PDA

View Full Version : pressure drop


12vcummins96
03-16-2013, 09:02 PM
i have an airdog 2 165
at wot i see almost 30 psi drop in pressure is there anything i can do to fix this
plus i have replaced 3 pumps
voltage at the pump is 13.7

RyanH
03-16-2013, 09:19 PM
What was the reason for going thru 3 pumps? With that kind of psi drop i would assume your getting a clog in the tank that is killing volume.

12vcummins96
03-16-2013, 10:58 PM
the pressure would drop off of all three of them and then the motors would quit
ive checked my drawstraw in the sending unit is clear of any obstructions
ive been thinking of getting a sump to see if that helps

12vCumminsFTW
03-16-2013, 11:39 PM
I have a 165 too and it drops pressure more than I would like. I am on my second motor also. watching this.

RyanH
03-17-2013, 12:16 AM
I would look into a torktec or regulator.

12vcummins96
03-17-2013, 03:29 AM
I would look into a torktec or regulator.

I've used both and still the same issue
I'm still using my aeromotive regulator with the same results

cumminsman315
03-17-2013, 11:27 AM
I don't know what all you have done to your truck but it sounds like your to the point of needing more fuel than the airdog can handle, hence the pressure drop...

inline
03-17-2013, 02:25 PM
are the regulators you are using a boost reference style? pressure check before regulator or after? is the air dog at max pressure set up?

dixon700
03-17-2013, 05:54 PM
Mine drops from about 23-24 down to 10 or less. Even just cruising down the highway at 74 it can't keep it above 20psi. I'm on my original ad motor, but I think there is something wrong with it. Valair has a similar truck to mine with jus slightly larger inj. And his pump holds 25psi at idle drops no lower than 20psi at idle and his starts recovering. If I'm in the throttle only thing it will do is drop. I'm going tof email pure flow. I pmed Kyle at airdog to no response...

12vcummins96
03-17-2013, 06:36 PM
I don't know what all you have done to your truck but it sounds like your to the point of needing more fuel than the airdog can handle, hence the pressure drop...


my setup is
180 pump no plate 5k gsk smokem special dvs rack plug 5x14s
compounded with a 63/68 over a hx60

dixon700
03-18-2013, 07:57 PM
Emailed airdog directly and they said its my stock canister restricting the flow...

12vcummins96
03-19-2013, 10:02 AM
so i guess i will be looking into getting a sump

dixon700
03-20-2013, 01:10 AM
Idk if bypassing my stock canister filter will fix this big pressure drop. I'm going to try it this summer.

johnfak
08-19-2013, 06:08 PM
thought there was a spring mod you could do ..... at least on the older unit - AD100 etc

Lostnwalmart
08-19-2013, 06:30 PM
I gave up on my airdog 165. Sump fed and regulated post pump. Still had huge pressure drops, have gone to an a1000 and 0 issues. Rock steady pressure at 45 now more if I want.

B N S slammer
08-19-2013, 08:22 PM
Idk if bypassing my stock canister filter will fix this big pressure drop. I'm going to try it this summer.

I bypassed mine and nothing changed, still had the pressure drop issue..

Valair1
08-22-2013, 05:45 PM
They had a problem with the seal between the pump and motor, if you pull the motor off and its wet inside, then thats probably the issue. Mine is set at 27 and doesn't drop below 23 at WOT, I have a 10mm cp3 and 200 hp sticks running a df165

DieselheaD
08-22-2013, 08:49 PM
I have the same pump set up as the OP and currently smaller injectors. Im running a airdog II 200 fed by a sump and a 60 hp torktek return. It drops 2-4 psi from 35-60 at idle. Did the same thing with 5x20.

Valair1
08-23-2013, 06:11 AM
And I am running stock canister with a draw straw.

JIT
09-23-2013, 10:45 AM
I'm seeing the same pressure drop from 50psi down to 30 with my AD165. I am using a fuel sump and Tork Tek OFV. Time for a better pump! Looking towards an A1000 with regulated return.

Opinions Vary
02-12-2014, 03:42 PM
Im thinking about switching to a DTT Assassin for my 24v. Anyone have any experience with these? On my 4th airdog and not enjoying the lack of pressure.