When I park my car at an upward angle and restart the engine it sputters and dies. The car runs fine when parked on a flat surface or downward angle. I've checked the filters, the tank screen, the tank vent, cleaned all the check valves and banjo bolts and lengthened the spring on the fuel pressure valve, and replaced several possibly suspect fuel hoses.
Of note also is the prefilter, which is only about 1/2 full no matter how much I hand prime it. Small bubbles appear as well. Could my lift pump be bad?
Car is a 1973 220D.