Will BG245 clean the injectors in 1.6HDi?

Do these fuel system cleaners really work?
If you want to see cleaner injectors here is a video that shows how after Wynn's diesel injector cleaner, the injectors are cleaner: • Wynn's diesel injector...
This is a test of the BG245 fuel system/injector cleaner in a 1.6HDi Peugeot Partner (2007; 90bhp; 66kW; 9HXC engine; ~100,000 miles or ~161,000 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. The car was also warmed, so not to affect the readings. These 3 were done in quick succession. BG245 was then added to the nearly empty fuel tank and filled with normal diesel (Texaco). I drove ~630-650 miles with the BG245, mainly shorter journeys (~60%) but also some motorway/highway as well (~40%). 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 BG245 apparently contains PEA (polyetheramine) or Techron. Also, here and there on variety of chats Shell V power puts in their v power diesel fuel. How true that is, is a different topic.
The video is 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 the injectors are good if they return less than 25ml per min. I am not too sure about these values. After the test 3 of my injectors return less than 25ml per min. So, there might be some merit in this less than 25ml per min at idle.
If you find this video useful, buy me a coffee: www.paypal.com/paypalme/morem...
Here are the results. No difference at after the use of the BG245. What is even more, all of the injectors were returning a bit more after that, not less. Nevertheless, the difference was not statistically significant. Also, I did not notice any effect on performance or the fuel economy.
Here are the list of things that I used:
All my car-related purchases: www.amazon.co.uk/shop/moremol...
BG 245 Premium Diesel Fuel System Cleaner 325ml (amazon UK): amzn.to/3b830ms or ebay: ebay.us/ryBYqt
Fuel Flow Meter Leak Off Tester Kit Common Rail 6 Cylinder Diesel Adaptor Set (amazon UK): amzn.to/3rZ1mOL or ebay: ebay.us/uEkQwJ
Leak Off Fuel Pipe (Injector Return Hose) (amazon UK): amzn.to/3LEOMyZ or ebay: ebay.us/CCRda7
How to perform leak-off injector test: • How to test injectors ...
Here are the actual numbers. inj means injector. The number after means the number of the injector, counting from left to right and the second number is 1 or 2 (1 before BG245 and 2 after BG245). For example, inj_4_1 is injector 4 (first from left) 1st time, i.e. before BG245.
inj_4_1 inj_3_1 inj_2_1 inj_1_1 inj_4_2 inj_3_2 inj_2_2 inj_1_2
35 47.5 35 42.5 35.5 50.05 38 41.5
32 43.5 31.5 36.5 35 49.5 36.5 39.5
31.5 44 32 37 33.5 48 35 38.5
#HDi #BG245 #InjectorCleaning
Disclaimer: Use the information provided in this video at Your Own Risk. More molecules provides this video for informational purposes only and assumes no liability for any damage or loss incurred as a result of the use of the information or tools presented in this video. The information provided here may contain inaccuracies and more molecules cannot guarantee the correctness or reliability of the content.
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[@corasrazvan8637]

Great video, i really like that you went to a lot of hassle to find results . Great content !

[@sathwickborugadda4744]

You did a lot of work and very informative

[@switchest26]

Great video.... I used BG24k a few times in my petrol Opel Astra and I was getting good milage for a 20 year old car (50mpg cruising at 55mph... I think overall 36mpg mixed driving) ... Also serviced regularly..... I recently used 245 in my 2005 Caddy SDi and am hoping it helps.... The fuel filter was horrendous, black diesel in there... Its all clean now...... I took it for a spirited drive down the motorway. Many thanks for the time you spent.

[@shakjaved2734]

Fantastic Analysis by a true Engineer ! One of the best videos I have seen also thank you for saving my hard earned money 👍

[@moremolecules]

Hi shak, thatnk you for the appreciation!

[@arunas554]

Great video and thank you for sharing!

[@wokeupandsmellthecoffee214]

Excellent video, clever guy thank you.

[@micooperation2084]

Well done!! Thanks for the video. Very clever I say!

[@moremolecules]

Thank you!

[@lmc1dj]

Great video.

[@romanprochazka6146]

Thank you very much for the video.Very much work. It was on the level...Diesel injectors must be ultrasonically cleaned. Then it makes sense. Fuel additives and cleaners yes, as a only prevention...

