that with the Pajero.
Yep I've heard that exactly too mate, I've spoken to my Pajero mechanic about whether I need to proactively change my seals and he said he's never had that issue with a Pajero. I don't know why since they use similar or the fake injectors but that seems to be the effect.
Pajero 2009 220k does same and still drives like new and goes everywhere 👌🍻
Cheers mate! I'm at 270000 now and it's still going strong!
What a nice video, 3 years later and its great to watch and learn. I am going to test mine which has more than 220k on the odometer
Great! Please post back and let us all know what you find!
I know this is a late comment, but I would have to say that this is not blow by causing the cap to rattle around but the crankcase pulse due to the pistons moving up an down, which is normal. I would assess blow by checking it at the the tappet cover outlet that connects to the intake, this will give you a better indication of blow by. I have 2016 nx from new with 120k and my son has a 2012 with 250k and both are the same.
No worries thanks Craig, all input welcome!
Hey Greg i was in the same situation as you not that long ago, I've got the 2013 with 145000 ks, I've got the same situation and started to worry, about 2 hrs after i checked mine my brother pulled up beside me in his 2020 Pajero with less than 5000ks on it....exactly the same as yours and mine mate...only he had some puffs of smoke as well.
Cheers
Hi Peter thanks for that feedback, that's great to hear! I actually had a friend with a 2020 model with about 20,000km on the clock which I tested a few days later (I will post it when I get a chance). His had fumes as well but didn't shake around as much, I guess it's more balanced! Your comments just confirm it's all OK. So I think we're both in the clear!
Cheers!
Greg
@@TheMusingGreg totally normal you dont have a lot there keep changing oil regularly you should easy get alot moor miles from that engine 👍
@@mattlawton4715 Cheers mate!
@@TheMusingGreg your welcome another thing if a diesel engine starts kwick and easy there is no chance the piston rings have worn nor does it burn oil. Mine has 178000 miles and does the identical thing as yours. These engines are very good.
Looks very similar to my 2015 Pajero 3.2 with only 67k ks on it. I don’t think there’s any issue with that.
Great thanks mate!
U am so relieved right now...............just saw that on mine today, nearly shit my pants.
Glad it's put your mind at rest mate!
Well you got my curiosity up so I fired up my Thai built 2009 Pajero Sport 3.2 GT with 191K rounds, no tow and "lady owned" rounds. Now the motor was fairly cool as I drove it 6 hours ago today, but the PCV load was significantly less. Also, I'm no expert on all the motor evolution internationally, but I think the 2006 3.2 may still run the Rexel fuel pump instead of the Denso system. Regardless, yours probably runs Denso injectors similar to mine and the ill-fated Toyota 1GD D4D you mentioned. It sounds like you have found the Fourby4diesel RUclips channel, I treat Anthony's educational videos as sage advice and apply this knowledge to my Mitsi 3.2 DID. Many things apply such as the "long type" SCV mod, and the 7mm restrictor plate. One major difference is the timing chain in ours which should be replace at 200K or so, and you can not neglect valve adjustments, see viddy in link, has subtitles. ruclips.net/video/UuRmFdRW-gU/видео.html
Thanks for the info Andrew! I'm not sure what type of injectors I have but if they are indeed the same then it's likely the same problem could happen. I had my timing chain tensioner replaced recently when the tappets were done but I've not heard of the chain itself needing replacing, at least not on the 2012 model.
@@TheMusingGreg I see now you have a 2012 model, somehow I got it in my head that you had a 06. So, yes, you have similar if not identical Denso pump, common rail, and injectors set up as in the Prado viddy and as most all newer Japanese light truck diesels. It was interesting when I converted to the problem free "long" SCV, my search led me to ordering an Isuzu part. Fourby4diesel channel has extensive advise on maintaining these injector systems.
My Pajero 2011 NT with 250000km is doing the same, now after reading the comments, I am not worried anymore,
Cheers that's good to hear!
Perfectly normal mate
Cheers mate!
