hi hopes this finds everyone doing well. so I am finally replacing the tank strainer today on my 99 e300 td. i got it out expecting a major blockage, and besides some black there was nothing that seemed to block it. im at a loss, my car dies at about 1/4 tank, nails loud, and has terrible turbo lag, Ive done almost everything you can name to the fuel system, where should i go now? im thinking maybe a cracked line in the tank so when it gets to 1/4 all it gets is air? Ive got the strainer out AND ALL ACCESS TO THE TANK SO I WANT TO FIGURE EVERYTHING OUT BEFORE I PUT IT ALL BACK TOGETHER PUT Diesel in and than have to redrain a whole quarter tank. please give me some guidance on where to go next specifically with the tank??