Here is an example of a cam follower that had been punched through by the HPFP. Some of the signs that you may be having problems with cam follower wear are fuel cuts and poor performance when lots of fuel is being used. Design, oil consumption, oil type, performance software, Reversion “A” cam being soft, early version HPFP, are all factors in these speculations. There is a lot of speculation as to what causes this issue and how to prevent it. This can cause a very expensive repair bill to fix the cam, cam follower, and HPFP. The HPFP has been known to “drill” right through the cam follower right into the cam itself. ![]() High-Pressure Fuel Pump (HPFP), cam follower, and cam: Typically I add another 1qt between oil changes. Because of this I do my oil changes every 5K miles instead of the recommended 10k and check my oil level twice between oil changes. I have not gone to these extremes to check for this as my consumption is closer to 1qt every 3.5k miles. The other thing to do is install the latest rings, which seem to help with sealing better. The resolution is to check the pistons and cylinders to make sure they are still round and sealing correctly. In other words, they will only start to replace things under warranty if you are consuming more than 1qt of oil per 1000 miles. ![]() VW says you should change your oil every 10k miles but also says oil consumption less than 1qt every 1k miles is acceptable. The 2.0t engine has been known to consume a lot of oil in between oil changes. A good time is when you do your oil changes. You will need to empty the catch can every so often. This will catch the foreign contaminates in the PCV system before they get to the valves. To prevent buildup it is a good idea to install a catch can. You could try using a cleaning solution like Seafoam or BG Induction Cleaning that doesn’t require taking everything apart. This is a very time-consuming task or expensive if you have a shop to do it. If you already have buildup the best way to resolve it is to take it apart and clean it. But that is also a very vague sign that could be the result of a lot of things. Loss in performance is a sign that this might be happening. to the left is a picture of what valves can look like over time. ![]() This did an OK job but really only masked the issue and didn’t solve it well.īecause of the way the 2.0t FSI’s fuel injection works the gunk can build up over time on the valves by oil and junk flowing through the PCV system to the valves. This is the silicon tube with the billet check valve coming off of the front PCV valve in figure 1. Their solution was to add another check valve on top of the failure-prone one. Here is a link to BSH that offers a few PCV fixes BSHspeedshopīefore I got the BSH fix I had a different attempt by Eurojet. This kit also solves other issues which you will read about below. I purchased one of the BSH catch can kits which also includes one of these plates. The PCV block-off plate removes the front check valve entirely and replaces it with a machined plate thus eliminating the potential of its braking. The solution is to either replace the valve with the latest version and wait for it to break again or get a PCV block off plate. The rear PCV is actually inside a metal tube called the breather tube. The rear one is right below the MAF on the backside of the engine. ![]() If one of your PCV valves is to blame it is most likely your front PCV valve that has failed. This is also a symptom of a failed Diverter Valve (see below for more information). Symptoms of a failed PCV valve include loss of pressure (boost) in the PCV system. Over the years VAG (Volkswagen Automotive Group) has released countless updates to the PCV valves in this motor all of which still seem to fail over time, even with stock setups. Positive Crankcase Ventilation (PCV) system:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |