Can Wynn's diesel injector cleaner do better with higher concentration (1.6HDi)

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Wynn's cleaned the injectors in my 1.6HDi first time, but I put 37L of diesel fuel. This time I am doing a double dose of 20L of diesel. Will it work better?
This is a test of the Wynn's fuel system/injector cleaner in a turbo diesel 1.6HDi Peugeot Partner (2007; 90bhp; 66kW; 9HXC engine; ~106,000 miles or ~171,000 km), same as a Citroen Berlingo.
The tests comprises reading 3 times the leak-off of the injectors in the Peugeot Partner when the fuel tank was nearly empty before pouring the Wynn's diesel injector cleaner. The car was also warmed, so not to affect the readings. These 3 tests for each injector were done in a quick succession. Overall it takes me ~1.5h to do the 3 measurements for the 4 injectors. The Wynn's diesel injector cleaner was then added to the nearly empty fuel tank and filled with normal diesel (Texaco). I drove 240 miles with the Wynn's diesel injector cleaner, mainly shorter journeys (~70%) but also some motorway/highway as well (~30%) for about 2 months, so lots of stops and goes and sometimes the car stood not drive for a few days (due to the pandemic). The fuel tank was again nearly empty and I did the same 3 measurements of the fuel returned by the injectors. The idea is that if an injector is blocked it will return a lot of fuel back as compared to a normal (non-blocked) injector. Fuel is under pressure and a blocked injector will result in slightly more fuel returning than going through the injector. It is not entirely scientific method and it is a bit crude and there could be a lot of variability. Nevertheless, it is fairly OK and I can easily perform it.
The video also shows how to perform a leak-off test or measure the return flow of the diesel from the injectors. Overall, one has to look for the variance between the injectors rather than some arbitrary constant return flow. There are some websites where it is stipulated that if the injectors are good if they return less than 25ml per min. I am not too sure about these values. After the test all of my injectors return less than 25ml per min. So, there might be some merit in this less than 25ml per min at idle.
This time around with 20L of diesel on top of the Wynn's diesel injector cleaner, it did not clean the injectors at all. It is possible that I have reached the maximum these injectors can be cleaned with chemicals.
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Wynn's diesel injector cleaner 325ml:
amazon (UK) amzn.to/2VdRfsS or ebay: ebay.us/gC59KE
Wynn's diesel injector cleaner 3x325ml (amazon UK): amzn.to/3Chrgl4 or ebay: ebay.us/FbKZhD
Fuel Flow Meter Leak Off Tester Kit (amazon UK): amzn.to/3rZ1mOL or ebay: ebay.us/uEkQwJ
BG 245 Diesel Cleaner 325ml (amazon UK): amzn.to/3b830ms or ebay: ebay.us/BRuPNy
Leak Off Fuel Pipe (amazon UK): amzn.to/3qQprrp or ebay: ebay.us/CCRda7
My previous test with the Wynn's diesel injector cleaner ( • Wynn's diesel injector... )
How to perform leak-off injector test ( • How to test injectors ... )
My previous test with the BG245 cleaner ( • Will BG245 clean the i... )
#HDi #InjectorCleaning #Wynns
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3 апр 2022

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Комментарии : 93

@jimmyboimazarti1234 9 месяцев назад

This stuff is amazing changed the way my van runs in a good way lol mad stuff

@gregorydobson4307 Год назад

Very good video & detailed info. I took my injectors out and manually cleaned them as I had timing belt/broken tappet issues at the time. My 1.6 hdi had covered 69,000 miles and two of the injectors were only squirting fuel of of two holes on each nozzle. I soaked them in brake cleaner but to no avail, so put them in an ultrasonic bath which did work.

@moremolecules Год назад

Many thanks for your comment, appreciate it. Yes, taking them out and cleaning then with an ultrasonic cleaner is the best way, although refurbishing them even better.