[@moremolecules]

Hi Roman, absolutely agree. They should be ultrasonically cleaned, but for the average user some sort of fuel additive that keeps them in check would be really great. It is quite a bit of work to remove them.

[@ox-cetane4887]

Mr. More Molecules, This is an excellent video. Thanks for doing it. In my opinion what you prove here is that fuel additive manufacturers have not explained what problem in the fuel their additive is correcting. For over a year now I have been asking those supposedly in the know? If anyone has ever defined for them the meaning of "Diesel fuel lubricity beyond just the words?" or what is the causal mechanism for poor diesel fuel lubricity? I have still have not got an answer. Good video here.

[@moremolecules]

Completely agree on all of the points. Difficult to know what is going on and no one gives you any info.

[@stevevye6119]

Good video- maybe it’s possible that the BG245 has either cleaned or loosened up dirt/particles in the system and that could be the reason why the results were worse after the cleaner. Maybe you could try using the cleaner and running an external tank with an online filter in place to catch whatever is in the system and not let it be pumped back through the system / injectors. Best of luck.

[@moremolecules]

Hi Steve, many thanks for the comment, really appreciate it. It could be, but the fuel filter is supposed to capture these particles. Otherwise the fuel is under too much pressure in order to do an online filter. Unless of course the dirt/particles are in the high pressure lines going to the injectors, but unless I take them all off and soak them in the BG245, it is very difficult to do anything about them.

[@dieseltips]

why you took away the catch can setup? great job, I got my injectors cleaned after the engine was repaired, but I still can smell some diesel smoke in the air while in idle, I dont see smoke going out of the exhaust. Im going to try a cleaner in the fuel tank.

[@moremolecules]

Hi DieselTips, it's only temporary for the oil catch can. I already replaced the turbo (another video will come when I edit it) and it was easier to test everything with the original intake. I have a new idea for the oil catch can, to test 2 cans at the same time, to see which one is better

[@alexanderzabilotsky5998]

I use the 244 in my Octavia 1.9 axr for 13 years and it runs just great. All original parts , 435.000...

[@moremolecules]

Hi Alexander, it's all good with what you say, but probably the question should be will it have run the same way if you had not used it. With your car you have more usage than most people, I assume 435k km, so ~20k miles per year. Most engines run much better when at operating temperature, not stop and start and short journeys. All original parts, I doubt it, how about belts, etc.

[@alexanderzabilotsky5998]

@@moremolecules "original parts" I mean oil/fuel depending... . I using Skoda diesel cars since 2000 . 5 cars.... .I been used many brands of oils ,additives and I can assure you that BG products is working. Not just fuel additives. Gear oils is wonderful to. Oil additives I don't use. It's foolish... .

[@extremesports5345]

Hi I was wondering if you can advise me. After turbo failure I changed it with new unit, cleaned egr, one injector and now the car smokes heavily when warmed up. Any suggestions?

[@moremolecules]

Smokes under acceleration or just idle. Also, what kind of smoke is it? Blue, black, white?

[@stevescet]

Very interesting, I always had my doubts on these cleaners ! I wonder if an ultrasonic cleaner would be more successful?

[@moremolecules]

Hi Steve, AFAIK the ultrasonic should be a lot more successful, although there is some school of thought that they become worse after that, but I do not see why that would be so.

[@romanprochazka6146]

Yes, the ultrasound cleaned very well, at a glance, before and after is big different. For me 1.9 JTD. Owning an industrial ultrasonic cleaner and taking out the injectors is quite simple.

[@mersas23]

Thanks for video, so basically now you can send injector 3 and 1 for professional cleaning and your car will run much better? 🤔🙂

[@moremolecules]

Hahaha, not there yet, but getting closer.

[@judehsammour2170]

Did you change the fuel filters after the tank was finished cause I herd that you should right after you do a tank full with this product you should change the fuel filter right away so all the stuff that got loose from cleaning that went into the filter is new and clean again

[@moremolecules]

Hi Judeh, Hmm, I did not think about this and I have not changed the fuel filter beforehand. Nevertheless, the fuel filter is inline, so in other words if there are any debris that fall off before the fuel filter they should be captured by the filter. If there are any debris that fall off after the filter, even if I change the filter these will be always there. Unless of course finer particles wash off, pass the fuel filter and clog the injectors. Many thanks for the comment, might have to think something out.

