Andair Fuel Pump Problem

[RV7AJeremy]

Originally Posted by Flyguytki

So if your interested in a new Andair Fuel pump stay tuned and I might just have a deal you.

-david

I'll get inline if you get it replaced

[hydroguy2]

Originally Posted by Flyguytki

......however I did have to hurry and come up with a solution. This weekend I have my family flying in to help out.....

-david

Careful, hurrying can be an issue all by itself

[Wayne Gillispie]

It sounds like a locked up three phase DC brushless motor or bad electronic control. I install and repair up to 1 HP models of this type of motor. Efficient, powerful, usually low maintenance and very expensive. That is why I went with Airflow.

[David-aviator]

Originally Posted by ColoRv

Putting a hose on to suck fuel (prime) seems a bit like pushing your car rather than drive it. The whole point of that pump is that it's self priming....if it won't, then its malfunctioning.... isn't it?

I do not believe any of these pumps are self priming no matter what is said about it. They will not suck air.

If there is fuel in the line they will suck fuel up hill, Jan Eggenfellner sucked fuel to the top of his hangar when testing essentially the same pump sold by AFP and Vans.

But if there is air in the pump or in the line upstream, forget it.

[Flyguytki]

Originally Posted by David-aviator

I do not believe any of these pumps are self priming no matter what is said about it. They will not suck air.

If there is fuel in the line they will suck fuel up hill, Jan Eggenfellner sucked fuel to the top of his hangar when testing essentially the same pump sold by AFP and Vans.

But if there is air in the pump or in the line upstream, forget it.

This is exactly right, one thing to add is on the andair pumps they use fuel for lubrication. What the issue was, was that the pump had been sitting for 2 years and like was said previously it will not suck air. After sucking fuel through the line and letting it sit overnight the pump is now operational. Thanks for all the ideas this site sure can save you a lot of money just as my h as it can make u spend it :-)

[derLuigi]

Hi David,
I talked to Andy (from Andair) on the AERO-Expo this week and he said that having it sit for an extended period of time might be the culprit. He suggested spraying a bit of oil or WD-40 in the inlet and trying again. You basically did that so there's no need for option 2 of sending it back to them so they can take a look at it.

Andy also said they're easiest to reach by phone.

[Flyguytki]

Mario Thanks you so much for talking to them, thats a huge help, Seems they know their product well, after you let fuel sit in the system over night it fired right up and worked great.

Thanks alot !!!

-david

[CharlieWaffles]

I am having this same exact problem with mine. I also sucked fuel through and am letting it sit soaked in the fuel filled line and hopefully that will rejuvenate it. Otherwise I will have to call Andair and reschedule my DAR visit.

[Flyguytki]

You should be fine, as long as fuel got sucked through the pump, give it an hour or so and it SHOULD be just fine. At least thats what happened with mine.

-david

[CharlieWaffles]

Pump is still dead even after 3 days baking with fuel in the lines/pump. I spoke with Andy at Andair and he mentioned that they suspect the fuel they used to test the pump before shipping has possibly seized up. He said at the time they never suspected these would sit on the shelf unused for as long as we do when we are building. They now flush all the fuel and preserve them before shipping now.

He suggested in my case since mine was made in 2011 is to remove it and try putting some oil inside and cycling the pump to see if it will come unstuck. If not, they want it shipped back to repair.