@olliesengineworld 6 месяцев назад

I had a really bad white smoke on cold start up and it used to judder the van aswell and I knew it was a blocked injector! So I used the stp diesel injector cleaner version as I had some left over at work it says on the bottle 200ml to a full tank of diesel But I put 3 bottles of the stp version in to 30pound of diesel and within 3days it got rid of the juddering on cold start up! And hardly any white smoke! Thanks alot for this video So from now on I will be putting that in my van every 3000miles

@moremolecules 6 месяцев назад

Yeah, I might this stp diesel injector a go. Thanks for the suggestion.

@Kakofy 2 года назад

Like your video. Keep going. 1.6 hdi the best!

@andypennington7140 Год назад

Very good video,I have use before on my Skoda Octavia mk2 2.0 psi engine with good results bought with 125.000 miles and had a good life and sadly moved it on with 259.000 !Now I have a new model mk3 common rail cr version 2.0 tdi and changed filters and going to reuse this product .bought with 76.000 and now at 111.000 so it’s time to apply because it’s using more fuel lately. Let’s see what happens.

@arts6535 2 года назад

Well done for going into such a details. I been doing taxi in London and done around 60,000 miles a year . I had always 1.6 diesel engines , such Ford Focus 2014 estate ,Mondeo mk4 2013 ,and Astra J 2015 1.6 diesel 136bhp and chain driven. I tried all the diesel and injectors cleaners like : Liqui momy, Wynns ,STP , Redex, Forte, but they all sort of worked a bit . And l did change the oil EVERY 5000 MILES ... Nearly every month. Just oil and oil filter ,the rest every 6 months . But the best treatment that really really worked for me , on the miles that done it's the one called : Archoil AR6900-D Max Advanced Diesel Fuel Synthesis . This stuff it's magical, my engine it's extremely quiet in the very cold morning and loads more power and revs less than 2000 rpm , on cruise control on the 6 gear doing 70 mph.. I am not an expert just giving my opinion what worked for me ...

@moremolecules 2 года назад

Many thanks indeed for the comment/suggestion, really appreciated. I will have a go at the liqui moly as it is relatively easy to do and I do not need to wait to exhaust the fuel in the tank. If that does nothing I will try the Archoil as well.

@kaanerdem2822 Год назад

Might do a test with k2 diesel dictum, lots of eastern europeans use this (never heard of before) it has ads on youtube and other non english reviews but might be interested in it.

@khalidacosta7133 Год назад

The industry standard test is the CEC F-98-08 which luckily for us, takes place on a Peugeot 2.0 HDi. The Archoil AR6900D Max is tested to those conditions, hence it actually works.

@slashermcgurk2191 2 года назад

Just run it on just injector cleaner, it’s cheaper than diesel now…

@moremolecules 2 года назад

Hahaha, probably cheaper. I know that it can run on liqui molly, but did not want to risk it to run it on the Wynn's.

@justso1823 Год назад

At the old taxi garage I worked at we used 50% injector cleaner 50% diesel straight into the fuel filter on the service interval so first start got the full hit. When using an injector cleaner it also dislodges the dirt from an old fuel filter into the injectors. So always change the fuel filter after an injector treatment

@nicub Год назад

Why not change the fuel filter before the injector treatment?

@justso1823 Год назад

@@nicub we did putting the injector cleaner straight in the new fuel filter.

@connolly875 2 года назад

I use ARAL ULTIMATE DIESEL for my A1 TDI and never had a problem with injektors or the exhaust gas circulation valve.the engine is calm and smooth...

@Andrew-rw4nd Год назад

what is your mileage?

@rockyfish3115 Год назад

Use half a litre of two oil in half a tank of diesel this can also cure sticky injectors if you have a dpf then use quarter of a litre

@Wizardry77 8 месяцев назад

Old video I know, but seems like maybe it was to concentrated so didn’t have a sustained affect. over a long period of a more diluted solution seems to have a better result in this case or it could be as you mentioned it had already cleaned what it was capable of cleaning. Maybe a 3rd video I bought the same product as the in the video today and says treats up to 60 litres so maybe try this test again with a higher amount of fuel

@MikkoRantalainen Месяц назад

One thing worth mentioning would have to tell us how recently the fuel filter was changed. Some diesel engines have reduced fuel flow with clogged fuel filter that doesn't prevent engine from running but reduces max performance. And obviously a clogged fuel filter might affect this measurement, too, especially if the fuel has different temperature during the tests.

