[V8] fuel pressure, poor running

[Kneale Brownson]

This declining performance as the engine warms up sounds more like a sensor
starting to fail.  Either coolant temperature sensors or one of those
ignition reference/engine rpm sensors.


At 09:11 PM 4/23/2006 -0700, Jeremy Ward wrote:
>A friend of ours in Moscow is having some strange problems with his V8.  If
>he has a full tank of gas and the motor is cool, he is able to drive the car
>with a decent amount of power, up to 6500rpm.  Once warmed up, the max rpm
>is 5000.  Also, the less gas he has in the tank, the poorer his power output
>is.  If I understand his email correctly, power in 1st gear in fine up to
>2500 - 3000 rpm, but starts to stutter at around 3500rpm.
>
> 
>
>Fuel pressure drops as the engine warms up.  Fuel pump is new.  Fuel filter
>is new.  The gas tank has been 'washed out' twice (not sure what process was
>done here).  No change in performance when driven with the fuel cap removed.
>And the kicker - No codes are being thrown.
>
> 
>
>Those of you that have replaced gas tanks due to 'holier-than-thou'
>attitudes, what were the symptoms (other than fuel leakage)?  Having seen
>the pictures of the restoration of his V8, I know he had a little bit of
>rust.  I know fuel pressure regulator doesn't throw a code, but I can't
>imagine it being effected as described.
>
> 
>
>Here are the photos (and English translations thanks to Babelfish) of his
>restoration:
>
>http://babelfish.altavista.com/babelfish/trurl_pagecontent?lp=ru_en
><http://babelfish.altavista.com/babelfish/trurl_pagecontent?lp=ru_en&trurl=
h>ttp%3a%2f%2faudiv8.ru%2fforum%2fviewtopic.php%3ft%3d470%26sid%3dce47de72a6a9
>34a25796550a1b22820c>
>&trurl=http%3a%2f%2faudiv8.ru%2fforum%2fviewtopic.php%3ft%3d470%26sid%3dce47
>de72a6a934a25796550a1b22820c 
>
> 
>
>Thanks in advance for your help with Dmitry's problem,
>
> 
>
>- Jeremy
>
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