I have a manual 1982 diesel VW Vanagon with a 1996 Passat TDI engine in it. This morning (low 40s temp), accelerating up a hill, heard a hissing sound in left rear. Check tires, no problems. Able to start back up, change gears, but bad forward lurches past 15mph or so and can't get it going above 20-25mph.
I did just have a bunch of brake work done (new rear brake shoes, resurface brake drums, 2 new brake drums), but drove it for a few days no problems. It's been a little hard to start lately, taking a while to ignite.
Any thoughts appreciated.