Full Guide on Inspecting and removing the HPFP and Cam Follower on my Audi A4 B8 2.0T
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- Опубликовано: 30 сен 2024
- The Cam Followers are not Bullet Proof and they can go bad any moment! I am having a fuel smell in my Oil System, so I think it is about time for me to dig into the HPFP (high Pressure Fuel Pump) and see just how damaged my cam follower is!
Tools and Products I used:
Panel Remover
M9 Spline Socket
Pliers
Q20 / WD40
Ratchet + Extension
17 Spanner
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Due to factors beyond the control of Sabertooth Performance, I cannot guarantee against improper use or unauthorized modifications of this information. Sabertooth Performance assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Sabertooth Performance recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Sabertooth Performance, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Sabertooth Performance.
PLEASE CHECK THE SPLINE SIZE - MINE IS DEFINITELY M10, NOT M9 AS YOU SAY. M9 IS A SLOPPY FIT AND MIGHT DAMAGE THE BOLTS!!!!!!!! 2011 A4 B8 2.0 TFSI
It has been a while back so I can not remember if the M9 was sloppy or not, but glad you made sure and saw it... Thanks for adding 💪
best tutorial on replacement of HPFP on youtube! Well done!
Ahhhh thank you 😊 it is so nice to hear these things 🙏 I am glad to know that my Tutorial helps people out there 😊
Thanks for the informative video, this made changing out the HPFP a piece of cake! I probably would not have inspected the cam follower as well if I didn't see this video, which is a must if you are going through the work of replacing the fuel pump. Thanks again!
Thanks so much for the positive feedback! Glad to see my videos are helping a few people out there.
Yea the cam follower is the most important thing on our models and can be easily overlooked. They are usually the ones that goes bad. If the cam follower is fine then it is the pump usually :)
i had a few petrol vw/audi engines and with all of them you could smell the petrol in the oil filler cap, might just be blow-by or maybe all my the cars i owned had a problem. Had an engine with 23k KM and had the same smell
There is a few things that can add fuel to your oil, such as when driving you don't drive far distances, usually small trips to the shop and home or to work and back (for exp. 10km there and 10km back when traveling)
The heat of the oil will actually evaporate the fuel and the pressure will be pushed out of the PCV. (so not driving far will not give the fuel enough time to evaporate and it will slowly increase the fuel level in the oil over time.)
The biggest factor of getting fuel in your oil is Cold Starts. it is because a lot of Fuel is added to the combustion so that the Catalytic converter and Engine can heat up a bit faster. So it is normal for cars to have some fuel in their engine oil but to much can dilute the oil and the Lubrication purposes of the oil will break down and will no longer be so good as it should.
@@megalodononwheels yup, the thing is i never driven less then 30km (usually 50km in one way) the coolant got up to temperature in about 5km, sadly none of my cars had the option to show oil temp but im guessing after another 10km the oil was pretty much as hot as it gets. Even in the summer when i got home from work the engine would be very hot but still had fuel smell from the oil. I guess i was just that lucky that all my cars maybe had quite a big piston ring gap so fuel could get trough the rings and into the crankcase or my injectors were f'd. I changed my sparkplugs every 20k, idk maybe just my luck, but never had a problem of excessive wear on the bearings or anything like that
is the Cam lobe that was pushing the HPFP out always going to do that? I mean, I saw a few people on youtube replace their HPFP without the need to rotate the crank. I wonder what causes one to need to do that and other times not? Curious. And nervous as this might deter me from changing my HPFP. I did not expect the need to rotate the crank to align the crank lobe.
Thanks for the video and close in shots!
Don't be to afraid of turning the crank 😊 it is pretty easy, just the space is so limited 🤕 nothing to worry about.
On the camshaft there is a lobe that rotates, as it rotates it pushes the HPFP spring in and out, this movement is how the HPFP builds up pressure.
So there is a chance that the lobe might be on the position where it pushes the HPFP spring in, so when you try to put the HPFP back after you removed it. You will struggle as now you need to compress the spring to get the bolts back in. But that is where you turn the crank sothat the cams can turn and then the lobe will move out of the way so that the HPFP spring does not need compression to go back and that will make the installation super easy and risk free of cross threading a bolt or something.
To make you feel better, I would say by the look of the lobe size, you will only have a possibility of landing on it about 1 out of 4 times. So there is a higher possibility to not land on it I would say 🥳
@@megalodononwheels thanks
Do you know low side fuel pressure spec?
Unfortunately I am not sure but it is low. If you Log you LPFP, you must log the Actual and Set Point... It will show how much it should be and how much it is 🙌
Was this removal to only check your cam follower? Were there any issues with the HPFP?
I was doing an inspection as the cam follower wears out, there is the out dated one and then the updated cam follower, when i removed mine I saw its the updated cam follower :) but otherwise nothing was wrong with it. I cant remember why I decided to remove it 🤣