I am working on my first pd engine. I was told the car didnt start and it got towed to the dealer and they told the guy that the car was getting soot into the fuel tank and it was caused by a bad head. They said they can clean fuel tank for 1000 bucks. Now I got the car and it starts and runs. I read these cars have electric fuel pumps. I disconnected the feed line cycled the key and nothing came out. Im going to do a bit more research but has anyone heard of the problem the dealer told this guy?