@moremolecules 24 дня назад

The fuel filter was relatively recently changed before that test, it has not been changed for the duration of the test. The fuel from the filter goes to the high pressure pump, so this does not restrict or affect the test. It is the return (excess) fuel that comes back from the injectors.

@MikkoRantalainen 24 дня назад

@@moremolecules If the filter was relatively new, then you don't have problems. I'm asking because it's not unhead of that the filter is so clogged that the high pressure pump is failing to get enough fuel to the input pipe and as a result, fuel delivery is starved. If you keep adding additives without replacing the fuel filter, the results may be affected by the filter if it's the new the bottleneck of the whole system. One repair shop also claimed that some fuel filters by low quality 3rd parties limit the fuel flow even as new compared to OEM quality parts. I don't know if it was just marketing talk in reality.

@khalidacosta7133 Год назад

The industry standard test is the CEC F-98-08 which luckily for us, takes place on a Peugeot 2.0 BTED HDi. The Archoil AR6900D Max is tested to those conditions, hence it actually works. The newer CEC F-110-16 test takes place on the CTED HDi engines but I haven't found any commercial fuel additives for that test.

@moremolecules Год назад

Many thanks for that info, appreciated. I know my tests are semi-scientific, probably not even that, but difficult to setup a proper scientific test.

@khalidacosta7133 Год назад

@@moremolecules It's almost impossible to setup a scientific test... it's why I sought out the fuel additives which were tested. There are a few products out there which was tested - this showed the most promise. There is also BASF KEROPUR-D which shows promising data. Most of the other additives are not worth the money.

@arekw7108 11 месяцев назад

@@moremolecules I can honestly recommend the Archoil, it works so good that my 1.6hdi developed a fuel leak on one of the connectors to the injector. Turns out, the oring was pershied, but some dirt was keeping it toghether ;) Good stuff.

@BYMERZ 2 года назад

You can also do a test with the Archoil AR6400-D MAX Otherwise very good video.

@moremolecules 2 года назад

Yes sure. I will do the liqui molly first and then perhaps do a poll on my channel with variety of additives for cleaning. Then I can do them one by one in whichever order they are voted.

@bitconnect Год назад

hey im really interested if there is a possibility to easily tune this engine. any possibility to increase the boost pressure? you seem like such a knowledgable person regarding this engine. best regards

@moremolecules Год назад

Yes, it is kind of easy to tune up this engine. You can failry easily achieve 110bph from the stock 92bhp with a ECU remap. From then on it needs new turbo, intercooler and so on.

@paulking5665 2 года назад

I have a Citroen C3 Picasso 1.6 HDi (110 HP engine) 2012 with 69,000 miles on the clock and was finding that a cold start would take a couple of seconds cranking to start the engine. when i was shopping at Tesco they had a half price offer on Redex diesel fuel system treatment at £2 so i bought it and put half a bottle in at my next fill up which i put 27 litres of Costco premium diesel at £1.70 per litre!!! After using half of this fuel with the Redex added the car now starts up instantly and even sounds a little quieter. Thank you for your videos on your Peugot 1.6Hdi More Molecules they have helped me and many others with this engine do a lot of maintenance I just wish my egr valve was as easy to get to as yours is. My timing belt/water pump/tensioner is now 10 years old and needs replacing. where is your video for this?