The Rocker are moving and valve are moving will cause some sort of crank case pressure . The oil pressure will certainly do that . As long as you don’t smoke coming out of the crankcase that smell like diesel fuel you should be good .
Thanks!
I know the video you speak of. I’ll have to check and write back. Keep in mind our pajeros require periodic valve clearance adjustment so leaking injector seals would be obvious (if blowing soot) at that inspection/adjustment. Not sure if the Toyota needs that valve adjustment hence less opportunity for that inspection to catch such issues.
Cheers as always Mike. I had my tappets done a few months ago by a Perth Pajero specialist, so I hope he would have let me know if anything needed doing. I took a photo before they put the rocker cover back on and it looks very clean, nothing like the Prado engine was in part 4, but from this photo I can't specifically where the injectors come out of the head to see if there's any build up.
@@TheMusingGreg me too actually. I went to see Drago. Was super impressed with the service and the fact we sent me videos of what he was doing, it’s condition and progress.
Haha well deduced that I went to Drago! :D Yeah they did a great job, am very pleased I went there as things like the timing chain tensioner were easy fixes while it was apart and I wouldn't have thought of it. Agreed re photos SMS'd to me along the way about what they found, gives you confidence they're making good decisions. There was one little mistake I discovered a few weeks later which should have thrown an engine light, which they offered to fix up and provide a discount on future work. But it wasn't a big issue in my mind.
I have a 2007 NS. All I can tell you is that blow by is normal. Mine on the other hand am having to change the engine because I had the issue of a leaking injector pump seal leading to oil and diesel mix. When that happens you will surely know. As it will get to your pistons money causing a loud clanking noise and tonnes of smoke. At that point the only remedy is to empty your oil (which is purely diesel) from the sump and put fresh oil. The vehicle is drivable for about 50-70ks.
Thanks mate, sorry to hear about your NS though! Any symptoms we need to look out for as signs of an impending leaking injector pump?
My oil cap does a cute dance too
Haha thanks! 😂
I’ve got 2019 model , 35,000km , has provent 200 and tuned , it’s doing about the same as yours with puffs of smoke. I was a bit worried about mine tbh , after reading some comments here I think mines ok .
Yep I reckon we're both fine thankfully!
Mine is a 2007 allegedly with 220k km... It has a worse blowby. Few weeks ago when I cleaned the inlet manifold I measured the compression too. It is under the specs which will explain the blowby...
I also changed the oil seals and still looks good, all clean...
Cool thanks for the input mate. In what way was yours worse - more oil fumes or more pressure in the crankcase? Do you get blue smoke from the exhaust pipe under heavy acceleration which would indicate worn piston rings? Otherwise I would be guessing injector washers (if they exist) or valve stem seals.
@@TheMusingGreg I mean it is worse there is more pressure than in your video. Curiously it doesn't get blue smoke yet.
I wish it was a valve seat or injector washers (there are some copper ones). I did the compression test according to the service manual ( mmc-manuals.ru/manuals/pajero_iv/online/Service_Manual/2008_eu/11/html/M111100260208500ENG.HTM ). For example, cylinder #1 had ~2000kPa way low under the 2500kPa limit, but with a little oil added it rose to about 2800 kPa...
Moreover, cylinder #3 had a much lower pressure (> 300kPa specified)... I was so disappointed I didn't bother to measure the pressure with oil added on every cylinder. In hindsight I should've done it. At the time I was sure that I need to rebuild the engine... Now, not so sure (yet).
It works okish, doesn't consume oil (I don't need to refill between service intervals). I will keep it running until the rebuild will become a must :)
@@crispusb Hmm... Why are you so sure the low compression is due to worn rings?
If it doesn't blow blue smoke (burnt oil) under load then it's less likely to be the rings, which means you're likely to be looking at top-end issues. I'm from a petrol background, but at the top end I am pretty sure all you've got going into the combustion chamber is valves and the injector. Failed valve stem seals wouldn't affect crankcase pressure as the other side of the valves is in the inlet manifold, which just leaves the injectors. If the injector seals were starting to leak , you'd have 1) lower compression, 2) extra pressure in the crankcase and 3) no tailpipe smoke - which is exactly what you're describing. So I'm wondering why you don't think it's the injectors?
