Thanks in advance for any advise, I have a 2001 NH TC35D and been having trouble getting fuel to the injectors. Sometimes it would start and sometimes not. Thinking it might be the fuel pump I by passed the pump with a low pressure 12 volt pump. It started and ran fine. Now should i leave it or buy a new pump. And if I leave the 12 volt should I remove the old pump and block it off. And does anyone see a problem with using a 12 volt pump and bypassing the old one. I don't want to screw something up.