[urq] URQ quirqiness

[ur.quattro]

Dennis
sorry to hear that, probably a head gasket failure between cyl 4+5, possibly 
caused by detonation, sent me a picture of the head gasket and a close up of 
the failed area between 4+5 and I can tell you the cause. Best, Bill
----- Original Message ----- 
From: <DGraber460 at aol.com>
To: <urq at audifans.com>
Cc: <quattro at audifans.com>
Sent: Friday, April 28, 2006 5:29 PM
Subject: [urq] URQ quirqiness


>I now believe I have a car that is demon-possessed. Nothing else makes 
>sense.
> The "quirqiness" issue I had thought I had solved. Early in that saga, I 
> had
> suspected silicone vapors from some lube I had used on the charge hoses 
> was
> messing with the O2 sensors. After trying everything else I took all the
> charge hoses off- cleaned them with gasoline and reinstalled. The "quirqy" 
> duty
> cycle issue appeared to be gone for the last 2 weeks. Ran fine no  issues 
> or
> problems. I was truly enjoying the car again.
> Then today about 2 miles from home it drops a cylinder. No noise, no 
> fanfare
> just starts running poorly. I get it home, and it idles but very rough. 
> Shut
> it off and pull the plugs thinking I will find a black one. No such luck. 
> #4
> & 5 are slightly more of a battleship gray than the first 3 which appear
> normal. Very odd. Pull the compression gauge out and to my horror #4 & 5 
> don't
> even bounce the gauge. NOTHING! Pull the valve cover thinking I must have
> broken valve springs. Nope. They look normal. Timing marks all look to be 
> fine.
> Looking into the bores they appear to be OK. No valve train parts or 
> anything
> out of the ordinary, and the valves appear to be straight as they open and
> show  themselves at the spark plug hole. The oil is clean, up to full and 
> with no
> apparent grit or other issues.
> What the hell is going on here? Even a blown head gasket between cylinders
> (or elsewhere)would make the gauge at least bounce. If it bent the valves, 
> how
> the hell did it hit them? Broken rings etc. would also still register
> something.
> This happened just driving along at about 50 MPH, and I have not pushed 
> the
> car hard at all for some time.
> Somebody just shoot me and get me out of this nightmare.
>
> Dennis
> Denver
>
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