If you read the comments here from Andrew Cattenburg he suggests my 2012 model would have the same Denso injectors as the Prado in the video I linked to. Your 2007 may be different and may not have those copper washers; but either way there has to be something doing the sealing from the combustion side of the injector to the crankcase, and whatever it is if it's failing it would describe your symptoms exactly.
Musing,
Greg
@@TheMusingGreg Disclaimer: I'm no mechanic, just a guy who tries to repair his car.
From the service manual: (btw I fixed the above link)
9.If there is a cylinder with compression or a compression difference that is outside the limit, pour a small amount of engine oil through the glow plug hole, and repeat the operations in steps 7 and 8.
(1) If the compression increases after oil is added, the cause of the malfunction is a worn or damaged piston ring and/or cylinder inner surface.
(2) If the compression does not rise after oil is added, the cause is a burnt or defective valve seat, or pressure is leaking from the gasket.
I am in the case (1), after I poured the oil into the cylinder the pressure increased to about the nominal pressure (2800 kPa). I suppose that the poured oil "seals" the rings and I get full compression... Also, if were to be a top-end issue, also I presume that the pressure wouldn't increased...
@@crispusb Gotcha. Must be rings in your case then. Yes the added oil would help create a better seal around the slightly worn rings.
Something you might like to try for restoring your engine compression is 'Engine Restore'. Project Farm has two great videos on his channel on this - ruclips.net/video/Hr8jIwVyIFE/видео.html and a 12 month follow-up ruclips.net/video/VXIu3oo8z4c/видео.html. If it works, it'll be a heck of a lot cheaper than a full rebuild even if you have to add it in at each service!
Good luck!
Greg
All normal mine has 420k on the clock and no difference from the one's you video. She always gets serviced at 10k every time and no issues yet.
Cheers thanks! Mine's at 310,000 now and is unchanged
Normal, my 4n15 dose the same while it’s injectors are outside the engine cover
Cheers!
That is definitely normal to me unless the oil cap blows away then you have to think twice or excessive smoke coming out.
Cheers thanks Immanuel!
Just for further General Info, My Nw 2012 gets about 100ml in the after market Catch Can per 10,000klm, with a wired EGR block. (At 158,000km now) I thought the result of the quantity of oil, in a QUALITY catch can with cotton, would be a fair assessment. Looked after properly these units see 400,000klms.
Thanks Jamie. Yep I'm getting a similar amount, a bit less perhaps but that's probably because the drain tap on my Western Filters Provent kit leaks!
@@TheMusingGreg Good to know its around the same amount. Thanks Greg for your reply.
I have NX which I bought about 115K. Then and now (186K) it has simillar blowby like yours. I wouldn't worry... unless we are both in trouble.
Cool that's comforting - I think! At least if that's what it was at 115 it's a good sign. Do you get a similar amount of smoke when your engine's warm?
Thanks for the input mate, really appreciated!
@@TheMusingGreg here: cph4.noip.pl/owncloud/index.php/s/TmgQEfstSi2Cb6R you have morning cold start. Not sure if seen but there is bit pressure on cap. I don't see vapours though. However, when it's hot then you definitely can see vapours.
Nah, that's normal for one of them. Toyota D4D does it in 2.0 aswell - avensis etc; exactly the same as your video. Upgraded injector seal washers are silver. Pre repair, slow engine oil pressure build up shows on the OP light. Removing filler cap doesn't so much show heavy breathing as it does a sharp tick sound - as mine did, but then only one injector was really blowing.
Thanks Jon!
How’s your Pajero now? Mine has got 230 on it and looks like that. Can’t do the normal filler cap test because the cap has 2 slots that hold it in place, preventing it from getting blown off, cheers.
