Fuel Pressure Gauge

[bc...@juno.com]

Agreed, I would not run gauge lines with gasoline, a mechanical
gauge will wear out and possibly start leaking. The electronic version
I use here is an earlier version of Camerons, paid a little less on Evil Bay.

These readouts are all the same, except for the face scale. I could not
find a 0-15, so I use a 0-150psi and mentally move the decimal. This
type supplies the 5V the sensor needs, but will not work below 10V
input battery (as when you are cranking).

There are a lot of spikes in pressure, not sure this electronic sensor
will never wear out, but it should never leak. The gauge it is paired
with deals with the variations, an electronic signal would need some
sort of averaging.

Bruce Roe
++++++++++++++++++++++++++++++++++++++++++++++++++++
From: Cameron <cbi...@gmail.com>
To:gmcm...@googlegroups.com 4 Sep 24

Thanks Bruce,

I was thinking of something like this;

https://www.maxtow.com/black-green-maxtow-15-psi-fuel-pressure-gauge/?srsltid=AfmBOor0Z9pS
3-xqfuHDYX0_dxBfmPRh1hALCoA4pZ_RFh7Fhj8-OCUQ

essentially the same sort of setup for sensor from the fuel line, but
to a gauge, instead of the ebl. still a bad idea?

Cameron
++++++++++++++++++++++++++++++++++++++++++++++++++++
From: BruceHislop <bhis...@gmail.com>
To:gmcm...@googlegroups.com 4 Sep 24

I would not use a gauge as a permanent fixture for monitoring fuel
pressure unless there is a snubber in series with it. The fuel pressure
is not smooth but rather pulses with the injectors opening and closing.
This causes fatigue to the gauges internal tubing used to measure the
pressure and it will eventually fail. Also the gauge will soon not return
to zero due to the fatigue.

Even fluid damped gauges do not stand up to the pulses. I believe you
should be able to do a search for this info on
gmcmotorhome.org in the GMCNet archives.

Bruce Hislop

[Paul Ferrigno Jr]

I've got one of those 0-30psi senders off ebay.  Probably bought it 3 years ago, finally have everything installed now.  It worked great!  For about two trips...
I stopped getting data last night.  I've yet to see what the cause is.  Maybe I need to get one with more headroom on the full scale range?  Perhaps it wasn't a fan of the pressure spikes. 

[Bill Van Vlack]

You can use WinLog to run a log on the ADC point. (Device Configuration>pull down devices>select device>Settings>check "Log this field"   -  you need to set each device that you want to have logged)

--
You received this message because you are subscribed to the Google Groups "GMCMH EFI" group.
To unsubscribe from this group and stop receiving emails from it, send an email to gmcmh-efi+...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/gmcmh-efi/b966db5a-a63c-43da-829a-ce9582837d6en%40googlegroups.com.

[Cameron]

hey Bill,

trying to follow your directions and doing something wrong - i'm sure.
here is what I see;

I click add and the select device pops up. then I see the list in the
screen print. are you saying to log the ebl?

thanks!
Cameron

> To view this discussion on the web visit https://groups.google.com/d/msgid/gmcmh-efi/CA%2BX-fMc44ZThHMYh%3DfYhxZVbEF7yBHZYn5mN_%3D4_yB9rCWBcvQ%40mail.gmail.com.

[Cameron]

sorry, think I see it now. log the ebl then log the ad channel the
fps is connected to?

thanks!

[Bill Van Vlack]

That's it. Check the 'Log this field' for all fields you want to log, one-by-one. I checked them all, and WL has no problem with it. You can actually combine the WUD csv file and WL log file into one excel file, label it a 'txt' file, and you can plot them all on WinLog view. In the WUD file. Change all "Y"s to "1" and :"N"s to "0", and re-label the first "Cl" column to "CLp" to designate Closed Loop.

To view this discussion on the web visit https://groups.google.com/d/msgid/gmcmh-efi/CAMM5UnhpQdLi8yS3MzXvG5oFBDQw4f%3DTAp8zj-MjwvKFYCW65Q%40mail.gmail.com.