CATCH CANS & EGR explained in detail! Why your diesel’s clogging up & losing power - how to fix it 

How much oil can a catch can catch, if a catch can can catch oil? Up to 98% apparently.

I absolutely love how you guys post the full trips on you youtube channel. I watch the full videos from start to finish even when they are over an hour

Had one in my navara for about a year , im amazed at how well this works my intercooler is bone dry , no oil build up in the intake , great product ☆☆☆☆☆

Very informative video - thank you. I recently fitted a Provent to my Audi SQ5 V6 biTDI after doing a full intake manifold clean. I had to custom make the kit as no one caters for this vehicle despite how many of them are on the road.

The best video I've seen on why to get a catch can

It would be nice if you did a video looking inside a inlet manifold after using a catch can for 100k. just to prove it works!

Finally all those thoughts on egr blanking has been answered. Thank you! I'll be getting a catch can soon.

Hi, i am from Indonesia. I've been using Provent 200 for 2 of my car Fortuner 2016 and Terra 2019. I am very happy with this product. My intercooler is clean. My turbo is clean, even intake is also clean. Great product. It's a must for your all diesel engine.

Best video of catch cans period! Thanks!

Speaking of " *catch cans* " ... time to sit down with a cold one :P Thanks for the vid's lads!

Great video! Finally someone who knows what they are talking about re EGR systems! Well done, thanks 4WD Action. Keep up the great work!

Really good and informative video guys. Would love to see more like this!

Having an EGR is like forcing your car to eat its own shit.

Keep up the good work boys.

Love the videos guys keep it up 🤙

This is 100% my point why Chemical cleans are no good for an engine, all that built up crud gets forced through all the area's you pointed out. Cost more for a mechanical removal and clean but all that crap goes in the bin and not through your engine. Catch can can only do there job if fitted from near new, There great, but for a slightly older rig the mechanical clean must come first then fit the can. Now let the money making chemical cleaning guys unleash and tell me where they recon the crap goes if not through the engine, Thanks for your video Murray in Redcliffe QLD.

really good info learnt a lot thanks dudes

Sold once again, you guys keep on delivery the goods haha built not brought 💪

most important mod is an EGR blanking plate.

I wonder how a variation on the old "Kleinig" water injector from the 1950's would go, perhaps feeding a fine spray of say Kerosine occasionally into the inlet manifold, to "wash" the valves would go?

Great video. Very clear and concise. Thank you.

Excellent explanation, thanks.

Fantastic info guys👍

Great video. Probably the best catch can/filter system and video I have seen. If they ever develop one for the U.S. market and especially the gas engines in the U.S. market they have a potential for a huge market. I will be first in line to get one! I have a gas V-8 engine and haven’t put a catch can on for the very reason you stated. They aren’t very effective but I am at the point where what I can get is better than doing nothing... Like I said the U.S. is a huge untapped potential market. Ron

That was a really good video.

Those were the answers to my questions Thanks a lot

Thanks for the upload. My patrol just out of warranty and I finally convinced myself to block EGR......now I'm confused again....Ha ha. Definately getting a catch can.

Whens the next episode on shauns dirty 30. Good vid on this catch can

Really helpful video!

I AM A HUGE FAN OF 4WD ACTION GREAT VIDEOS THANK YOU GUYS! The Manufactures now build cars like throw away cigarette lighters due to fact most of the engines are no good unless you mod them cough cough, they have DPF fitted creating higher engine temperature due to the restriction in the exhaust an EGR that recirculates all the dirty final emission output especially when they are not closing correctly causing smoke less mpg and higher nox! ohhhh and mr Mann filter man..........an egr recirculates the hot exhaust gas so this make the burn temp higher not lower !! I do like the catch can though its good that the crank case oil is not been allowed to enter the combustion process

Great vid!!

If I install the catch can, do I need to clean up anything in-line of the can. ie; clean out the system of which it protects?

Great video!

It blows me away that what seems to be a simple and relatively cheap fix is not just done by the engineers and vehicle manufacturers as standard.

If this is such a problem why don't manufacturers put this in as standard?.

Love mine, money well spent.

Very informative....intriguing video

thank you detail video

0:47 Lots of blockage and performance loss after just 2,500 kilometers?! Give me a break! Surely if that were the case by the time the vehicle hit 100,000 kilometers it wouldn't run at all, or the owner would have spent $40,000-80,000+ in repairs to fix it.

