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03-16-2013, 08:02 PM
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#1
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Name: 12vcummins96
Title: lovin those huffers
Status: Not Here
Join Date: Jan 2010
Location: Pearland
Member`s Gallery
Posts: 284
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pressure drop
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
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96 12v eclb drw compounded
94 12v scsb prostock under construction
73 volksrod
51 chevy truck ratrod
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03-16-2013, 08:19 PM
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#2
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Name: RyanH
Title: Diesel Pro
Status: Not Here
Join Date: Jan 2013
Location: Grand junction
Member`s Gallery
Posts: 208
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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.
__________________
9812v qcsb
GT-55
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03-16-2013, 09:58 PM
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#3
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Name: 12vcummins96
Title: lovin those huffers
Status: Not Here
Join Date: Jan 2010
Location: Pearland
Member`s Gallery
Posts: 284
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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
__________________
96 12v eclb drw compounded
94 12v scsb prostock under construction
73 volksrod
51 chevy truck ratrod
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03-16-2013, 10:39 PM
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#4
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Name: 12vCumminsFTW
Title: Too Much Time
Status: Not Here
Join Date: Dec 2010
Location: Willcox, AZ
Member`s Gallery
Posts: 1,377
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I have a 165 too and it drops pressure more than I would like. I am on my second motor also. watching this.
__________________
-Aaron H.
97 12v 4x4
Last edited by 12vCumminsFTW; 03-16-2013 at 10:41 PM.
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03-16-2013, 11:16 PM
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#5
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Name: RyanH
Title: Diesel Pro
Status: Not Here
Join Date: Jan 2013
Location: Grand junction
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Posts: 208
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I would look into a torktec or regulator.
__________________
9812v qcsb
GT-55
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03-17-2013, 02:29 AM
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#6
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Name: 12vcummins96
Title: lovin those huffers
Status: Not Here
Join Date: Jan 2010
Location: Pearland
Member`s Gallery
Posts: 284
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Quote:
Originally Posted by RyanH
I would look into a torktec or regulator.
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I've used both and still the same issue
I'm still using my aeromotive regulator with the same results
__________________
96 12v eclb drw compounded
94 12v scsb prostock under construction
73 volksrod
51 chevy truck ratrod
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03-17-2013, 10:27 AM
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#7
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Name: cumminsman315
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: Missouri
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Posts: 987
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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...
__________________
01 24v
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03-17-2013, 01:25 PM
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#8
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Name: inline
Title: Professional lurker
Status: Not Here
Join Date: Apr 2011
Location: Rhode Island
Member`s Gallery
Posts: 808
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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?
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03-17-2013, 04:54 PM
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#9
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Name: dixon700
Title: cummins fanatic
Status: Not Here
Join Date: Jan 2013
Location: DuBois, Pa
Member`s Gallery
Posts: 680
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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...
__________________
04.5qcsb 3/4hd built 47reh kilduff isspro adii motorsportdiesel 100%over 10.6cp3&bypass CPP stainless diesel63 over s475 trac bars mishimoto Hamilton pusher arp smarty touch udc pro by gordon 4"-7"stacks 4.10's 6"lift 37"toyo mts eagle wheels dynatrac top gun customz
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03-17-2013, 05:36 PM
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#10
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Name: 12vcummins96
Title: lovin those huffers
Status: Not Here
Join Date: Jan 2010
Location: Pearland
Member`s Gallery
Posts: 284
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Quote:
Originally Posted by cumminsman315
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...
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my setup is
180 pump no plate 5k gsk smokem special dvs rack plug 5x14s
compounded with a 63/68 over a hx60
__________________
96 12v eclb drw compounded
94 12v scsb prostock under construction
73 volksrod
51 chevy truck ratrod
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03-18-2013, 06:57 PM
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#11
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Name: dixon700
Title: cummins fanatic
Status: Not Here
Join Date: Jan 2013
Location: DuBois, Pa
Member`s Gallery
Posts: 680
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Emailed airdog directly and they said its my stock canister restricting the flow...
__________________
04.5qcsb 3/4hd built 47reh kilduff isspro adii motorsportdiesel 100%over 10.6cp3&bypass CPP stainless diesel63 over s475 trac bars mishimoto Hamilton pusher arp smarty touch udc pro by gordon 4"-7"stacks 4.10's 6"lift 37"toyo mts eagle wheels dynatrac top gun customz
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03-19-2013, 09:02 AM
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#12
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Name: 12vcummins96
Title: lovin those huffers
Status: Not Here
Join Date: Jan 2010
Location: Pearland
Member`s Gallery
Posts: 284
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so i guess i will be looking into getting a sump
__________________
96 12v eclb drw compounded
94 12v scsb prostock under construction
73 volksrod
51 chevy truck ratrod
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03-20-2013, 12:10 AM
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#13
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Name: dixon700
Title: cummins fanatic
Status: Not Here
Join Date: Jan 2013
Location: DuBois, Pa
Member`s Gallery
Posts: 680
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Idk if bypassing my stock canister filter will fix this big pressure drop. I'm going to try it this summer.
__________________
04.5qcsb 3/4hd built 47reh kilduff isspro adii motorsportdiesel 100%over 10.6cp3&bypass CPP stainless diesel63 over s475 trac bars mishimoto Hamilton pusher arp smarty touch udc pro by gordon 4"-7"stacks 4.10's 6"lift 37"toyo mts eagle wheels dynatrac top gun customz
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08-19-2013, 05:08 PM
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#14
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Name: johnfak
Title: Too Much Time
Status: Not Here
Join Date: May 2011
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Posts: 253
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thought there was a spring mod you could do ..... at least on the older unit - AD100 etc
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08-19-2013, 05:30 PM
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#15
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Name: Lostnwalmart
Title: Too Much Time
Status: Not Here
Join Date: Jul 2006
Location: Tokyo Japan
Member`s Gallery
Posts: 8,970
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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.
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Ecorico scooter!!
-Cliff
Quote:
Originally Posted by Snedge
Anybody that would not haul a dinosaur for an orphanage is no friend of mine.
To some people it's all about money. Geez
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08-19-2013, 07:22 PM
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#16
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Name: B N S slammer
Title: Too Much Time
Status: Not Here
Join Date: Aug 2012
Location: Southern Indiana
Member`s Gallery
Posts: 309
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Quote:
Originally Posted by dixon700
Idk if bypassing my stock canister filter will fix this big pressure drop. I'm going to try it this summer.
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I bypassed mine and nothing changed, still had the pressure drop issue..
__________________
-Kory-
02 Blue N Silver 6 Speed: 215 Pump, DFI 7x.012 SAC's, 188/220, s357/s475... 650/1230
Only two things can break a man's heart, a chick and a dyno.
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08-22-2013, 04:45 PM
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#17
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Name: Valair1
Title: Valair Inc. Clutch
Status: Not Here
Join Date: Jul 2008
Location: Crowley Texas
Member`s Gallery
Posts: 2,498
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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
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08-22-2013, 07:49 PM
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#18
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Name: DieselheaD
Title: Too Much Time
Status: Not Here
Join Date: Jun 2007
Location: CA
Member`s Gallery
Posts: 2,731
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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.
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08-23-2013, 05:11 AM
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#19
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Name: Valair1
Title: Valair Inc. Clutch
Status: Not Here
Join Date: Jul 2008
Location: Crowley Texas
Member`s Gallery
Posts: 2,498
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And I am running stock canister with a draw straw.
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09-23-2013, 09:45 AM
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#20
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Name: JIT
Title: Cummin in Hot
Status: Not Here
Join Date: Jan 2008
Location: Tampa
Member`s Gallery
Posts: 1,322
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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.
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Pissing Excellence since 1979!
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