Diaphram lift pump failed - TDR Roundtable

Diaphram lift pump failed

04-10-2007, 12:44 PM

#1 (permalink)

Jgolden

Offline
Join Date: Feb 2004 Location: upstate NY Posts: 396

Diaphram lift pump failed

No sign of spring here so I thought I would remove and check the diaphram lift pump. The prime lever didn't seem to work, and lots of discussion here about weak lift pumps.
I have a walbro electric at the tank.
The pump arm was almost impossible to move. Not sure when it failed but my guess is way back.
The electric pump must have been pushing through the lift pump, and last trip I could maintain 65 on a level road(towing car) but lost speed pretty quick on short steep hills.
No doubt the dead pump was an obstruction but not sure how much. Could be the electric can"t deliver enough fuel by it's self. It's pretty far back (20ft)
I get to choose Bypass and use only electric. Low pressure piston pump. New diaphram pump.
Any recommendations appreciated.
Thanks

__________________
1990 5.9 160(?)Cummins non IC in Freightliner front engine chassis/motorhome, Allison 545, pyro, boost gague, HTT stage II,4" Donaldson monster muffler.
82 Dodge Ram 4wd, 72 Jeepster, 1998 Ram 2500 (avoiding 21th Century)

Non members can only view the initial post on threads more than 7 days old. There are 13 additional replies on this thread that you could view if you were a member.

TDR Membership offers many benefits including:

4 issues of the TDR magazine per year including these columns:
- Tailgating - A Letter From The Editor
- Letter Exchange - Responses From The Readers
- Member2Member - Members' Solutions To Members' Questions
- Technical Topics - Service/Parts Update
- First Generation - Owner-Specific Articles On The '89 - '93 Dodge Diesel Trucks
- 12-Valve Engines - Owner-Specific Articles On The '94 - '98.5 12-Valve Dodge Diesel Trucks
- 24-Valve Engines - Owner-Specific Articles On The '98.5 - '02 24-Valve Dodge Diesel Trucks
- Third Generation - Owner-Specific Articles On The '03 And Newer Dodge Diesel Trucks
- Blowin' In The Wind - Industry News
- Shadetree - Back To The Basics
- Celebrity Corner - The Shadetree Mechanic - Sam Memmolo
- From The Shop Floor - Tips From Turbo Diesel Repair Shops
- Products Showcase - Featured Products
- TDRelease - Vendor Press Releases
In many areas of the country a local chapter with events
A yearly printed copy of the TDR Travel companion listing approximately 700 TDR members across the country willing to help you if you have trouble on the road
Complete access to the TDR website including:
- Ability to do advanced searches over 1.1 million posts
- Access to members only forums (Truck 911, FAQ Forums, Discontinued parts support, Rigs spotted, Pay it forward, Other, and Political)
- Posting ability to the forums
- Ability to read an unlimited number of posts from the forums
- Can customize your forum list to your interests
- Can choose 1st, 2nd, 3rd gen, or rotating header graphics
- Limit searches to forums your interested in
- View posts since you last logged on
- Private message ability to other members
- Chat room access
- Diesel truck specific TSB listing by model year
- Online access to the Travel Companion database (with most current information)