I visited a local fuel injection shop yesterday while researching several related topics. I was shown this DB2-4911 whose owner had been running processed WVO.



This shop can recognize pumps that were running processed WVO, and do not provide a warranty on those pumps. The one shown here was obviously affected by the corrosive components in the fuel mixture, which produced a variety of engine running issues. You can tell by the appearance of the pump's exterior that this was a low-time pump. In addition to a pump rebuild, the owner was also looking at replacing all eight injectors.

Jim