Mine's at 310 now and still about the same. Mine has two slots too but I just undo it and let it sit over the oil filler hole to do the test.
I wouldn't be able to give you a clear answer. Try removing the dipstick, and if oil doesn't spit out from there, you should be fine, even if there is smoke coming out (bottom pressure).
However, I have a friend who's got a 2008 Toyota 2kd, and there's nothing coming out from the dipstick, no bottom pressure.
Thanks for the tip! Do you know how many kms your friend's 2KD's done?
I have 2008 pajero sport 2 with 4m41. at 230k km, there was the same situation and increased vibration at idle when the engine was warmed up, there was no smoke and vibration on a cold engine. When the engine was opened, there was a crack in the fourth piston+a broken first compression ring and bullies in the cylinder (((
as it turned out, this stupid motor is not boring into the repair size. there are no original repair pistons. only analogues of teikin +05, but when boring, the nikasil coating disappears from the cylinders and the engine loses its resource. as a result, I had to buy a contract short block. Sorry for my terrible english
Sorry to hear that, that sounds like a very annoying situation! Glad you got the problem sorted out though.
This is quite normal I tested many 3.2 DID Pajero even under 100.000 Km and they do the same 😉
Simply because I was wondering as you if my Pajero 3.2 DID engine is still in good condition or not😅
Thanks, I think we're both in good condition!
My 05np rattles the cap off. And in the last 100,000km I've replaced the cap twice as it does seem to weep out of the cap.
Sounds like it needs a valve clearance adjustment
Valve clearance was done a couple of months earlier. It's probably just sounding ticky because the oil cap was off.
Better get injectors serviced done ✅
I think this much is pretty normal. Why do you suggest an injector service?
Mine one is very silent sitting at 198000 kms. Not sure why😏
Perhaps tappets?
I have pajero v80, at 2009. 150k and It does the same.
Great thanks!
Normal
Thanks!
Why you delete my comment?
Hi Swan, mate I didn't delete it but I don't know what has happened. I got a notification to say you'd left a comment that started off with: "Sorry for my English language this week left deposit for Shogun 14 number plate 47000mil and this pressure blowing does not leave me alone i just hold the cap shi is blowing same like ...". But the comment isn't showing on the video for some reason. Maybe RUclips blocked it automatically or something, I don't know, but please post it again as I'd be interested to hear what you have to say.
Think thats normal my ns with 243000 does the same
Great thanks for your input Francois! I guess that puts both of our minds at rest!
yeap that blowby is normal son
Thanks mate!
My has 300km and is d same
Great thanks Stuart!
Remove the occ,
occ..? What's that?
How about the oil consumption of this car? Mine is 2014 Kia Sorento 2.2 turbo CRDI, it has exactly the same amount of pressure as yours does and it spills a few droplets of oil when dipstick is removed. Unfortunately, it is consuming around 2 L of oil per 3000 mile. I am gonna take it to sevice center for compression test when the next oil change due. Would love to have any suggestion.
That sounds a lot of oil! I assume there are no obvious oil leaks under the car? Does it blow blue smoke under acceleration? If so, rings could be worn, or an oil seal in the turbo.
@@TheMusingGreg Yes. But no external leaks, no blue smoke, no power loss. Probably turbo or bad rings, I guess. How much does your car consume oil? Could you please answer so that I can make a rough comparison.
@@FletcherEldridge I've never measured my Pajero exactly but my feel is that if I didn't top up the oil it would be down to the Low mark on the dipstick a bit before the next service. So that would be about one litre in 10,000-15,000km. Different vehicle though to yours. The oil has to be going somewhere, if it's getting burnt there should be blue smoke. Maybe get someone to drive behind you while you accelerate and see if they can spot any blue smoke. Or just take it to a mechanic to diagnose.
My dose the same 2015 model 90000 miles
Thanks mate, good to know!
It looks like normal engine vibration to me, you can not diagnose blowby with that simple test, is not accurate
Thanks.