[@SunnyS3506]

Correct me if I'm wrong, I'm not an expert. I gave it some beans in lower gears, and the smoke disappeared alo g with the diesel smell. That was quarter tank left. I put this stuff in. Drove on the motorway for an hour. It was much smoother and cleaner thus the injectors must have been cleaned or something would have been cleaned. Please give me any input as to why it worked for me. This stuff Is not snake oil in my opinion atleast.

[@moremolecules]

There are a lot of assumption in my setup. I never said they are a snake oil, it is just that in what tests I was doing it did not show an improvement. There are multiple reasons why injectors might be clogged. It could be that mine are not clogged, but something else and no treatment will work. Also, engines are different. Furthermore, my test is a simple leak-off test, this is an approximation to how clean the injectors are, and it is not perfect. In all fairness, if there was a better test I would use it to see what works. Also, one needs probably 10-20 vehicles to test this and average out the effect from engines and so on. I am only one person and do not have a team around to do all that. I also rely on a test, albeit an approximation, instead of having a personal feel for the car if it is smoother and cleaner. This is not saying that it did not work in your case. THe best would be to take out the injectors, test them for spray pattern, then put them back on, do the treatment, then take them off again and see if that has improved anything. That is a lot of work for an youtube video that in most cases will give you ~$5. If of course some big youtuber with millions of subscribers/watchers does this there is return. I am also doing it for my own personal understanding of what could work on my older car.

[@davidvukusich63]

Maybe the line to the injector was restricted as well as the injector and then putting the BG 245 in ..opened up the line up to the injector and more fuel got to the injector and the return line that’s the reason why you’re getting more to the return line after the big 245

[@moremolecules]

Good question, but I do not think that is what was hapenning here. If that was the case there would be differences in the high pressure pump pressures. I did check that (not shown in video unfortunately) and there were not any differences. Also, if that was the case, I agree that if one injector showed a bit of movement like this maybe there could be something like this, but all 4 is a bit difficult to reconcile. If the lines to the injectors is somewhat blocked, the high pressure pump needs to increae quite a bit the pressure in order for me to measure normal return values of the fuel.

[@emmanuelhud1]

Hi I have a a 1.6 hdi and the egr will not fit. Do you know why ? I know you have a 1.6 hdi so that why I'm asking. Thank you

[@moremolecules]

Hi emmanuel, what do you mean the EGR will not fit? I assume, you have taken it out and now you cannot put it back? If this is the case, then put the end in the intercooler first and then the other to the engine.

[@emmanuelhud1]

@@moremolecules I bought the van with part number 9672880080 egr, but it is leaking because it's the wrong part. And the last owner must of broke the mounting holes to make it fit. Do you know of any other part number that will fit the 1.6 hdi ? As I can fit one.i will upload a video

[@emmanuelhud1]

@@moremolecules kzbin.info/www/bejne/sH_OeKSGpsuiZ7M

[@moremolecules]

@@emmanuelhud1 Do you mean the bolts are not fitting? You may want to do new thread on these. Not too sure which part number for the EGR you are looking for. You can check here for part numbers (change the car to peugeot if yurs is peugeot instead of citroen) www.catcar.info/citroen/

[@emmanuelhud1]

@@moremolecules thank you for your help. I looked on the website and the oem part number is the same 1618NR is the citroen part number and 9672880080 is the Peugeot part number. I do not know why it will not fit. It should. This video shows pictures of the wrong part that came on the van. And the last owner broke it to make it fit. I also included the parts I bought and still mine do not fit either. I am probably going to have to take it to a citroen dealership. m.kzbin.info/www/bejne/jZbcmpeqoNt5eKs

[@jjmmjj9999]

Very clean 1.6 engine there. Jealous Mines covered in oil and shit lol.

[@moremolecules]

Haha, it just happened I guess, as I have not cleaned anything on the engine. Of course if I spill something I would clean it, but I do not put specific effort in cleaning it.

[@jjmmjj9999]

@@moremolecules I popped the boost hose from intercooler to drivers side (throttle body) off today, put my hand under the throttle body to put the pipe back on and my hand was dripping in oil lol. I think when i've got time i'll degrease and lightly pressure wash the bay

[@moremolecules]

@@jjmmjj9999 Yes, the hoses of the intercooler will be heavily coated with oil, it is just inevitable.

