CJ3B Fuel Pump Question - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > CJ Jeep Forum > CJ Tech Forum

Join Wrangler Forum Today



Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-24-2015, 10:12 AM
Thread Starter
  #1
Jeeper
 
S_Scavo's Avatar
 
Join Date: Feb 2015
Location: Del Norte, CO
Posts: 297
S_Scavo is on a distinguished road
CJ3B Fuel Pump Question

Hey All,

These questions go out to all of you who have a 1950's CJ with the mechanical fuel pump with the vacuum pump and F head engine.

1) Is there an easy way to prime this system? I ran new rubber line and filter, put the line in a gas can (placed higher than the pump), and no fuel is getting to the carb. Its a brand new omix-ada fuel pump and filter.

2) How and where do the vacuum lines get run? I know where the wiper vacuum line goes, but where does the other run to?

Thanks
Sam
__________________
2014 JKU Copperhead
2015 KL Trailhawk Eco Green (wife's)
1954 CJ-3B - Sold
S_Scavo is offline   Quote
Old 06-26-2015, 12:08 AM   #2
Jeeper
 
deanp's Avatar
 
Join Date: Jun 2013
Location: Evans Co
Posts: 483
deanp is on a distinguished road
I don't have one that old, but you might try using a hand vacuum pump (like for bleeding brakes) to prime it, disconnect at the carb and draw the gas from the tank through the pump up to the carb. I have heard some fuel pumps can be damaged running them dry trying to get them primed.

Are you getting fuel at the pump showing it has drawn fuel that far? Just replaced the fuel lines on our CJ and used the hand pump. Hooked the line back to the carb and cranked a couple seconds and she fired right up.

This page might give you some more info on the vacuum lines and the F head engine.
Hurricane Engine Specs on The Jeep CJ3B Page

deanp is offline   Quote
Old 07-14-2015, 01:14 PM
Thread Starter
  #3
Jeeper
 
S_Scavo's Avatar
 
Join Date: Feb 2015
Location: Del Norte, CO
Posts: 297
S_Scavo is on a distinguished road
Thanks for the input deanp. Turns out the fuel line was too long. sortened by 2 feet and she fired right up. Now I just need to fix the stalling while at cruising speed.
__________________
2014 JKU Copperhead
2015 KL Trailhawk Eco Green (wife's)
1954 CJ-3B - Sold
S_Scavo is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 01:53 PM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner