re. [urq] Rod Knock?

[Pasqualoni, James E]

Is your boost gauge working properly/idling normally?  I recently blew the
hose from the IM to the ECU, and the result was timing that was wayy
advanced, causing pinging similar to how yours sounds.

HTH,
Jim

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of Ben Swann
Sent: Thursday, May 19, 2005 10:19 PM
To: fdekat at sentex.net
Cc: urq at audifans.com; quattro at audifans.com
Subject: re. [urq] Rod Knock?


It sounds like you have too much advance - for some reason the engine has
started detonating.  I don't know how this might happen, as the timing is
set by the ECU and the hall sensor is either in window (OK) or not (car
won't run).

Maybe, the timing belt has slipped. in which case this might be the exact
symptom and you are actually lucky for the warning sign of impending doom.

So I'd start by checking the timing belt is OK/NotOK and averything that
falls out Crank Pully, Cam Sprocket and distributor are where they should be
with respect to each other.

You can do a T-Belt job in under a day and still make it to the show!  Let
us know what you find.

Ben

[Date: Thu, 19 May 2005 09:58:58 +0000
From: "fdekat" <fdekat at sentex.net>
Subject: [urq] Rod Knock?
To: urq at audifans.com
Message-ID: <200505191358.j4JDwwX0011143 at smarthost1.sentex.ca>
Content-Type: text/plain; charset=iso-8859-1

Looks like one less urq at Carlisle..!

So here I am last night, zipping down the highway on the way to my friend's
shop, to replace a broken subframe bolt. (That broke, when I was checking
the tightness of the subframe bolts, trying to find the 'creaking noise'
that I heard occasionally).

I hear a funny noise, so I back off. Stand on it again, noise comes back.
Ohoh! Not good!  Pull over, and pop the hood. Sounds OK idling, but maybe a
bit more 'lumpy' than normal. Give the throttle a quick crack, and a nasty
noise!

Sounds like the man with hammers is beatinig on the pistons. Very 'sharp'
metallic sound, similar to the 'pinging' sound you get when running WAY too
much advance.  Except this is happening just by giving the throttle a good
crack..

Drove it home very carefully. Noise would only happen under load, and seemed
to 'kind of, sort of' miss at the same time. Wouldn't take much load to get
this to happen.

However, at light load and more rev's, no noise.

I'm at a bit of a loss to figure this one out.
I'm thinking if it's a rod end, I'd be LESS likely to hear the noise under
load, and more likely to hear it as the motor is on overun. BUt then,
anything is possible, right?

I'm also wondering about the possiblilty that the ECU has gone wonky, and it
IS a case of massive advance?

When I get home tonight, I'll be checking with the timing light, and maybe
the 'pull one plug at a time' teast, to see if it's one cylnder doing this
(Which is what it sounds like).

Or maybe it's something stupid, like the flywheel coming loose? Anyone ever
have that happen? From the general condition of the urq when I got it, I'd
beleive ANYTHING is possible..!

So, If you have any ideas let me know. IF it's not an easy fix, it's the
4000q to Carlisle. Not as much fun, but way more reliable!

Rgards,

=Frank de Kat=]

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