RE: [DMCForum] Fuel pressure values
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [DMCForum] Fuel pressure values



Rich,

The system pressure is a bit low, but not terrible.  What would be more
telling is a comparison of hot and cold values.

-Dave

-----Original Message-----
From: cruznmd [mailto:racuti1@xxxxxxxxxxxx]
Sent: Friday, April 23, 2004 11:34 PM
To: DMCForum@xxxxxxxxxxxxxxx
Subject: [DMCForum] Fuel pressure values


Ok, the pressure test rig reads the following values:

When the rig is installed with the T-valve towards the distributor, I
get the following pressures:

Valve open: 0 (zero) bars/psi.
Valve shut: 4 bars.

This didn't seem right to me, so I turned it around so that the T-
valve was towards the CPR. (John later confirmed this for me) With
the engine off, RPM relay jumpered I read the following values:

Valve open: 3.7 bars
Valve shut: 4.5 bars

Engine running (RPM relay installed normally), the following values:

Valve open: 3.7 bars
Valve shut: 4.6 bars

The manual states that the nominal values are:

Primary pressure:
   Checking pressure: 4.9-5.5 bars
   Setting pressure:  5.1-5.3 bars

Control pressure:
   Max: 3.5 bars
   Min: (when cold) 1.4ish bars
-------------------------------------------------------------------
Assuming that I had the rig set up right (I'm fairly confident), my
control pressure is a tad high, and main line is a tad low. Combined
with possibly dirty injectors could this account for such a dramatic
loss of power?
Oh, I discovered that my air filter is filthy already too. (9 months
old)

Am I making too much of the small variation in values?
To put this in perspective for my fellow Americans;

I have as much as 3 psi too much control pressure,
and anywhere from a 7.25-14.5 psi LOSS of main line pressure.
(1 bar= apprx. 14.5 psi) (Which primary pressure value do I
use? "Checking" or "Setting"?) See the fuel section of the workshop
manual.

What say you?

Rich A.
#5335





Yahoo! Groups Sponsor     

ADVERTISEMENT

<http://rd.yahoo.com/SIG=1290f3379/M=291630.4786521.5933964.1261774/D=groups
/S=1705126215:HM/EXP=1082864079/A=2072415/R=0/SIG=11thh7ako/*http://www.netf
lix.com/Default?mqso=60178432&partid=4786521> click here     

<http://us.adserver.yahoo.com/l?M=291630.4786521.5933964.1261774/D=groups/S=
:HM/A=2072415/rand=666556024>      


  _____ 

Yahoo! Groups Links


*      To visit your group on the web, go to:
http://groups.yahoo.com/group/DMCForum/
 

*      To unsubscribe from this group, send an email to:
DMCForum-unsubscribe@xxxxxxxxxxxxxxx
<mailto:DMCForum-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe>
 

*      Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
<http://docs.yahoo.com/info/terms/> .




[Non-text portions of this message have been removed]



Yahoo! Groups Links



Home Back to the Home of PROJECT VIXEN


Copyright 2006 ProjectVixen.com.  All rights reserved.

Opinions expressed in posts reflect the views of their respective authors.
DMCForum Mailing List Archive  DMCNews Mailing List Archive  DMC-UK Mailing List Archive