Interesting vid but also opposite to what my mechanic has told me with the D40. He says egr block is the way to go and I don't need a catch can after that as the oil will burn off properly not mixing with the exaust gas. He also said the opposite with fuel consumption as everyone they have done the egr block on has reported better fuel consumption and performance. Be nice to get some consistent answers

Hi Rainer, I fitted a Provent to my New Pajero, from what I got out of your great video, you recomend not to blank off the EGR and I assume this mean by plate or lectrically using a EGR delete harness,,,, EGR DELETE KIT - MITSUBISH 3.2L ENGINE (PAJERO 2017 ONWARDS) many makes on the market. could you clarify please catch can only recomended or also use EGR delete cable? thanks heaps, great video.

Blanking off EGR, Toyota D4D and turbo going on 400,000kms. Thermal stress? Maybe I should use less right foot. Trouble with the police? Yeah well mote security less freedom. If a catch can fixes this defect, it is a defect, then this should be a class action law suit against manufacturers and a catch can should be standard fitment on diesels

Learn something new every day. Do you guys ship to America? Would I be able to get one of those over here in the states?

No worries with my HJ45 H motor... It could use a catch can to stop it venting out into the environment. Chassis rail likes it apparently!

Great video and very well explained the problem. Do I get trouble if I install this ProVent Germany? Do I need it get checked by TÜV? I’m worried about losing my insurance.

Great vid

When a German engineer says "I have something to tell you" ... you sit up straight and listen!

The explanation of how EGR "saves" your engine by de-stressing it is pretty much a politically correct discourse. Yes it reduces NOx emissions, but NO it doesn't give an engine better economy or longevity. To cruise at a certain speed requires a certain amount of energy from the fuel - if you reduce fuel and O2 by filling half the chamber with inert gas you reduce the power output and hence the vehicle will slow down until you press the accelerator further to add more fuel again. Your economy actually gets worse. I've had a Provent on my Patrol since 5000k from new, and the inlet was already saturated with oil - dripped out of the intercooler when I took it off to wash it out. The Provent is indeed an elite quality catch can/oil separator.

If you already have build in the intake ,does it go away after fitting one of these? Or do you need to have it cleaned out first?

I have a 1994 70 series with a 1KZ-T engine. I guess i don't have to worry aboit this

Whats the best way to clean it without stripping the engine before installing a provent?

I use oil a catch can and a "oil bypass filter"on my diesels.

If all I need is a catch can.... why does the egr valve block up in the first place? when the egr is straight from the exhaust, before any oil vapour comes into contact with the system from your crank case vent??

I wish I had this problem on my 79 series but cannot get them in the states.

So the egr lets less oxygen into my cylinder therefore my engine burns less fuel. Never have I heard someone say you to restrict oxygen and fuel. Wouldn't putting a plastic bag over my intake have the same effect without the extremely hot exhaust gas being reintroduce into my cylinder?

Can I just vent the catch can to atmosphere instead of rerouting it to intake manifold ?

Wow, 10/10!

This doesn’t stop the egr cooler from failing and pumping all ur engine coolant out ur Exhaust or you could replace it every year

What would happen if you did an egr blockoff and installed a catch can?

Hi I have recently had a catch can installed about a month ago all I have had is abit of water come out when I drain it. It's been opened up and has a build up of grease around the rim of the catch can. Do you know if this is a problem for me in the near future? Is it doing its job?

Landcruser 200 series in my country comes without egr from the factory. Do I need to install a catch can in this case?

Just make sure when you take your brand new car in for its regular service that you remove the catch can like i do. I heard from very reputable source (they work for Toyota) that if a catchcan is spotted on the service they void your engine warranty on the spot. So i just remove and give it a clean prior to service. Then after i pickup my Prado its back in place in roughly 20mins

Got a pajero sport, I love it. But recently the DPF service light turns on, and my local mechanic cant fix...please help me~

Thanks for this info but im sorry i just don’t really understand any of it. Seems very important but Pardon my ignorance, i had a new mu-x and i wanna know where i could buy one and have it installed. Does this connect between the air intake and the engine? Just not my forte, but thank you in advance for directing me in the right path..

I had a look at a EGR system with a catch can. It still had plenty of carbon deposits. It may well slow the deposits down as it catches the oil and the soot has less ability to stick to the EGR components and the inlet manifold, but I wonder if the small amount of oil that gets through without a catch can, helps to lubricate any deposits that make their way into the cylinders? Essentially, is the grit post catch can more abrasive as a result of the oil removal?

Is this catch can you're talking about is the same as the oil and water separator? PCV valve?

