i got my airdog 2 165 gph last week and got it running last weekend ran fine but had some pump noise wednesday started starting hard ( had to crank 10 sec after airdog turned off) and then it would start well thursday it had to crank 30 seconds after airdog turned off i relized i also lost prime as soon as i turned my key off and then it wouldnt turn back on i have to bump the starter for it to engage does anyone know what my problem could be i got ahold of airdog and going to try what they said but i just wanna know if anyone else had this problem and how you fixed it

 

How much fuel is in the tank? Any small leaks anywhere? How did you mount the draw straw?

 

prettty much a fuel tank no sign's of anyleak and through the bottom of the module with the bracket holding it down

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full tank sorry

 

Just installed one of those myself. Is it sluggish. Also the pick up tube with a full tank of fuel needs to be .750" to 1" off bottom of tank with a grove about .250" wide cut into bottom of pickup tube. I don't think an air leak would prevent the airdog from running without starting. It should turn on with key switch in run position after being off for 1 minute or so.

 

sounds to me like your vents are stopped up in the tank and its creating a vaccum. when you are running it or when you shut it off jump out and loosen the fill cap if it pulls air in you have pluged vents just fix them or add another. i had one in the shop that did that took forever to figure out it was something that simple. the pumps push so much volume they can create a nice vaccum and when it does it will suck all the fuel back out of the lines.

 

ya thats wat its going to be because ive noticed before the airdog it would suck air in when i would go to fill it thanks for the help and ive got the upgraded suction straw

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thank you banditdiesel that was the problem i had to rebleed the injectors and when it started i turned it off open the cap and it started up the first time with a little bit of cranking and then the second time with just the bump of the key thank you so much

 

no problem buddy glad i could point you in the right direction.

 

ya so thanks anyway bandit but that didnt help idk wat's going on the truck is stumbing all over the place and stalling out wont hold a prime making a whoosing sound sounds like a open boost tube but all are fine blocks alittle wet not sure if from a leaking injector line or a blown head gasket but im about to blow my headgasket and sell the truck im so pissed off right now i need some thing to change for the better

 

Where is your return? I just got done wqorking on a truck that the airdog lost prime and ran the truck dry. We found the return was dumping too close to the suction tube and was causing lots of air to get into the system. Routed the return for the airdog differently and has ran fine since, despite the mechanic she took it too using a whole can of ether trying to start it and cutting all the wires for her chip, not to mention breaking sensors digging in the engine bay. But that seemed to be the problem with hers with the return causing air to suck into the supply.