@moremolecules 2 года назад

Thank you for the good words. I will eventually test redex as well, as it is quite popular. Unfortuntely, I do not have yet a video of the belts. Maybe I should do one :-)

@paulking5665 2 года назад

@@moremolecules You can help me change my timing belt if you want! :)

@moremolecules 2 года назад

@@paulking5665 Hahaha, you would not want me to change it. I am waaay too slow when doing stuff on my car. Editing helps remove the long intervals of thinking: "how the hell have they designed it in a way that it cannot be removed", :-)

@paulking5665 2 года назад

@@moremolecules Yep, I also take a long time when working on my car. I have just changed the gearbox oil on my car but it took me about 3 weeks to think it over in my head before I actually did it and even then it took about 3 hours. Got my air con re gassed yesterday but still no cold air but it is holding the gas so now I need to figure out what is stopping it from working - probably another 3 weeks of thinking it over then :-)

@salihcolak677 2 года назад

Can you give the link of where we can get the screen in the middle chest in this vehicle

@moremolecules 2 года назад

Hi Salih, not too sure what you mean by the screen in the middle chest? Otherwise I would put a link if I knew what you mean. Sorry.

@johnnyboy4711 Год назад

Have you tried LiQUI MOLY and or Dipetane for injector cleaners? wondering how it compares against Wynns

@moremolecules Год назад

Not yet, but have all the components for a liqui moly test 🙂I will do it in the next month or so. It is a bit more complex as one needs to bypass the fuel filter and run the liqui moly through the fuel in/out lines. Once I do it and will put a comparison with the Wynns.

@johnnyboy4711 Год назад

@@moremolecules well done,fantastic stats detail!

@mizanurrahman9678 2 года назад

Hi I got Peugeot partner, and in the dashboard saying DPF fluid turn out. Can I top up pat fluid. But I don't know how to remove their the sign on. Do you know anything about it. Many thanks

@moremolecules 2 года назад

Yeah, not too sure about the DPF fluid. You should be able to top it up. What do you mean by removing sign on?

@bartekbartek8013 2 года назад

Hello, I was cleaning the injectors directly bypassing the fuel tank, I connected to the injection rail because the car was changing and I did this treatment twice a year and now I have peace. The preparation is liqud moly desel. I also recommend such a procedure

@moremolecules 2 года назад

Hi Bartek, yes that was my next step to try liqui molly with bypassing the fuel tank and the fuel filter. I only repeated this as it worked the first time around and wanted to see if it is better with less diesel. It is also simper to do for most people as well, without any additional connections.

@bartekbartek8013 2 года назад

Really try it and you will see differences in pre-rinse and post-rinse parameters. In my 307 1.6 hdi, I had the injection standards and now I have max 0.05 at idle, this is how it shows me obd2 icar and the fap light app

@moremolecules 2 года назад

@@bartekbartek8013 Exactly. Are these "injection standards" the injector's correction values? If these are the correction values, 0.05 is pretty amazing actually.

@bartekbartek8013 2 года назад

@@moremolecules Yes cleaning liqud im very hapyy . You try and send on you tube video on your chanel and I will WATCH

@thatperson8586 8 дней назад

I've been trying to figure out something specific with the HDI/TDCI engines. Can't seem to find any info though, haven't been able to find anything on your channel about it either... So we both know how dirty the 1.6 HDI gets, question is; how can we clean the valves that the intake feeds? I've seen a few vids with other cars, whereby there is a larger hole, about the size of a custard cream/bourbon biscuit, but the HDI ones seem as big as maybe a £2 coin. The most popular method I see is a walnut clean. Sadly I don't have a drive or a compressor, only a high volume air gun. I have seen people spray, brush with a gentle bristle brush and then vacuum out the crud, so that's probably my option, but I wanted to see if there are any resources to potentially help. Would be good if you could perhaps do a video on cleaning the valves from the engine, as I reckon they'd be very grimy!

@moremolecules 7 дней назад

I bet they will be very grimy. Yeah, I will have to think about doing one of these, although work and so on other commitments, might be a bit. Nevertheless, many thanks indeed for the comment and suggestion. Noted!

