One way is to replace all your hose, making sure you have good connections. This would probably eliminate the source of air intake. Also, you need to get rid of that hardware-style vinyl water hose, that has no place in a fuel system. Get some good USCG approved fuel hose. SAE- J1527 221FR-5 is a good bullet-proof hose.
Bill Coleman Entrada, Erie, PA From: General Gao [mailto:general.z....@gmail.com] Sent: Monday, October 05, 2020 10:32 PM To: Stus-List Subject: Stus-List Re: Universal diesel Reporting back to my findings for today: This picture shows my primary filter? https://drive.google.com/file/d/18tYO70bg6tTpVEifQGlXSI1ucYuvgLDq/view?usp=sharing this picture shows the air in the tube out of the filter: https://drive.google.com/file/d/1bIr2NuR6K9nEYbwYj36OKaR4umeI2dsK/view?usp=sharing this picture shows the bleed valve: https://drive.google.com/file/d/1umfxt0UbC81YrAxemHWuBGX3M3U-I-3V/view?usp=sharing When I turned on the fuel pump, the click sound was heard; I could see the fuel in the tube move with the sound of fuel pump clicks; if I open the bleed valve, fuel will come out of the valve in the rhythm of the fuel pump clicks too; also, the fuel pump click sound is with faster pace if I keep the bleed valve open. I am having a hard time to understand why when there is so much air in the fuel, I still have fuel pumped out from the bleed valve at the fuel injector? I will continue to check the fuel lines. Now I remember that, while I was trying to figure out what was going on, my wife mentioned to me that she saw air bubble going from the filter side to the engine side...
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