Looking for help. 1986 300e will run 10 to 15 minutes b4 running rough and stalls. plugs are loaded with fuel . would run all day if you didnt have to idle. took to dealer. was told it was o2 , replaced that. then fuel distributor system ? replaced that, then the etc sensor. That didnt work either. The car is in very good shape with 87k miles. My father in law took off the road of the problem. Ran it every month in his garage for a couple years with the same issue. it would run 10 to 15 then flood and die. Any ideas ? thanks