RE: [DML] Fuel pressures

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

The fuel before going to the injectors has to go thru the fuel distributor.
The control plunger has to rise an fall which is what determines how much
and when the fuel goes to the injectors. Vacuum is a big problem with the
CIS system and if you adjust to it,then the problem is compounded. We had a
distributor the other day that due to high pressure ruptured the Stainless
Steel diaphragm and caused a sever flooding problem.
John Hervey
www.specialtauto.com


-----Original Message-----
From: Jeff Phillips [mailto:rvparty@xxxxxxxxx]
Sent: Tuesday, November 02, 2004 4:11 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Fuel pressures

I had a fun time at the mechanic today testing the fuel pressure
values of my car and expecting to find something seriously wrong.
Here are the results, I converted to lbs as the mechanic didn't have
a fuel gauge with "bar" on it:
                  measured (spec)
Control Pressure: 55lbs    (49-55)
Primary Pressure: 70lbs    (71-79)
Rest Pressure   : 43lbs    (47)
- 10 mins later : 39lbs    (24)

Everything here seems to look ok to me, if not a little high on the
control pressure and low on the primary.  Where should I start
looking to solve an extremely rich fuel mixture and a consitent
backfiring?  I've already adjusted the CO2 screw to the leanest that
it will run at. Thanks!

Jeff
#10544





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