In line fuel filter

[Darick]

I'm using the Jegs in line fuel filter, same as other folks are using.

https://www.jegs.com/i/JEGS/555/15034/10002/-1

I have the above filter on my AeroVee.

After reading the article "Top Three Fuel System Problem" in January 2019 Sport Aviation, I again looked at my Jegs Fuel filter. It has a 30-40 micron filter inside...40 microns = .0016! I changed out the filter at 5 hours, washed, put away for the next planned inspection, then replaced with the extra one sent from Jegs.

I just inspected the first one I had washed, with a magnifying glass and immediately saw an accumulation of dust, very fine particles in the folds of the filter, missed with the naked eye! This "dust" had to be removed with very pointy tweezers.

My question is...is that fine filter really necessary? I don't think there is any oriface in the AeroInjector that would get clogged with anything that small. On the contrary, it seems there would be more of a danger of the filter getting clogged with something that would otherwise pass through the AeroInjector.

I'm debating if I want to remove the filter and just rely on the finger strainer in the fuel tank. Anybody have any thoughts on this?

[sonex1374]

Darick,

Although one particle of lint, dust or crud might pass thru the AeroInjector harmlessly, many particles being present might be a separate situation. They might start to accumulate internally, and cause problems. I think the approach here is to clean out the crud from your fuel tank so the rate of accumulation slows to a predictable rate. I've noticed that the first year or two my filter showed a lot more accumulation than subsequent years, presumably as the tank purged itself from stuff admitted during construction. It might be better to try cleaning the filter every few hours over say the next few months and see if things settle down on their own.

The Jegs filter elements have quite a lot of surface area with all their folds, and should provide a good service interval. You could always run a flow test yourself just after removing the dirty filter (e.g. a timed volume flowed thru the dirty filter) and then repeat it after cleaning to get data on how "plugged" the filter had become. If you do this I'd love to see your results....

Jeff

[Bryan Cotton]

Flows up to 130 GPH @75PSI. That is a lot more PSI than our gravity feed systems have but I think the filter will catch a lot of crud before it impacts flow to an Aerovee. I'll probably check it at 25 or 50 hours and then yearly at annual.

[GordonTurner]

That little disk filter wouldn’t make me very comfortable. I think this filter may be designed to fit the same housing you have but offers hugely more area, and 100 microns makes more sense to me.

https://www.jegs.com/i/JEGS/555/15007/10002/-1

Gordon

[Bryan Cotton]

I'm not sure it fits the same housing. I don't think my housing is 5"length total including AN fittings.

[Darick]

You are correct Bryan. The housing we use is not the 5" model.

[GordonTurner]

Ah. I see you are correct. It looks like that one comes in 8AN