2nd Generation Dodge 24 Valve Powertrain

Hey guys, I gots me an AirDog II 165. I installed it back in September and have been with this quirk since then. I'm not sure if it is a problem or anything but just wanted to see if others experience this?I got my fuel pressure at 20psi according to my fuel pressure gauge. When I start the truck and the grid heaters kick on, the fuel gauge will go down to 15-16psi. When the grid heaters switch off, the fuel jumps back up to 20 psi. I have watched the fuel in the line move back and forth to the gauge as they switch on and off.Its a mechanical gauge with a cage protector in between the stock fuel filter housing and gauge.WOT never shows fuel pressure to be lower than 15psi…

seeing that surging can be an issue would putting my sensor in the air dog sensor hole location be a good idea? or would this be to far back? mine is located under the drivers door on the frame.

After reading Mikes thread about the ball getting stuck to the spring I figured I'd check mine today.yep the ball was pushed into the end of the spring bit. back up to 16 at idle and the lowest I could get it to drop to wot was 13.5.What a mess what do you guys do to keep from losing alot of fuel. I clamped the hoses but it still was a diesel bath. Do they make some shut off valves to put in line with the big line hoses??Luke

My fuel pressure kept going up and down. The adjustment "jam" nut (9/16) I can turn but the nut behind it (3/4") also moves. Can't get wrench on it because of bracket is blocking wrenching room. I ground down an old wrench, still not enough room for both wrenches. Problem is created because I turned the airdog 180 so I could use old fass bracket without drilling new/more holes. Question...if I hang pump on fence and suck fuel out of bucket to set pressure will pressure be the same when hooked up to vp44? Thought I would bend over vinyl hose to create back pressure. I don't want to keep taking pump off and on...thought hanging on fence …

Where is a good location to install the elec connection for air dog? In pic... mine is secured by a zip tie and tucked under weatherstriping that goes across the cowl. And not weather tight connection. Certainly must be better spot. Also,is one battery better than other for connection? Thanks

Hello Guru's. I need to change the filter on my airdog 100. The last time I did it I remember losing lots of fuel. What do you guys do ? I was thinking of clamping the hoses. Have any of you ball valves on the hoses to keep from losing fuel ?

Wondering if I should filter more. Right now fuel line goes from tank to airdog 95 (or 100?) Filters then to vp44. If I need more or better what would you recommend? Thanks

My 02 dully is a cab and chassis, I am able to get to the in tank module/fuel pump. I was planning to install a Airdog 150 with draw straw then I saw the Airdog Fuel Module, what is involved here? And how is my fuel gauge to work if I pull out old pump. In other words I havent a clue.

So I bought a used airdog off my buddy a couple month ago. It is the older version. Everything works on it but I’ve been noticing that it doesn’t keep pressure constant. I set it to 18psi at idle but if I really get on it it will go down to around 11psi on a really hot tune. Is this a sign of my motor getting weak? I’ve seen some write-ups that you can order a 4g motor from airdog and it will fit on my airdog. Is this drop in psi normal or is it getting weak? Or is their something I can do to keep it at a more constant psi all throughout my throttle position?

up here in ND now and we just got super cold weather and now I got number 1 in its been -15 for the past 3 days now and I have a problems of jelling up. I know the tank isn't Jelling up anymore it just when I go driving around I start to jell up and I think it comes from where the airdog is mounted and not getting any heat. I was wondering if anyone else has had this problem with Filters to cold.

Whats all involved in changing the fuel pressure setting on the Airdog I FP-150

Need some help guys I have low fuel pressure on my airdog 150 it's running 13psi vp44 truck. The pump is kinda noisy I've checked power 13.82 volts checked my ground and changed the filters and relay and it's a new electric pump got a warranty about 2 months ago was fine then boom 13psi.

I know my VP44 is on the way out, but I was wondering if installing an airdogII now would hurt anything. I think I'll go with the AirdogII because I like the idea of the adjustable regulator. Does FASS offer anything that's adjustable? I'm still hoping the vp44 makes it to spring.

I recently replaced my VP44 and installed an Airdog 150. I started with the bigger spring because I wanted more than 15 psi, but I was getting 20 - 21. I changed the spring and now I have 19-20 psi. This seems a little high to me. Any suggestions on adjusting it? Also the only port for the gauge is on the pump. Is this ok? Before is was on the vp44 fitting.

Ok as usual Michael hit it on the money again, don't get your hopes up just yet, it didn't fix the real problem (surge). But we now have 17 psi on fuel gauge. Went from 12.75 to 17 at idle, wot 15.25 on a airdog 100 with a 150 draw straw. Speaking of surge would injectors cause that or not?The .740 had to be brought down to .690. I could feel the washer line up as I screwed fitting in with fingers. It then went smooth all the way till tight.

With the recent snow storm I was pummeled with, I had to utilize the truck today to get to work. Unfortunately, the lift pump wasn't giving me a pre start prime. Even cranked over and running, the lift pump is still not giving pressure. I checked the fuse, it's good. I swapped the relay out with a different one. Nothing. I checked voltage at fuse and got nothing. Any ideas? Pump dead? Some other electrical issue?

I finally installed a fuel pressure gauge in my truck. Now I'm wondering what normal operating pressure is. I have an Air Dog 150 and my pressure runs around 18-20. When I get on it, it goes down to about 16 - 18. At start up when the pump cycles it goes to 20. Is that too much? And if so how can I turn the AirDog down?I also noticed today that it was jumping around between 18 - 20 at idle.Lucky

Back in 07 I bought a PF100 for an 01 24v that I had. In less than a year I was on my 3rd pump, (all covered under warranty). The first one burnt its self out due to being restricted, the second one quit due to a cheap o-ring that shrunk in the cold weather allowing the pump to suck air. The 3rd pump seemed to work alright but by then the blue fuel lines had started to show dry rot cracks. I ended up selling the truck not to long after that so I wasnt able to really put the pump to the test. To those who have and are currently running an Airdog, have you experienced an issues? A few weeks ago I picked up a basically stock 02 24v and have been looking for lift pump rep…

I'm trying to decide between an airdog 150 or the airdogII. I know the 150 will supply more fuel than I'll need, but they are set at 15psi and I would like to be able to adjust it. 15psi is good, but is it best? I would like to see 16 to 18. Any input would be great.

Currently I have a FASS draw straw and a sump with a new Airdog DF 100 system. The new Airdog system is hooked up to a sump and currently the draw straw is plugged off at the fittings. I recently got a Carter for a back up pump. I would like to keep the sump for the Airdog and its filters and run a fuel line close to the VP44 with shut off valve. And then hook up the carter via the draw straw thru to the stock fuel filter on motor then to a shut off valve. With a shut off valve on each line, I would open that valve for the line I’m using at the time. Then install pressure gauge, then to VP44. And install a toggle switch for on/off switch to each pump. Questio…