Just open doors to prime fuel pump, walk away for 15 minutes, open door again, repeat twice, fuel pressure in the lines will entrain the air in the and it will have a negligible effect on the injection system. The electric fuel pump is at the tank, so it won't hurt the pump
@Dan123. I own a 2014 Audi A6, Done my own maintenance since I got it, replaced my own 2.0t engine after a bad timing chain tensioner killed my engine, and also I am a mechanical engineer. On a push button start the low pressure fuel pump is primed when driver's door is open. VW auto group has used the door open as a signal to prime the fuel pump since the 90s, maybe earlier. I think you don't know what you're talking about.
@@gGeorge96no doubt u r very knowledgeable. Can i ask u the way some people r saying that it has to be primed through vcds otherwise could mess up whole system is that true?i mean I don’t have vcds is this ok if i change mine without vcds? Many thanks
New pump cost me £2500 I would definitely prime the pump using vcds, fill filter with fuel or even turn on accessory power and leave on for about 3 mins before starting
Wouldn‘t it be better to turn the accessory power on & off multiple times instead of leaving it on? Because on BMWs the fuel pump which feeds the fuel to the high preassure pump only primes for about 5sec. before shutting off. So you could repeat the process x number of times to fill the system with fuel. But I agree with you, that you should pre fill the filter if possible, so you get less air in the system to begin with.
Well same as on any other car, there are many many videos how to bleed brakes, so I will not reinvent the wheel. Make sure that reservoir (master cylinder) does not run dry, otherwise you will need to bleed ABS system as well (ABS is bleed via VCDS basic settings). Pressure bleeder is very very recommended. Also 2 person pumping method, 1 person bottle method, vacuum pump, or gravity would work ok. Since these are not so safe, because you need to really be careful not to introduce air into the system, pressure bleeder is still the best. However, it is doable.
@Dan123. Yes really. You could have just as easily sent an air bubble through to the HPFP, destroyed it and sent metal shards through the fuel line. That's upward of $7k to replace all the parts affected.
@Dan123. OMFG you shouldn't be allowed anywhere near a modern common rail diesel engine. You're going to cost someone a bunch of money. The CP3 HPFP in my car can deliver up to 29K PSI
Use hose clamp pliers on hose and use vcds to take the air out of the filter and just then fit the filter and take the clamps out of the tubes. That's so wrong how you did it...
That's false, diesel filters should be replaced every 60k on this A6. Petrol filters should be fine for lifetime, but it is recommended to change them as well.
@@sunkazz I'm from India...My Audi A6 C7 vibrates when the engine is running...Do I need to change the Engine mounts? And Also My rear Air suspension doesn't work but there is suspension symbol showing on the Infotainment and mechanics told me to do complete coding to sort the issue..it will be great if you share Whatsapp number...I'll explain more in detail and kindly help me to sort out the issues
you should not run the car after you change the filter. you need to turn the car without running engine. it should stay like that 10 seconds. then you should run the engine. this because there is air after you change the filter. highly recommended !
Well think about it, what can air (that is air-fuel mixture = 1) do to an engine. It will just not start up until air-fuel is just about right. For running pumps dry, however, is another story.
@@vlmxs the hpfp is located after the fuel filter. it's on the engine with the hard piped fuel lines as the pressure it produces is extremely high hence the name "high pressure fuel pump". This type of pressure would blow normal fuel lines and the fuel filter to pieces. It needs to be fully lubricated at all times by diesel otherwise you run the risk of damaging it. You should always prime the system with vcds or obd11 ect to prevent damage.
@@sunkazz the low pressure pump is in the tank, the high pressure pump is on the engine. The low pressure would naturally prime when you "key on" the ignition anyway
May I asked why you felt the need of changing the fuel filter? Was it one of the following reasons: 1) You were getting bad gas mileages? 2) It been certain years passed and you never did that so decided to do it? 3) Like me, had this itch of messing around with perfectly working and funtion things? Also what change you noticed? Did your miles per gallon increased? Please if you can share this information.
You are a very good instructor! The way you describe the steps and your camera placement are fantastic. Thank you so much!!
Just open doors to prime fuel pump, walk away for 15 minutes, open door again, repeat twice, fuel pressure in the lines will entrain the air in the and it will have a negligible effect on the injection system. The electric fuel pump is at the tank, so it won't hurt the pump
@Dan123. Nope opening the door you can usually hear it prime
@Dan123. I own a 2014 Audi A6, Done my own maintenance since I got it, replaced my own 2.0t engine after a bad timing chain tensioner killed my engine, and also I am a mechanical engineer. On a push button start the low pressure fuel pump is primed when driver's door is open. VW auto group has used the door open as a signal to prime the fuel pump since the 90s, maybe earlier. I think you don't know what you're talking about.
@Dan123. BS it is, I have an SQ5, pump primes everytime I open the door.. listen to advice otherwise go away clown.
@Dan123. bozo
@@gGeorge96no doubt u r very knowledgeable. Can i ask u the way some people r saying that it has to be primed through vcds otherwise could mess up whole system is that true?i mean I don’t have vcds is this ok if i change mine without vcds?
Many thanks
Thank you very much for your Videos 👍 Should it be possible, to show us how you replace the oil filter an oil on the DSG ? Thanks a lot.
Hvala ti lepi! Samo nastavi sa takvim snimcima, imam ista kola i veoma dobro mi pomaze tvoj tutorial!
New pump cost me £2500 I would definitely prime the pump using vcds, fill filter with fuel or even turn on accessory power and leave on for about 3 mins before starting
Wouldn‘t it be better to turn the accessory power on & off multiple times instead of leaving it on? Because on BMWs the fuel pump which feeds the fuel to the high preassure pump only primes for about 5sec. before shutting off. So you could repeat the process x number of times to fill the system with fuel.
