Airdog II DF-165

[PGreenSVT]

Anyone aware of anybody that has had one of these fail on them? Driving home one evening my pressure started out at 55psi where it is normally set and continued to loose pressre over the course of the trip home till my gauge was only showing 20 psi. I knew I had a weak spring in the fuel pressure regulator so I went ahead and rebuilt it with Ford's updated kit. No help, in fact the fuel pressre barely registers.

I needed to change my mounting location so I took it all apart and moved it outside the frame rail. No blockage in any of the lines, filters good, fuel looks good, cranked it up and still no pressure to speak of. Truck starts and runs but you can hear it isn't running right and is missing slightly.

I will check it tomorrow with another gauge to rule out mine but I would bet money that's not the problem. I bought this instead of the Fass considering all the failed pumps Fass has experienced and only have about 3k on the ADII. At this point I don't know what else it could be but the pump. So anybody aware of any DF-165 failures?

[Lilpooh]

Not sure if this is the same model, but here you go.
Pureflow: This is becoming a joke - TheDieselGarage.com

[PGreenSVT]

Thanks Lilpooh. I had know idea they were having as many problems as they are. Those are the exact symptoms mine displayed when it crapped out. I just talked with Pureflow and they are shipping a new unit out. I haven't been having any issues drawing all the fuel from the tank but if I do I guess I'll go ahead and install a Hellman Sump while I'm at it.

[06powerstroke06]

Man that sucks. At least you are getting a new one shipped out to you.

[PGreenSVT]

Originally Posted by 06powerstroke06

Man that sucks. At least you are getting a new one shipped out to you.

Some real interesting reading in that thread Lilpooh posted. Evidently Pureflow is having a pretty high failure rate like Fass. I'm surprised I hadn't seen anything here about it.

[06powerstroke06]

Not encouraging

[sleeper1]

Man I'm going to be pissed if mine dies out. I haven't had it in that long but as it is, it won't even hold a set pressure. It drops about 10psi at wot and varies +-3psi just driving around. I figured spending that much would get you a quality fuel pump. I wonder what's going to happen when I put 190's in...

[alwil]

Originally Posted by sleeper1

Man I'm going to be pissed if mine dies out. I haven't had it in that long but as it is, it won't even hold a set pressure. It drops about 10psi at wot and varies +-3psi just driving around. I figured spending that much would get you a quality fuel pump. I wonder what's going to happen when I put 190's in...

Get the pump issues worked out before you put them in

[PGreenSVT]

Originally Posted by sleeper1

Man I'm going to be pissed if mine dies out. I haven't had it in that long but as it is, it won't even hold a set pressure. It drops about 10psi at wot and varies +-3psi just driving around. I figured spending that much would get you a quality fuel pump. I wonder what's going to happen when I put 190's in...

Yeah, Pretty much the same as mine. I only had about 3k on mine.

[shu873]

That's why I love my AD 150 pushing to the HFCM. High volume, low pressure works every time. I did for whatever reason have to replace a relay not long after I got it, but other than that it's been flawless. If my AD does crap out it will also bypass and not leave me stranded... Had it in the truck for over 2 years now.

If I ever do need more flow to the motor I'll add in a raptor.