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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old August 24th, 2018, 15:55   #1
homeworld8118
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Default Cam wear only on one cylinder?

I pulled the valve cover on my 04 TDI BEW to check cam wear today. Everything looked fine, still has good profile and no scoring, except on one cylinder. The pully side cylinder. Even has a little bur on either side. Any ideas why only this one would be the issue?
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Old August 24th, 2018, 16:02   #2
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https://drive.google.com/open?id=1rJ...0IBJgA7w-oMHbO
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Old August 25th, 2018, 06:42   #3
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It is the first to go.
It only takes one to spoil the party.
How many miles on the car?
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Old August 25th, 2018, 09:22   #4
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Quote:
Originally Posted by homeworld8118 View Post
I pulled the valve cover on my 04 TDI BEW to check cam wear today. Everything looked fine, still has good profile and no scoring, except on one cylinder. The pully side cylinder. Even has a little bur on either side. Any ideas why only this one would be the issue?

What kind of oil are you using ?
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Old August 26th, 2018, 03:06   #5
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Probably motor oil............. Just so people know. VW dealers do not even sell the correct oil for PD motors. The correct spec is VW 505.01 5W-40. Dealers only sell VW 505.01 oil in 5W-30. The right spec but the wrong weight. But why would VW care? They don't. You are out of warranty, so you can just go eff yourself.

One bad lobe, game called. Replace the cam and lifters.
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Old August 30th, 2018, 23:38   #6
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The car has 172k on it. The P.O. wasnít a mechanical kinda guy, but took it to a TDI shop that supposedly use the right oil. I am doing the first oil change this weekend with Rotela T6.
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Old August 31st, 2018, 06:30   #7
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If I recall correctly (I own an ALH) T6 is NOT the correct oil for the PD engines; it does not meet spec. It is an excellent oil for the ALH however (and I've used it for 240k trouble-free miles.)
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Old August 31st, 2018, 09:13   #8
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If I recall correctly (I own an ALH) T6 is NOT the correct oil for the PD engines; it does not meet spec. It is an excellent oil for the ALH however (and I've used it for 240k trouble-free miles.)

A lot, but not all, of the BEW engines seem to do OK with T6 but the BRMs that Ive worked on seem to barely make it to the second timing belt change without serious cam issues...even when using a 505.1 5W40.

A lot of owners trusted the VW dealers to change the oil properly but it usually winds up being that they put in 505.1 5W30...and like it was mentioned, why would VW care if the engine wears out after the warranty period?
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Old August 31st, 2018, 09:31   #9
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Well, yea, dealers. Some were using blends, even seen this with the Honda folks, when observing service noted dealership uses valvoline or some other less expensive product.
But that's moot now. Maybe evaluate the possible cause of the wear as you refresh parts. If you can get member Franko6 to advise, you'll be way ahead. I have 0 experience (just a lot of reading) with this type repair.
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Old August 31st, 2018, 18:56   #10
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Thanks all for the info. Iíll keep posting when I get to the cam swap job.


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Old September 1st, 2018, 08:32   #11
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Not a big deal. Do the timing belt with the cam. Cam only adds an hour or two to the Tb change. Done a few myself. Get Frank's bolt and bearing kit at a minimum. His cam is good too but cost is higher then a stock one. I have one of his cams and did a couple stock cams.

Depending on how much metal was sent through your oil pump consider changing the pump as it can score it up and lost pressure. Filter is after the pump.

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Old September 3rd, 2018, 05:26   #12
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Most people including myself use T6 and have oil related failures. I have 190,000 miles on Mine and the UOA always come back great. Just because Shell did not go through all the certifications to obtain the VW rating, doesn’t mean it’s not good for your motor
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Old September 3rd, 2018, 05:26   #13
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Most people including myself use T6 and have oil related failures. I have 190,000 miles on Mine and the UOA always come back great. Just because Shell did not go through all the certifications to obtain the VW rating, doesnít mean itís not good for your motor
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Old September 3rd, 2018, 10:47   #14
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Quote:
Originally Posted by 2005TDI_1994IDI View Post
Most people including myself use T6 and have oil related failures. I have 190,000 miles on Mine and the UOA always come back great. Just because Shell did not go through all the certifications to obtain the VW rating, doesnít mean itís not good for your motor

Is that really what you meant to say?
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Old September 3rd, 2018, 18:56   #15
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T6 is ok, I add the zinc additive that was taken out due to the cat plugging. but I have had no issues, even use it in my Duramax. hi end oil always had a bit more than the cheaper ones, and get mot mileage to change, worked for years as HD and used Cat sampling on lots of equip, we could tell the cheap oil guys.
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