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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 September 18th, 2017, 10:41   #16
golfere
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Join Date: Jul 2017
Location: sacramento
TDI(s): 04 golf
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Quote:
Originally Posted by Franko6 View Post
There are two likely candidates for an engine speed clic under load. One would be an exhaust leak on one of the EGR pipes or exhaust manifold. The other is the lifter. If you don't address the exhaust leak, it will get worse until you find it.

But not so innocent for the cam issue...

If you have the 'tick of death' and it's a holed cam follower, and you don't address it, you already have a cam that will be sharp on the edges of the cam lobes, especially exhaust lobes (1,3,6 and 8). If the issue is not resolved, eventually you will get a dead miss at idle on the cylinder. At that point, you are removing the cylinder head to replace the valve, which has the valve stem mushroomed to unusable. It is better to make a preemptive strike and avoid removing the cylinder head for repairs.

Since you have not said you checked the cam, and it only takes about 1/2 hr, you should do so and report back.



The frequency does not change in regards to speed



Also: I checked any exhaust leaks as mentioned with a rag tightly held over the exhaust while engine running but no sounds whatsoever



I can check the cam and lifters - however the ticking is only under load and at idle the car sounds great at low and high RPM - plus its had a new cam from you Frank installed just this year and TB from you also


Im starting to think its a normal engine sound but i wanted to make sure im not careless and a problem occurs you know?
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Old September 19th, 2017, 12:15   #17
Franko6
 
Join Date: May 2005
Location: Sw Missouri
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This can get confusing, when I know some by their name, some by their email, some by TDIClub username...

When you say the frequency does not change in relation to engine speed, makes me puzzled. I am suspicious of the EGR valve, as we have had some strange noises emanate
from them and it can sound like a buzz or clicking on some occasions.
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Frank's VW TDI's, LLC
1007 Olive St.
Lockwood, MO 65682
417-232-4634
FranksTDIs@sbcglobal.net

'02 80k grey leather, 99.5 R.I.P 153k
'85A2 NA 375k, '91 A3 290k Always Silver, Always a Jetta
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Old September 19th, 2017, 18:35   #18
golfere
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Location: sacramento
TDI(s): 04 golf
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Until i get a chance to take the valve cover off to take photos; can i use VCDS to test the EGR valve also? I have to remove it anyways to get to the cam
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Old September 20th, 2017, 09:55   #19
Franko6
 
Join Date: May 2005
Location: Sw Missouri
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What we have often seen is the terrible design of the EGR valve, with it's plastic gear. It can strip and make a clicking or rattling noise. It also can make a funny buzz at startup.

I encourage you to remove the small torx screws that are in the ASV valve, which is the bigger culprit and examine that cover and you can investigate if the ASV is working ok. Also, we regularly clean the EGR valve, as it can stick open and cause a strange 'reversion' of boost pressure. The shaft for the EGR is steel, going through an aluminum housing that you add black, gunky carbonized grease to the works, it's a formula for sticking the EGR valve plate open.

When the valve is removed hold it up to a bright light and see if you can see daylight between the valve plate and it's seal area.

Good luck. PM me if you have additional questions.
__________________
Frank's VW TDI's, LLC
1007 Olive St.
Lockwood, MO 65682
417-232-4634
FranksTDIs@sbcglobal.net

'02 80k grey leather, 99.5 R.I.P 153k
'85A2 NA 375k, '91 A3 290k Always Silver, Always a Jetta
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