@vicenziux521 Год назад

Hi, I have the following problem with my c4 1.6hdi 109 hp year 2007 euro 3, after the engine warms up it stops firing, I changed the pressure sensor, egr, vacuum sensor plus hoses plus flowmeter but I noticed that if I remove the plug from the car's flowmeter it works perfectly, if I plug it in again, the fun starts again and it stops firing... help, I don't know what to do with it...pls

@moremolecules Год назад

Most likely a faulty MAF sensor if you disconnect it and it works. It goes to a default map. Get a good quality MAF sensor and replace it, that should work.

@andypennington7140 Год назад

I always used to run petrol cars but the last 15 years I’ve be a convert to the Diesel engine . Firstly they don’t suffer that much with electrical brake downs and built to withstand many miles. Anyone considering a diesel car replace filters and oil regular like every 10k and don’t buy shit oil, buy long life .Yes it’s slightly more but how much is it to replace a Diesel engine.! Use diesel additives and drive hard this cleans out everything. Don’t become complacent when it’s due a cam belt and pay the price and get a genuine and a reasonable garage to fit , Yes everyone is an expert but a tooth out on the pump it won’t run right , If you gonna attempt a belt replacement lock the engine and mark every pulley before taking anything off and remember check twice and manually turn the engine before ignition!

@moremolecules Год назад

Very sound advice all around.

@rickhunter1312 Год назад

On the instructions i got on my wynns injector cleaner it says to add 1 bottle of 325ml on a full tank?

@moremolecules Год назад

Yes, that is correct, although you add the bottle to an empty tank and fill up, not the other way round. That way the liquid is better mixed with the fuel rather than putting it on top.

@rickhunter1312 Год назад

@@moremolecules thanks man

@1maxace 2 года назад

Hi I have a citroen xsara picasso 2005 diesel with code p0087 could you help please ..took to the garage they don't know. I have changed diesel filter, cam shaft sensor, power steering fluid (was neally empty) oil filter and change just incase...Code is p0087 which is low pressure fuel rail any easy fix would be great 👍

@moremolecules 2 года назад

Perhaps the high pressure sensor at the back of the engine is either faulty oe the wires a bit not making contact somewhere, maybe. I would also remove the fuel filter and take it apart and check if there are ny metal bits inside, e.g. the high pressure pump disintegrating a bit. You already replaced the fuel filter, but it should have been investigates for matal particles. I would start with the high pressure sensor.

@bakudetre6903 2 года назад

They moving so much together, I think the leaking amount is driven by some factor that not considered here.

@moremolecules 2 года назад

Hi Baku, thank you for your comment, much appreciated. I would have thought that they would move together or the leaking back amount will be linked between the different injectors. They are not independent of each other. Whatever chemicals (fuel, Wynn's, etc.) is going, it is going to every single injector. So, if these are doing something, cleaning or blocking, it will be similar or at least the amount will be linked, correlated or associated with all 4 injectors.

@bakudetre6903 2 года назад

@@moremolecules Hi, thank you for the answer. My idea is that the effect of cleaning fluid is negligible compared to the effect of different driving habits, even if one tries to replicate its own routes, habits etc. I suspect that a long period of consisten highway drive (2500+ RPM) might have a bigger effect on the injectors. Btw I always looking forward for your videos, great job, much appreciated!

@moremolecules 2 года назад

@@bakudetre6903 I see what you mean and I kind of agree, although the injection is electronically controlled and it should be stable regardless of the route or the different ways of driving. I could probably test the consistent motorway/highway driving.

@Mac_F87 10 месяцев назад

These cleaners can end up cleaning debris which is then flushed into the injectors and causing restrictions inside the injectors since the clearances are so small.

@coolissimo69 Год назад

But how do you explain going up instead coming down?

@moremolecules Год назад

The going up could be due to the injector getting blocked a bit with time. My overall measurements suggest that the injectors gradually get blocked, so if the second time the Wynn's did not do anything, the injectors will continue the upward trajectory. I have no idea why it did work the first time and did not the second time, it baffles me a bit.

