What are acceptable lift pump pressures????

I rigged up a temporray setup just to check on the health of my LP and got the following.

13 at idle

10 cruise 60-65 MPH

8 WOT


What do you all think?

 

I personally wouldn't want to go much lower than that at WOT.

Dodge however thinks that as long as fuel is flowing everything is working.
So, 1 psi at WOT is good in their book, however wrong they may be.


phox

 

As I understand it, 8 is OK at WOT. Not as much as I would like to see, but still " acceptable " have to love that word.

My LP puts out 17 at idle, and 11 at WOT under loaded conditions. ( non-scientific, but very real 9000 lb trailer )

Unfortunately my IP is currently taking a dump.

I do believe that the pressure tests have been set aside, and a flow test is now being used to verify LP health and vitality. Although this might work in the shop of the " ideal world trucking company" non restricted flow means nothing, if you add some restriction and it cannot build pressure.

Just my $0.02

 

I hear ya..

One other thing, I just realised that I meaured PRE FILTER I'm going to have to hook it back up tommorow and try it post to see how much difference there is. I think I should just pick up a new LP and slap it on there for good measure. I thought I had heard guys say on here that 8 was near a minnimum at WOT. I'm just looking for verrification. I've never changed the LP.

 

LP is easy to change, I usually pop the fuel filter housing out of the way to do it. Takes 20 minutes to 1/2 hour for the most part, including cleanup.

It's one of those wake up in the AM, grab a coffee, and do it before you wake up jobs. Easier to take.

Have fun with it.