[@DRJMF1]

I have a d4d 2 litre Toyota. In winter, carbon deposits build up in the engine causing fuel economy to fall. Carbon builds up since engine temperature does not get to its operating temperature after the short 6 mile journey. Hence I use BG245. How often should I use bg245, and what time of year should I use it ? Should I use it prior to a winter service in October, or use it in mid winter ? Using it in mid winter to remove carbon makes sense right ? Thanks, great video. Big 245 is especially effective on high compression Diesel engines like the Corolla 2003 d4d. I want to get to 250k miles.

[@moremolecules]

If the BG245 helps your engine, I would use it every 3rd fill up. You could also try Wynn's injector cleaner (kzbin.info/www/bejne/eamte6eGdtd3b7s), I found it to work better at cleaning than BG245

[@DRJMF1]

Thank our for your sharing your practical research. I know a man who uses the Wynn’s product at every diesel fill up, and he swears by it as being effective in his old Mitsubishi 2 litre diesel truck, but the bg245 is too expensive to do that. The shell v power diesel fuel did not help my car. I think it makes sense that during winter months, when engine does heat up enough on short trips, then the carbon soot deposit problem gets quite serious and can eventually trash your car.

[@tomaszwojtarowicz2248]

Hi. Very impressive but there is also information about fuel high pressure pomp and fuel lines... Is it possibile (?) That the lines and the pomp was cleaned so the pomp can have higher flow rate?

[@moremolecules]

Hi Tomasz, this is a really interesting point and thank you for the comment. Unfortunately I have not measured the fuel pressure before and after to address this. Nevertheless, I do not think this is happening. Why? I am having a second go at this with another injector cleaner. What I did notice is that with all injectors the return has been gradually increasing with time, so they are getting more blocked with time. It is unlikely that the fuel pump is decreasing its output that drastically with time. I'm not saying that this cannot account for some of the increase after the injector cleaner, it is possible. As far as I remember last time I checked the fuel pressure it is fairly constant and it does not fluctuate much. Really interesting point, but if you had posted the comment 2 weeks ago I could have done something about it.

[@terranoid7300]

I just bought BG244 and it’s for diesel as well, you are saying it is for petrol🤷‍♂️ Otherwise great work you’ve done 👍👍👍

[@moremolecules]

My info was that BG244 was for petrol and BG245 for diesels, not too sure why yours say that it is for diesel as well.

[@Youssef_A.]

BG 244 et BG 245 sont tous les deux pour le diesel, pour l'essence c'est BG 44K

[@ivokretek7055]

I bought cleaner yesterady, not applied yet. But there is written to use 946 ml of BG for 1 fuel tank 50l - 70 l for the first cleaning. Small package that you used shoul be used every 15 000 km after firts cleaning just to maintain the fuel system.

[@moremolecules]

Hi Ivo, well, yes. To maintain the system it has to be continually used, but my problem was that even the first batch of the stuff did not clean anything, so why waste more money to continue cleaning nothing. It is very good for the company that sells the stuff, but does nothing to my engine and mainly empties my wallet.

[@ivokretek7055]

You are absolutely right. My question was to ask, if you didnt use small amount af BG for first cleaning. You used cca 0,6 % (0,3 l/50 l) of BG in fuel, but it should be used 2% (1 l/50 l). I dont think, there will be any difference, but maybe. I will write you later after my use. Also if I am correct, your all injectors were in spec (means ok) before the test. Maybe they were clean and there was nothing to clean on them. Am I right?

[@moremolecules]

@@ivokretek7055 I followed the instructions on the label of the can. It says, one can per 60L of fuel. Where do you get the 2% from? They were not as clean, two were certainly returning more than the others, meaning there were a bit on the dirty side. Even if they were clean, I would say the BG245 should do nothing in that case or at least the returned fuel should be the same. I could perhaps try 30L of fuel and 1 can.

