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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

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 April 14th, 2012, 00:11   #16
Dieselmad
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Join Date: Sep 2011
Location: Fochville, South Africa
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Quote:
Originally Posted by jonahkuzma View Post
I am wondering about your list of maybe's:
2) If bad head gasket...does oil actually leak (like you see it on the garage floor) or just burn?
3) How do you check if rings are bad WITHOUT pulling head?
4) How do you check CCV and where is this on a 2003 Jetta
5) How do you know if your cat is blocked
6) How do you know if valve guides, stems and seals are bad? Again--do you have to pop head?

Thanks much!
2) Head gasket can leak in many ways. Oil can leak out on the floor or it can leak into the water system or it can leak into the cylinder and burn. Same with water.
3) Oil rings can only be checked by taking the piston out. Take out glow plugs and see if there is allot of carbon built up. If it is only one cylinder with a bad oil ring then you should be able to see the carbon difference on the gp.
4) CCV is the breather pipes running from the block to the head. Normally its that one way valve on the top right hand side of the head(round black plastic thingy) that gets chocked up.
5) If the cat block then the turbo spool up is not so responsive as what it was and your car wont pull as good as what it was. Difficult to know if it is definitively blocked or not. Best would be to do a cat removal.
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Old April 14th, 2012, 06:42   #17
jonahkuzma
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Thanks for the explanations. My CCV puck unit looks pretty oily and actually, so does the big rubber inlet pipe that runs into the manifold. We cleaned that whole thing out when we put my new turbo in. Could it already be getting caked in there again, restricting air after only 1 year? Especially if I have been burning LOTS of oil for the past year?
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Old April 14th, 2012, 10:33   #18
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Quote:
Originally Posted by jonahkuzma View Post
Thanks for the explanations. My CCV puck unit looks pretty oily and actually, so does the big rubber inlet pipe that runs into the manifold. We cleaned that whole thing out when we put my new turbo in. Could it already be getting caked in there again, restricting air after only 1 year? Especially if I have been burning LOTS of oil for the past year?
Read post #3 again.
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Old May 23rd, 2012, 09:08   #19
StillGed
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Thanks for all the help.... Just for an update, compression on #2 was low, so I wound up getting the piston rings replaced. #2 was actually broken in half! No wonder I was burning so much oil.

New rings, new seals, now the car is running great!
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Old May 23rd, 2012, 09:18   #20
runonbeer
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6) worn out valve guides, stems and seals.

This sounds like rings though.
Boom! Wouldn't have expected a fully broken one though.
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Old May 23rd, 2012, 09:26   #21
turbocharged798
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Been dealing with a oil consumption issue with the 99.5 for years now. It burns through a quart per 3-5K miles which is neither good nor bad. Compression was very high across all four(600psi) so I think the oil rings aren't sealing like they should and is causing higher than normal compression readings.

Been keeping an eye on it and I'll probably pull it apart if it gets more than a quart per 3K miles. Rotella T6 is cheap so it hardly worth the effort right now.
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Old November 30th, 2013, 23:34   #22
kwong7
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I'm having a disappearing oil issue in my 01 Golf with 258K miles. It's been 8K since my last oil change. Earlier this week, I checked my oil dipstick and noticed that it was on the low side so I added about 8 oz of Rotella T6 to get the oil to register in the middle of the high-low range. 3 days and 300 miles later, I'm driving home and decide to do an italian-tune up from 65mph-75mph in 5th gear at about 80% throttle. I see a little cloud of gray smoke in the rear-view and my car feels like it's a little smoother.

8 miles later, I turned onto my street and I noticed an unfamiliar sound that matches my engine revolutions. The engine starts to feel a little tired and runs little on the rough side. I coast home and check the dipstick, it was just below the minimum indicator. I added another 8 oz of oil and I'll check back tomorrow. I'd also note that when I got out of the car, there was an odor of exhaust and burnt coolant that I found curious. Everything else looked fine under the hood, but I might need to get a VW specialist to take a look.
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Old December 2nd, 2013, 11:17   #23
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I realize this is probably too late, but if you 'lost' that much oil in that amount of time I wouldn't start it until you can verify the intercooler isn't full of oil.
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