Not sure if I posted the end solution to the problem I had with power loss on my car.

I live in Atlanta, and the car ran fine. When I drove to the steep hills of VA and W. VA, the car was DYING going up hills, dangerously slow. Other cars were whipping up hills at 70 mpg, and I could only go up at 45; it was literally dangerous; I had to pull off the road at one point.

I posted on the forum, and responses were "probably bad fuel", "they've changed diesel fuel it doesn't have enough power anymore", "there was probably water got in the filling station's fuel", "vacuum leak", and a range of other suggestions.

Thankfully, and by accident, I saw Kent Bergsma's video on YouTube about cleaning your TANK filter. I didn't even know the car had one. I had my general mechanic take the filter out, and sure enough, it was fairly clogged. He cleaned it, put it back in, and the car makes it up the hills of Va/W. VA again.

If you do this, MAKE SURE you have a NEW FILTER and a proper tool on hand, because it's tight to get into that area. You don't want to have your car apart, and find out your filter got damaged when you took it out, and it's going to take 3 days to get one. If anyone needs one, please buy mine. I have the tool and a new filter on hand just in case, but I (thankfully) didn't need it. Email me (not message) if you need it.

1991 300d, 191k