270,000 km on my common rail diesel, intake is fine, completely standard. Injectors are still running strong too. Don’t always believe the hype, especially when it comes to you from 4wd Action.

And change oil regularly helps 😃

Where do we get the 1-inch to 3/4 hose reducer? Thanks for a great video,.

If some of that residue sludge breaks off and goes into the intake does it just get burned away?

Is this issue only with common rail engines or does it happen with older engines like my td42t??

Egr blanking plate job done

I did an egr delete and have lower egts and gained 30% increase in fuel mileage calculated by the tank increase in fuel mileage = increase in efficiency

If the EGR been deleted/blocked. Will the catch can still work?

Very informative. As blanking off the EGR valve is not a good idea, does that also go for a EGR delete cable such as the Munji brand?

Great explanation, thanks. Does fitting a catch can affect new car warranty in my case 2022, Toyota 79 series V8 ?

Good info. But I'm still waiting for the release of the new dirty 30!!🤙

This is a vert informative video. I have seen on EGR. Was thinking to EGR delete but I will probably install a catch can rather.

Ford 6.7l power stroke has a oil catch can from factory. It has a crankcase pressure sensor in it that fails all the time.

Guys I need some help here. I have a 2015 Mazda Atenza AWD twin turbo 2.2L diesel and I just cleaned my EGR and Manifold. Which of these catch cans will work for me?

Hello, Great video thank you. Do you sell this catch can for the 2002 2.0d4d rav4?

34 years as a heavy plant mechanic all I got to say is the egr and dpf is just a load of political eco bull get rid of it your engine will thank you for it,

good video mate

I am surprised manufacturers don't include oil catch cans!

Can these catch cans be fitted to a 300 tdi defender ??

Is there a kit for the ford transit custom with the 2.0?

If EGR is good for engine then why some people blank it they says that it lesser the engine life whats ur opinion on it....

So your putting burnt oil back through the pistons cycle, so it lowers diesel consumption and pressurises the crank case! Why not just have hho run back through? (because the o2 sensor sensors fuel and supplies the right amount of diesel). Then you can catch 100% of the oil, it would still lower fuel consumption and be 100% better for environment and the engine, and the oil discard process might be higher but a lot easier and the whole system works better all round?? 💁🏼‍♂️ Can an egr sensor be deleted from ecu ? And can it “sense” Hydrogen as a fuel or be changed to do so??

It appears to me that it is long overdue that car companies should be fitting these from the first build ... OH !! sorry .. that means their vehicles would last longer and do them out of money. Good presentation

Never been a big fan of compression ignition.(diesel) .Next one i buy will be a Y62. Albiet with a bit more fuel use .

So...one good question....WHY do manufacturers not pre-install a Huge Catch Can.....its not like this is not a known issue and that skirting the simple installation of a catcha can will save money..... epxlain?

I ve seen some people installed 2 Catch Can for a better result. Why not most of the racing cars in the circuit have 4 Catch Cans installed to get a maximum performance.

Do you have a distributer in New Zealand and will they fit 3 litre surf 1997 model thank you Quinn

I installed a catch can and did EGR delete. Then I did an intake clean and also remove D swirl flaps coz they're known to come loose and get sucked in. 79k km. It was pretty sooty. I'm still concerned about valve seats and piston heads.

Incorrect! The problem is the EGR soot. You need to reduce that by a blanking plate, generally a 7mm to 8mm hole blanking plate will significantly reduce build up. You have butterfly valves and the valves that need lubrication from vented engine gas. Diesel use to get this lubrication before direct injection. Now diesel is directly injected it bypass the additional lubrication diesal inlets need. Reduce EGR soot and leave the oil, the oil will act as a cleaner and remove the reduced soot. Taking away the lubrication the soot will still cake your inlet. Reduce EGR and keep engine gas recirculation. It's minimal oil! Have you ever check your oil and noticed it dropping? No! If your worried about intercooler reducing its cooling efficiency, pull it off every service and high pressure clean it out. It's only 4bolts and 2 hose clamps. Again it's not blanking it reducing EGR by 90% it still gets through just slower

my BT50 2015 has done 107,000 k - should I get a catch can? or too late?

A diesel engine doesn't need an EGR to run perfectly

What I dont understand is why is the crank case overpressure fed back after the catch-can into the motor and not just off into the air...?

Agree and have fitted one to my Landcruiser. Got to wonder why they are not fitted by the vehicle manufacturers.

Hey guys, why on the commonrail and what about DI?