[Vwdiesel] Vwdiesel Digest, Vol 83, Issue 49

[brian gochnauer]

 >> I could also catch a fingernail when dragging across side of lobe toward
tip

imho, it's trashed.

I just did my '04 Jetta TDI, ALL the cam lobes were quite smooth; even
though it had worn a FULL 1/4" off of one intake lobe!!

Lumping idle or shaking throttle response are great signs.

BrianG
Iowa



Date: Mon, 27 Sep 2010 20:46:09 -0700
From: Shawn Wright <vwdiesels at gmail.com>
Subject: Re: [Vwdiesel] Signs of PD worn cam syndrome?
To: vwdiesel at vwfans.com
Message-ID:
       <AANLkTik_j45iBqfGQE9bE=+mq3AMcuP1SAEDUm=WzrFQ at mail.gmail.com>
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Ok, here's the update (2004 Jetta TDI GLS with 190k kms). Got the car home
tonight, and pulled the VC. The valve thingy* on the intake which I had to
remove to get the VC off showed a fair bit of soot in the intake, some
loose, some not so loose. The hose from IC to intake also appeared to be
leaking and wiggled a bit in the circlips, a fair bit of oil below that and
some on upper TB cover. TB looked somewhat worn, said VW so probably OEM,
but could be original with 190K kms, or changed at 160K, so must assume it
needs doing. Cam lobes looked even all across, so I didn't bother rotating
engine, just inspected best I could. Although I could still see chamfer on
lobes I could reach, I could also catch a fingernail when dragging across
side of lobe toward tip, so could indicate some wear, but really hard to
tell. Engine sounds could except there is a slight lumpiness at idle on
occasion, and what sounds like an occasional soft popping noise. The engine
cranks longer than it should when starting, hot or cold - up to 2secs, not
sure what this means on a PD.