I've always been under the impression that 98% of EcoDiesel lift pumps will last 150,000 miles (assuming people aren't running their fuel low in the summer months and prematurely killing the pump). At that point, it might not be a bad idea to replace the OE lift pump just to circumvent problems down the road.No sir......on my second pump total.
At some point, I would like to install a fuel pressure gauge and be able to monitor PSI either on an iDash Data Monster or Edge CTS3. Based on what I've read, the lift pump will show signs of weakening before a total failure occurs. Ideally, that would be better than arbitrarily picking a time/date to replace the lift pump. Although, the cost to have that kind of data isn't cheap.