@coolissimo69 Год назад

@@moremolecules could it be that is taking some carbon from the tank etc and cloking the injectors? Also just read that we should change fuel filter after using the cleaner.

@moremolecules Год назад

@@coolissimo69 For some cleaners yes, the filter needs to be changed. I do change mine at least once a year, so I have changed mine in between the measurements. There is the potential that I have not accounted for in my test and that is the pressure of the high pressure pump. Let's say it was not very efficient and the cleaner cleaned it. So, no it is more efficient and delivering higher pressure to the injectors. Then there will be more fuel returned. So it is possible that this can account for the higher measurements. The best thing at the end of the day is to take the injectors out, measure their flow rate than put them back in, use the cleaner and then take them out again and measure again. I simply cannot do that, too much work, hence my relatively alright fuel leak off test, not ideal, but easy to implement.

@coolissimo69 Год назад

@@moremolecules Makes sense , I was thinking of that too. Probably more accurate measure without taking the injectors is see the MPG .

@moremolecules Год назад

@@coolissimo69 MPG is quite difficult to accurately measure, even more variation than any other measurement. Temperature, trafic, time stationary, etc., all play a role, too many variables to control.

@ignatius2230 2 года назад

I put injector cleaner and after two months injector control valves goes kaput, 250k miles in my case, an injector failure is what is expected to happen at this mileage but maybe isnt a fully coincidence

@moremolecules 2 года назад

Yes, there could be some problems with the injector cleaners, seals/valves, etc. Nevertheless, if that led to significant problems these probably would have happened anyway.

@davepangolin4996 Год назад

I have used a bottle of Wynns in a third of a tank and then a bottle of liqui moli when nearly empty. I now run my 07 van on premium diesel as I figure the extra cost has now become irrelevant… all 3 stages have definitely improved … performance, idling and white puff of smoke on start. I have a small leak from the hex nut on top of injector 2. It is nipped up tight .. does anyone know if there is a seal in it I could replace ?

@davepangolin4996 Год назад

Maybe some ptfe or plumbers paste on the thread ?

@moremolecules Год назад

Good job with the Wynns and liqui moly. Have a look here for the injectors: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kt6zJANLaYQ.html If I were I would really observe this N2 injectoe. You may have fixe with the nipping, but if more stuff comes out, I would replace the washer at the bottom + rim the injector seat, so it is smooth surface.

@shahidkhattak2880 Год назад

Hi i have a 2013 bmw 520d, i used wynns diesel inj cleaner and now see that my diesel engine is more louder. Has anyone else seen this? I first filled the car with 20ltrs of regular diesel and then poured in the additive , drove a bit and then suddenly the engine sounded more louder like a tractor at lower gears , have i damaged anything and would this sound be permenant? Should i have first put wynns in the tank and then the diesel?

@moremolecules Год назад

It might just be a coincidence. It should not damage components and I think it does not matter if you pour the Wynns before or after. The movement of liquid in the tank will mix it up. If you want, you can top it up with diesel.

@shahidkhattak2880 Год назад

I did a similar thing on my previous car audi a3 tdi, poured a bottle of redex into a low fuel tank then drove to the nearest station thinking it wont affect it and whislt driving to it suddenly It became more noisier to this day. I dont this bmw to do the same as now sitting in the cabin all i hear is the engine and i want it back to how it sounded like a refined modern bmw engine . Also i have added more diesel to it but no change

@shahidkhattak2880 Год назад

I also didnt pour the whole wynns bottle in to it fearing what had happned last time

@moremolecules Год назад

@@shahidkhattak2880 It could be that the high pressure pump is damaged from Wynns, say higher concentration, etc. I suspect you can have live data and see what the fuel pressure is.

@shahidkhattak2880 Год назад

I was suspecting something to do with high pressure pump too :( not sure what tool to use to get live fuel pressure for a bmw, i used VAGCom for my audi before