S6 "sputtering" puzzle
glenahan at vfemail.net
Sun Mar 11 20:26:38 EDT 2007
Fuel filter ( pressure OK, but volume under load limited)?
spark strength ( unrelated to all the previous woes)?
On Mar 11, 2007, at 6:26 PM, DGraber460 at aol.com wrote:
> My 95 URS6 has been demonstrating some strange behavior that I cannot
> Back in December my Inter-cooler sprung a leak. It was relatively easy
> find the problem with a pressure test and I replaced it thinking I had
> cured its
> About then we started to accumulate snow that finally stopped
> between 70-80 inches total. The roads were so packed and rough that we
> broke the
> oil pan on our A6 dropping on all the unavoidable holes etc.
> Anyway, now that the roads are passable I find the car still
> "sputters" at
> WOT and full boost. It doesn't buck or cut out it just sputters. If I
> it to maintain below 17 it pulls like a train. Go to WOT and 20 or
> above PSI
> and she sputters badly. Prior to all this it was running 27 full
> boost very
> I have pressure checked it twice with a stethoscope very methodically
> and it
> holds pressure even after I take the regulator off. It also blinks no
> Any usual culprits for such misbehavior?
> Any advice greatly appreciated.
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