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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

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Old August 25th, 2010, 08:55   #1
striker
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Default Symptoms of cam failure

Hey guys,

I'm looking at an extremely well maintained 06 that recently came on my lot I work at. The car has every dealer service stamp since day one showing the oil changes, DSG trans fluid flush, etc.

Is there ANYTHING at all that I can listen for when this thing is idling? I dont know much about diesels so I have no clue what's suppose to sound normal and whats out of whack.

Any advice? The car has 82K miles.
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Old August 25th, 2010, 08:57   #2
oilhammer
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You can take the valve cover off inside of 2 minutes and check.
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Old August 25th, 2010, 09:05   #3
striker
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Quote:
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You can take the valve cover off inside of 2 minutes and check.
Ok and what am I to look for? Anything in particular?
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Old August 25th, 2010, 09:08   #4
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Look carefully at the toe of the cam lobes (the 8 that work the valves, not the 4 fat ones that work the injector rockers). You may need to spray off the cam with some brake cleaner to get a good look. And rotate the engine around by hand from the crank sprocket clockwise to see them all. You will need a flashlight most likely.

Examine the lobes for wear on the tips, and a lack of chamfer. It will be pretty obvious when you see it. It may not be on all the lobes either. I have one cam here that looks perfect on 6 lobes, and 2 have wear.

Be sure to pour some oil over the cam and lifters before putting it back together if you sprayed it off.
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Old August 25th, 2010, 09:27   #5
striker
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Alright, will do. My old man is buying an 06 and this kinda scares me even tho I have receipts from the dealer showing every oil change.
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Old August 25th, 2010, 10:45   #6
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Every oil change done properly still doesn't mean it is okay. They still fail sometimes even if all maintenance was done properly. You should read through some of the cam threads here to find instructions/pictures.
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Old August 25th, 2010, 11:06   #7
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Yeah I understand. It is pretty bad to think that they allowed this to pass. I know for a fact that the car was serviced at VW since day one. Every filter, fluid change, even the DSG.
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Old August 25th, 2010, 18:00   #8
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It has been said the problem doesn't happen as often in Canada. No way to know if this is true either.
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Old August 25th, 2010, 18:09   #9
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It has been said the problem doesn't happen as often in Canada. No way to know if this is true either.
Some think it is heat related and the situation is manifested more in warmer areas.
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Old August 25th, 2010, 21:25   #10
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Quote:
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Some think it is heat related and the situation is manifested more in warmer areas.
It does seem that way...

Too bad we didn't know to use top level CJ-4 oils from the start.

Most if not all could have been saved.
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Old August 26th, 2010, 05:45   #11
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If heat is the issue, why not go with a lower temp thermostat?
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Old August 26th, 2010, 05:54   #12
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Quote:
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If heat is the issue, why not go with a lower temp thermostat?
Or a thicker oil? 15w-40 perhaps.

Everyone always says a TDI is very good at keeping itself cool, the cooling system is over engineered, but then we come up with concepts that its heat killing the cams down south.
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Old August 26th, 2010, 05:57   #13
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Or a thicker oil? 15w-40 perhaps.

Everyone always says a TDI is very good at keeping itself cool, the cooling system is over engineered, but then we come up with concepts that its heat killing the cams down south.
Who makes a 15w40 for our cars? I've only seen 5w40. I don't think it will hurt much to go with 180 thermostat. I've installed a Kenne Bell supercharger for an 01 mustang before and I think they supplied a 180 thermostat. Ran fine.
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Old August 26th, 2010, 06:00   #14
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Quote:
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Who makes a 15w40 for our cars? I've only seen 5w40. I don't think it will hurt much to go with 180 thermostat. I've installed a Kenne Bell supercharger for an 01 mustang before and I think they supplied a 180 thermostat. Ran fine.

And I am using API CJ-4 diesel truck oil in both my cars. Cars run fine.
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Old August 26th, 2010, 06:17   #15
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And I am using API CJ-4 diesel truck oil in both my cars. Cars run fine.
Oh boy, be prepared to get blasted...that is sacrilege around here.

I am using Valvoline's 5W-30 505.01 rated SynPower oil, and I don't appear to have any CAM wear, but I am going to look again tomorrow.

Valvoline has a 5W-40 that is supposedly 505.01 rated also.

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