WeedEater (Poulan) not pumping fuel after primer bulb replaced FL1500

Reply

  #1  
Old 10-02-12, 11:34 AM
Member
Thread Starter
Join Date: Nov 2008
Location: USA
Posts: 30
WeedEater (Poulan) not pumping fuel after primer bulb replaced FL1500

Was running fine until a split occured in the primer bulb. Removed the bulb and
installed a new one. Now the bulb won't fill no matter how many times pressed.
Is there an o-ring under the hold-down piece? Looks like a place for one and I think maybe I lost it. That would let air escape rather than pressure the tank, eh?

I don't have a parts breakdown.

Thanks for any help. Dixieflash
 
Sponsored Links
  #2  
Old 10-03-12, 10:14 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,814
No o-ring under it. If the bulb cracked, chances are high that the fuel lines have as well, which would cause your problem. Look at the lines inside the tank too.
 
  #3  
Old 10-09-12, 07:27 PM
Member
Thread Starter
Join Date: Nov 2008
Location: USA
Posts: 30
Cheese, I removed the tubes and closely inspected and pressure tested - no cracks or leaks.

All I did was change the bulb. After it sits a day or so the bulb is about half full. Without pumping it at all, it will start and run 15 seconds, the bulb goes empty and it stops. Tried pumping the bulb when it begins fading but can't keep it going. ?? When not running, pumping the bulb does not fill it with fuel as it should. ??? Check valve in the tank cap is working. ???

The small tube is on the small, upper connection and ends just inside the tank. This is the pressure tube, right? The large tube fits on the larger connection and goes to the bottom of the tank and connects to the filter. Checked the filter - it is passing gas fine. I did not change anything but the dang bulb and here is how it acts. Used to crank in about 3 pulls and run a whole tank without missing. What the heck can be wrong? DF
 
  #4  
Old 10-09-12, 07:34 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,814
I don't know why, but something else happened at the same time. It sounds like your inlet screen filter in the carb is clogged. It's under the cover on the opposite side of the primer.
 
  #5  
Old 10-09-12, 08:28 PM
Member
Join Date: Oct 2011
Location: USA
Posts: 433
Could it be that the lines are on backwards?? It can happen.
 
  #6  
Old 10-10-12, 09:09 AM
Member
Join Date: Jun 2006
Location: St. Louis
Posts: 2,365
Here is a diagram that might help. Have a good one. Geo

[ATTACH=CONFIG]4201[/ATTACH]
 
Attached Images  
  #7  
Old 10-16-12, 10:22 AM
Member
Thread Starter
Join Date: Nov 2008
Location: USA
Posts: 30
Geogrubb, the primer section is on top of the carb, not separate as in your diagram. Not at home now but I think the carb is a Webco. Anyway, only two tubes involved. I did not change the tubes, only installed a new bulb. It appears that the bulb pushes air into the sealed tank and forces fuel up to the carb until all air is expelled from the carb and tubes. At least that's the way it used to work. Now pressing the bulb does not cause fuel to flow.

The cap vent is working, the filter is on the tank bottom and is clean, the tubes are intact - no leaks-, no air or fuel leaks under the bulb, and the carb internal screen is clean and no water. The tank has no cracks, only the tube holes and the tubes appear to seal those to prevent air escape.

Think the next step is to rig up a gravity feed tank and see if it will run. Anyone have other suggestions? Thx. Dixieflash
 
  #8  
Old 10-16-12, 07:07 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,814
Actually, the primer draws fuel through the carb and pumps it back to the tank to prime the carburetor (get rid of the air in the carb). If it is not doing that, gravity feeding or not, it won't work. You need to find the blockage, fuel line routing error, or air leak.
 
  #9  
Old 11-18-12, 08:33 AM
Member
Thread Starter
Join Date: Nov 2008
Location: USA
Posts: 30
Red face FL1500 fuel problem solved

I finally took the carb apart and although the internal fine-screen filter LOOKED clear, it was coated in a transparent film of some residue. I cleaned the screen and away she went.

Friend told me that alcohol can form a clear-looking syrup and play havock with carbs and filters. Guess he was right. No more E gas for me!

Thanks for your help. Dixieflash
 
Reply

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


Thread Tools
Search this Thread
Display Modes