Fuel pump replacement doesn't work.

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  #1  
Old 07-06-13, 02:48 PM
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Fuel pump replacement doesn't work.

So while mowing with the Poulan Z-turn, an errant branch caught the fuel line and ripped out the attatched pump. Bummer, but no big deal. An easy R&R right? Wrong. Ever since the 26 hp B&S refuses to hold an idle. What gives?
 
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  #2  
Old 07-07-13, 05:45 AM
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If it runs past idle OK, it probably isn't the fuel pump causing the problem. What's the model number of the engine?
 
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Old 07-07-13, 05:55 AM
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Disconnect the line that runs from the pump to the carburetor and turn the key to see if fuel runs out in a steady steam. If it does then it's not the pump, kinked fuel line or carburetor needs cleaning and rebuilding.
 
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Old 07-08-13, 06:54 AM
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The model number is 44P777-0110-CO and yes fuel does dribble our when the line is disconnected forward of the pump.
I thought about the carb and even disassembled partially to reveal an immaculate interior. The machine only has 111 hours on it. Besides, she was running perfectly prior to the brush entanglement.
 
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Old 07-08-13, 09:07 AM
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Yep, sounds like carb trouble. It can happen to a perfectly clean carb with 10 minutes on it. When the pump broke, a tiny piece of something went to the carb and clogged it.
 
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Old 07-08-13, 10:57 AM
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Okay, I've got lots of time to clean the carb, no problem. Here's an update though: It'll run all day on periodic bursts of Gumout with the fuel line disconnected and btw, there is no steady flow from the pump. Nothing at all in operation and the fuel filter has a sizable bubble inside. Cause for concern?
 
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Old 07-08-13, 06:57 PM
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Conclusion:
Upon cleaning the carb fully, the problem persisted until I just returned the fuel pump in complete frusteration. Upon speaking with the technician turns out another line was lost to the brach as well. It's called a "vacuum hose". Who knew it's responsible for the complete operation of the thing? Four dollars later I had the fix, a hose no bigger than my pinkey finger, and now we're up and running
Thanks everybody!
 
  #8  
Old 07-09-13, 12:22 AM
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I see now you say the pump had a dribble. I guess that meant a very small dribble. Glad you found the problem. That hose is cracked on nearly every one I look at. Poor choice of material.
 
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