But I agree with you, that you should pre fill the filter if possible, so you get less air in the system to begin with.
Great video Dr sunka , Clear and precise . thank you from Ireland .
Thanx mate, more of these maintenance video's please!! Like, next video "how to refresh/change break fluid on an audi A6 C7" ?? :)
Well same as on any other car, there are many many videos how to bleed brakes, so I will not reinvent the wheel. Make sure that reservoir (master cylinder) does not run dry, otherwise you will need to bleed ABS system as well (ABS is bleed via VCDS basic settings). Pressure bleeder is very very recommended. Also 2 person pumping method, 1 person bottle method, vacuum pump, or gravity would work ok. Since these are not so safe, because you need to really be careful not to introduce air into the system, pressure bleeder is still the best. However, it is doable.
dr. sunka thanx for the extensive answer!
CAUTION if you don’t use the VAGCOM/VCDS to prime the fuel system after the filter change you can destroy the HPFS.
Correct
@WH ROBY High pressure fuel system
Need a video on this process as well...
@Dan123. Yes really. You could have just as easily sent an air bubble through to the HPFP, destroyed it and sent metal shards through the fuel line. That's upward of $7k to replace all the parts affected.
@Dan123. OMFG you shouldn't be allowed anywhere near a modern common rail diesel engine. You're going to cost someone a bunch of money. The CP3 HPFP in my car can deliver up to 29K PSI
best way to kill your HPFP. repleacment with cleaning of whole fuel system can cost up to 10k €. you should always bleed of the air via VCDS
Thank you for the video, very helpful. Please do keep posting videos. 👍
А ТНВД ничего не будет,если на сухую запускать???я слышал,что нужно через программу VCDS топливо насосом прокачать
You shoukd bleed it with Vcds because when you dont do it you can brick your high pressure pump and all other components
Great tutorial thank you 👍🏼
Hi eine kleine Frage ist deine hochdruckpumpe kaputt gegangen oder nicht 🤔
You can destroy high pressure pump like that, first run fuel pump to fill up the sistem and than start the car
You are the best! Thanks man
Thanks for the help bro
great video, very easy to follow
Excellent video, thank you so much for taking the time to post it
Thank You for video!!
it started quite hard. is it ok for the high pressure pump?
It's not okay for the high pressure pump, this is a costly mistake, you should bleed the system before attempting to start the engine
Super!
No servis, no money!
Does a 2017 Audi A6 Quattro Premium have a fuel filter at the same location?
Use hose clamp pliers on hose and use vcds to take the air out of the filter and just then fit the filter and take the clamps out of the tubes. That's so wrong how you did it...
Great detailed video 👍🏻👏🍻
Hello,
Why did you change the filter? Dealership claims it last the life of the car... which didn’t sound right since nothing last that long.
That's false, diesel filters should be replaced every 60k on this A6. Petrol filters should be fine for lifetime, but it is recommended to change them as well.
@@sunkazz I'm from India...My Audi A6 C7 vibrates when the engine is running...Do I need to change the Engine mounts? And Also My rear Air suspension doesn't work but there is suspension symbol showing on the Infotainment and mechanics told me to do complete coding to sort the issue..it will be great if you share Whatsapp number...I'll explain more in detail and kindly help me to sort out the issues
no filter ever lasts for life....although main dealers never seem to change any service items....although they do charge customers for doing them
tell me. this filter only changes for diesel cars?
Great. More videos pls. A link to buy a vcds? Roos tech or some fake chinese?
Ebay
You should have bleed the system with a V c d s
Nice
Is this a 2.0 tfsi
hi my friend, is it a diesel car the one you change the fuel filter?
He shows that in the first 5 seconds of the video.. See the fuel cap
U dont see car rpm? Haha
Pozdrav Koja je oznaka filtera, moj je A6 2.0 tdi 130kw motor , da li je isti?
4G0 127 401
When it's recommended change transmission oil on a6 like yours?
Every 60.000 km.
you should not run the car after you change the filter. you need to turn the car without running engine. it should stay like that 10 seconds. then you should run the engine. this because there is air after you change the filter. highly recommended !
Well think about it, what can air (that is air-fuel mixture = 1) do to an engine. It will just not start up until air-fuel is just about right. For running pumps dry, however, is another story.
@@sunkazz is the high pressure pump before or after the filter? 🤔
@@vlmxs It is in the fuel tank (so to say before the pump).
@@vlmxs the hpfp is located after the fuel filter. it's on the engine with the hard piped fuel lines as the pressure it produces is extremely high hence the name "high pressure fuel pump". This type of pressure would blow normal fuel lines and the fuel filter to pieces. It needs to be fully lubricated at all times by diesel otherwise you run the risk of damaging it. You should always prime the system with vcds or obd11 ect to prevent damage.
@@sunkazz the low pressure pump is in the tank, the high pressure pump is on the engine. The low pressure would naturally prime when you "key on" the ignition anyway
Do you think that remaping an audi TT on stage 1 is worth it?
How many kilometres does your A6 have? I have 98.000 and haven’t changed it yet
On A6 TDI it is recommended to change the fuel filter on every 60.000 km.
Poor car no prime pump
like like
Привет вы и по русской разговаривать можете
Я да😜
Говори по русски уже
May I asked why you felt the need of changing the fuel filter? Was it one of the following reasons:
1) You were getting bad gas mileages?
2) It been certain years passed and you never did that so decided to do it?
3) Like me, had this itch of messing around with perfectly working and funtion things?
Also what change you noticed? Did your miles per gallon increased? Please if you can share this information.
Just a regular service precaution (diesel engine every 60k).