W116, BENZ AID - COMMON QUESTIONS AND ANSWERS

My son is away at college with my 1987 190D. The trunk used to open, but lately the keyhole is in the horizontal position, the button will push in, but the trunk won't open. Yesterday he called and says that now the fuel filler door has locked itself and won't open. He's almost out of fuel and is threatening to take a hacksaw to it! Is this a vacuum problem? What should I do?

Hey there, So I've got an '84 300D Turbo, it sat for a bit (couple of weeks) with a half-full tank of B99, which then gelled in the cold Seattle weather, so I added some Diesel to it. Now it's got tons of black stuff in the pre-filter. I'm told this could be from condensation. I've literally been changing the quickly filling filter out every couple of times I drive it, to be safe. I'm not driving far, and it gets pretty black in those couple of trips. Sigh. So.... I read a few other things & places, and it seems this is an algae (fungus?) problem. I also read I should get various Biocides, and ended up with BioBor. I haven't added it to the tank yet, and have a couple of questions. If anyone can help I'd appreciate it. There is about a 1/4 tank in there now, should I:

My 1979 Roadster runs good until it warms up, then dies when you let up on the accelerator. Any info about this problem will be appreciated.

I have a 220D that sat for several years, but previous owner said it ran last year after compression starting. I have no glow plug light before and after pencil type glow plug upgrade from mercedessource. Motor spins fast enough and acts like it wants to start. I can smell burnt fuel from the tailpipe, but it just won't catch. When the starter knob is pulled out to the glow position I do see the dash lights dim a little. I've found a couple of comments about W115 220d's not having a glow plug relay. What else can I check to verify function of the glow plugs?