On the drive to work today, made it about 4 miles. Pressure dropped to 12 then 10. Found a place to turn around pressure dropped to 0. Now the wiwrd part about one mike later pressure pegged high on my isspro electric gauge

Disassembled pics

I am kind of surprised the shaft wore that much!!

 

Usually the seal would give up before that would happen.

I got to ask the question do you have a filter before the pump? I wonder if just the pure debris value of the fuel is enough to eat the shaft up. That is odd the seal did wear out first.

What prefilter do you run?

With the AirDog 150 is just mesh filter before the pump. But in your case you would have to run a actual fuel filter before the pump to protect the pump from eating itself. That kind of wear is from debris (fine) against the shaft and seal. Even diesel fuel is a mild lubricant and with 2 cycle oil should be no problems. So that leads me back debris issues.

Tank was clean last time I dropped it. There was a very small accumulation of crud on the mesh inlet barely enough to be visible. I have an idea about mounting a separate small manually operated pump and polishing the fuel economy n the tank

Towed the caper this weekend. Solid 18psi crying along at 60.

I had a conversation with Eric at Vulcan Performance about AirDog failures. First off his knowledge of failures where mostly on the Raptor series of pump. The full AirDog 100 or AirDog 150 where fine from his stand point of failures and warranty.

I talked with Rick? At Glacier, he seems to think the crud on the motor side of the bearing was wet carbon dust

Need to grab that AirDog / Raptor thread and keep building on it. Maybe between all of us we can keep the pumps going without all the constantly calling "Pureflow" for warranty work.

I think come this October when I get a little extra cash I'm going to pull the trigger on the fuel boss. My current LP is getting the job done now but I have zero confidence in it over the long run.

 

Glad you got yours up and running!

Disassembled pics

I'm actually not that surprised the seal ate the shaft that much especially if the motor was throwing some fine dust at it. It just acts as a high speed sanding disk. In a rubber vs. metal situation like this, rubber wins. On an industrial scale I've seen rubber seals and conveyor belts cut through some pretty impressive stuff.

With the new pump my fuel pressure is fluctuating 1-3 psi at cruise speed.

what new pump? electric or fuel boss?

Raptor 150, warranty replacement

oh ok

I wonder how long the replacement will last,

my raptor 150 failed about 2 years after i bought it. it would fluctuate severely when i drove to the mountains (colorado)  one day i heard it making this god aweful noise (bearings failure i think) and i replaced it with a fuel boss. 3 or so yrs later fuel boss is consistent and zero issues.  i still have the raptor 150 ill eventually tear apart and rebuild if possible, use it for a transfer pump of some kind.

Like talkIng to Eric @ Vulcan performance Raptors tend to have the problems but full AirDog 100 or 150 seem to be fine.

Video of pressure fluctuations

Raptor 150 pressure fluctuations:

https://youtu.be/Z6mYCIBXxuw