Engine stops after 5 minutes flight, suggestions?
05-04-2019, 12:55 PM
#27
My Feedback: (48)
Dan Avila is correct, I did as he suggested and found the filter restricted, hard to get air through it, I cleaned it with alcohol and a cotton tip applicator, after that it was very easy to blow air through it, as a precaution I also removed, inspected and clean the UAT, again with alcohol, don't see any algie formation in there.
At this point is all I can do is monitor the suction on the ground before going up again.
Thank you all for taking the time to post ypur suggestions.
I use Biobor JF https://www.biobor.com/fuel-additives/aviation-fuel-additives/
It doesn't take much to treat 5 gallons of kero or diesel. An 8 oz. bottle should last you the rest of your life.
05-04-2019, 04:18 PM
#30
I've been using Bio-Bor for years but I still seem to get some sort of build-up in my MAP air traps which loads up the pump after about 40-50 flights. I mainly use pump Kero which is double filtered coming out of the caddy.
I've changed the MAP UAT on both my Ultra Flash and Hunter, and have switched to the Intairco Air Trap on the Hunter, which has lowered the pump voltage compared to the MAP air trap.
Paul
I've changed the MAP UAT on both my Ultra Flash and Hunter, and have switched to the Intairco Air Trap on the Hunter, which has lowered the pump voltage compared to the MAP air trap.
Paul
05-04-2019, 06:10 PM
#32
I’m usually clean it up with carburetor cleaner works the best,it’s designed to clean up the hard to clean stuff and dry fast too,there actually no cure for the stuff just mechanical cleaning and maintenance,and I changed the clunk with the felt one in my main fill up tank this stops the sludge to get inside the jet and maintenance it every new season.
05-07-2019, 01:40 AM
#34
Clad.
I wrote an article for RCJI , published in the edition before last on handling and management of jet fuels, particularly the avoidance of “clad”, the sludge which forms in some fuel installations, which is basically the result of water, either free or entrained, in the fuel.
Using these simple techniques, based on fullsize fuel handling, I have never had a “clad” problem, even in fuel which has been stored for several years, after using several thousand litres in model engines and over 60 million litres of the stuff elsewhere.
Using these simple techniques, based on fullsize fuel handling, I have never had a “clad” problem, even in fuel which has been stored for several years, after using several thousand litres in model engines and over 60 million litres of the stuff elsewhere.
05-07-2019, 06:23 AM
#36
I came up with a solution for adding in the tiny amount of BioBor to my fuel. It was to hard for me to accurately measure out 1.838 ml or cc of Biobor to add to a 5 gallon jug.
If you read the dosing instruction on the bottle, the dosage is 1 oz per 80 gallons gallons of fuel. That means that you need only 0.0625 (1/16) of an ounce of BioBor in a 5 gallon jug. Still hard to measure.
I mix 15 oz of fuel with 1 oz of the BioBor. I then add one oz of this solution and 1 qt of oil to my empty 5 gal jug and fill it with 5 gallons of fuel. This gets me the correct mix. For the first time in an existing system, Biobor recommends a "shock treatment" of double the dose. So I just have to add 2 oz of my mixture.
The bottle that I keep this mix in is one of those with the 1 oz measuring cup on top that you squeeze to fill.
https://www.berlinpackaging.com/3250...BoC-5wQAvD_BwE
If you read the dosing instruction on the bottle, the dosage is 1 oz per 80 gallons gallons of fuel. That means that you need only 0.0625 (1/16) of an ounce of BioBor in a 5 gallon jug. Still hard to measure.
I mix 15 oz of fuel with 1 oz of the BioBor. I then add one oz of this solution and 1 qt of oil to my empty 5 gal jug and fill it with 5 gallons of fuel. This gets me the correct mix. For the first time in an existing system, Biobor recommends a "shock treatment" of double the dose. So I just have to add 2 oz of my mixture.
The bottle that I keep this mix in is one of those with the 1 oz measuring cup on top that you squeeze to fill.
https://www.berlinpackaging.com/3250...BoC-5wQAvD_BwE
05-07-2019, 09:56 PM
#40
All the calculations that need to be done are on the BioBor Bottle. I use a syringe and measure in milliliters.
Shock treatment for 5 gal of fuel (I use diesel. May very a bit based on type of fuel) is 4ml of biobor. Maintenance treatment for 5 gal of fuel is 2ml of biobor. I use 3 ml per 5 gal of fuel and never had a problem for the past 10 years. I don't use on board fuel filters other then UATs. I filter the fuel through Mr. funnel into the fuel jug. Then I have two in line fuel filters on the jug itself. One before the fuel pump and one after. This has worked well for me over the years.
Shock treatment for 5 gal of fuel (I use diesel. May very a bit based on type of fuel) is 4ml of biobor. Maintenance treatment for 5 gal of fuel is 2ml of biobor. I use 3 ml per 5 gal of fuel and never had a problem for the past 10 years. I don't use on board fuel filters other then UATs. I filter the fuel through Mr. funnel into the fuel jug. Then I have two in line fuel filters on the jug itself. One before the fuel pump and one after. This has worked well for me over the years.
Last edited by DrV; 05-07-2019 at 09:58 PM.