[@ivokretek7055]

​@@moremolecules I was checking also instructions on the bigger packaging 1 l. There is no notice about usage for 50 l. The advice was in the instruction on czech eshop. www.autodily-pema.cz/bg-245-premium-diesel-fuel-system-cleaner-325ml?gclid=CjwKCAiAouD_BRBIEiwALhJH6GfmwHBQ9qQS1psU4QZIFGMtSpbEaDh8PhPHrLI6DJj-ZWjGB1ccLhoCeUEQAvD_BwE Translation is english : "it only needs to be poured into the fuel tank once every 15,000 km. If the product is not used preventively from a new engine, it is recommended to use a larger package of BG 245 (946 ml) per fuel tank (50-70 liters) for the first application and then one package (325 ml) every 15,000 km as a precaution."

[@viliambena6767]

can you check VIF next time ? it's like 4-5 times cheaper and very popular

[@moremolecules]

Hi Viliam, yes I could try it. I will see what I can do and if I manage to test I will post it.

[@moremolecules]

What is VIF, I cannot quite find it. Do you have a link.

[@viliambena6767]

@@moremolecules hello, forgot to add that I'm thankful for your little test, took some work for sure 😉 I'm using VIF mentioned, mostly becasue I don't believe that fuel in my country is that nice quality and for the price around 7€ / 500ml , I think it's dosed 20ml for 20l of fuel

[@viliambena6767]

@@moremolecules ah I see that in UK seems noone to import it :/ here in Slovakia / Czech republic you can buy it everywhere even on gas stations and supermarkets. They are discussed a lot by local magazines as they compared ingredients lists with more expensive products and it holds up very well. Can spare a word with a friends from UK if they would send you some in case. Last time I was in the UK some polish local shops had it in stock Here is the link in local language for winter version diesel aditiva.heureka.sk/vif-super-diesel-aditiv-zimny-500-ml/ summer diesel aditiva.heureka.sk/vif-super-diesel-aditiv-letny-500-ml/ petrol aditiva.heureka.sk/vif-super-benzin-aditiv-500-ml/ official site vif.cz

[@moremolecules]

@@viliambena6767 Many thanks, I will see if I can get it here in the UK. I might visit a polish shop once the pandemic is over.

[@DevinderAthwal306]

Great video. Hate seeing the typical video of people using these types of cleaners and then subjectively describing the results with now facts. Could the temperature of the fuel, engine or atmospheric conditions have played a part in the difference in results? Out of interest how many miles did you do with the cleaner in the tank? Also have you heard of people using two stroke oil with the diesel? I think there was a study done where I think 10% added to fuel and they found the it helped reduce wear on the injectors.

[@moremolecules]

Hi Devinder, I am also always annoyed by people just claiming that it works and it is always the usual: "I can feel there is more power, less fuel consumed, pulls much better, etc.". I think I went on nearly a full tank of diesel. I checked and it was ~640miles with the cleaner. Probably could have gone a bit more, but I do not like to go too low on the fuel in the tank, all the dirt at the bottom might get sucked. I have heard about the two-stroke oil, but I am a bit apprehensive to use it. Out of my interest, I will probably do a few other injector cleaners, as it is relatively easy to test. The problem is, as you have mentioned, I cannot quite control the temperature, driving and atmospheric conditions, etc. But for a DIY (non-lab test) is probably as good as I can do it.

[@nickcook7408]

Where is your pickup? And why is there dirt in your tank?

[@kevinblaylock9883]

Need to use as high concentration. I have good results with low fuel application . If you fill the tank then use any injector cleaner, it will dilute the cleaner and take longer to work 🙂👍

[@moremolecules]

I only followed the instructions on the can.

[@denidejanivanov]

Injector Pilot Learning or Small Quantity Learning

[@moremolecules]

Not too sure what you mean, but might be interesting :-)

[@denidejanivanov]

@@moremolecules kzbin.info/www/bejne/hIbZiKGFmZqffNk

[@denidejanivanov]

now you have better flow BUT your ECU does not know that ECU have to decrease injector open time interval "during routine servicing, manufacturers may require the technician carry out a procedure to teach the ECU the ideal Pilot Injection for the engine. This is called ‘Pilot learning’ or Small quantity learning’

[@moremolecules]

@@denidejanivanov Many thanks for the reply and info, much appreciated. If there was a better flow, then assuming of course the same fuel pressure, there should be less returned fuel, if more is coming through the injectors. I see the opposite, more or about the same returned fuel, suggesting even more block in the injectors. Maybe I am missing something in the understanding.