Lift Pump Bypass

[jwallis]

Was at my brothers today and was talking about his old ctd 2000 2500 4x4. anyways the lift pumped failed so he went a picked up a 100 dollar edlebrock electric fuel pump, spliced it into his lines by tank and ran them straight to filter bowl bypassing lift pump completely. ran power to a toggle switch in cab which is handy because if anyone is gonna steal the truck they would make it about 200ft before running out of fuel. after install he never dropped below 15 psi and never got above 20-21. anyone else done this?

[Mopar1973Man]

Be careful of the switch... First off the VP44 can and will draw its own fuel from the tank without a lift pump. So if you forget to turn on the pump it will continue to run and do damage to itsself. As for using other fuel pumps there has been many people do this... But the problem is most times out of ten the lift pump fails in a short amount of time. Holley Blue and Black pump were favorites back in the day but they last a short time and failed. So most people went to AirDog or FASS because of the lifetime warranty and moved on with life... You might run in to starting problems with high lift pump pressure at startup. This is why the ECM controls the lift pump during cranking to reduce fuel pressure to 50% duty cycle. Then once the engine is running the lift pump is running full 100% duty cycle. Typical cranking pressure is 10-12 PSI but typical running pressure is 14-20 PSI. http://articles.mopar1973man.com/index.php?option=com_content&view=article&id=49:fuel-pressure-specification-for-bosch-vp44-injection-pumps&catid=25&Itemid=107

http-~~-//www.youtube.com/watch?v=NCJjMzRImpA

[Dave3500]

Yes, I'd have to agree w Michael, there have been many threads on this over the years here & other sites. I went for the AirDog Raptor.Start saving your money,Dave

[MarbleCrusher]

My friend has used edelbrocks on his and they lasted him about a year, he did that twice then upgraded to a raptor pump.-Jordan-

[jwallis]

sweet guys. thanks for the replys.

[Dave3500]

sweet guys. thanks for the replys.

This is a great site for honest no BS answers. Good luck, Dave

[kammak]

This is a great site for honest no BS answers. Good luck, Dave

I'm definitely having to agree.I'm fresh from the usual sites of steroids and hormones.This is a nice change for the moderate diesel lover.