Engine/Transmission (1998.5 - 2002) Why not run a mechanical lift pump?

[TWilkening]

After my lift pump failed, I got to thinking about this. It's my understanding the cam even still has the gear for this. Other than hand priming, I can't think of any other possible disadvantage to doing this?

 

[Silver Bullet Ram]

Some people have done it. You would have to swap out the cam.

 

[rweis]

RASP? Mechanical, same cam.



Bob Weis

 

[Silver Bullet Ram]

True there is the RASP, pricey and still has the dreaded lift pump. I've got a lift pump going south and I'm not sure what direction I'm going yet, FASS, Rasp or swap out the cam and forget it. Too many options for lift pump replacements. I still think someone somewhere should have figured out the problem of the existing design and fixed it.

 

[paulb]

True there is the RASP, pricey and still has the dreaded lift pump.

The lift pump is only there as a backup. It has a hobbs switch that turns the lift pump on, if the psi drops below 8 psi. My pickup still have the original lift pump on it. I've got almost 100K on mine (including over 1000 1/4 mile passes). Works very well.



Paul

 

[blacksheepdiesel]

True there is the RASP, pricey and still has the dreaded lift pump. I've got a lift pump going south and I'm not sure what direction I'm going yet, FASS, Rasp or swap out the cam and forget it. Too many options for lift pump replacements. I still think someone somewhere should have figured out the problem of the existing design and fixed it.

They did, it's called AirDog! Ok, some people call it FASS, but my flavor (having installed and have experience with both) is AirDog hands down.



BTW, AirDog $ has dropped recently, VERY competitive w/FASS.



Godspeed,

Trent