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P3314 fuel issues

Started by Dog1234, July 24, 2018, 10:38:16 PM

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Dog1234

Having trouble with a POULAN P3314 fuel system. First off my friend gave me the saw to fix. He replaced two fuel lines and purge bulb and it would not start. So I took it apart and noticed that the return line from the bulb to the tank was bad so I change it. Tried starting the machine and no go. If I remember correctly as I pumped the purge bulb it flooded the carburetor. Fuel coming out the carb and the cylinder seamed to be heavy on fuel. I cant remember details due to I have been messing around with this thing for a month now. 

I thing he may have had the fuel lines mixed up on the bulb.......... So i soaked the carb in cleaner installed a new kit in it and still having problems. As I pump bulb nothing happens just swishing sounds from the action of pumping the bulb. So I took off purge bulb from carb and attached two short pieces of fuel hose to bulb inserted hte end in fuel and it works properly. Fuel in and fuel out as needed. I attached the lines to the carb unattached to the saw and that where the air sound is coming into the equation. No fuel being picked up. It seem like their is air getting in the carb some where. Their is defiantly a vacuum being produced with the bulb alone but with the carb attache no vacuum. I can't figure it out. Any ideas would be great. I have been told to toss the saw, but I just can't give up. I also don't want to buy a new carb...................... No challenge in that. I have to figure this out.........  :-\ :-\ :-\

dougand3

The routing goes: 
1 Short fuel line from short purge tube to nipple on flywheel carb side. 
2. Long fuel line from long purge tube to hole in tank near clutch
3. Fuel filter in tank - line up thru hole under carb to nipple on clutch side.

The purge bulb doesn't prime, even tho mfgers call it that. It draws air out of carb to be replaced by fuel. You'll see nothing pushing bulb for 5-10x and then see a steady flow of fuel back to tank hole near clutch.

If proper routing doesn't fix, just buy a new carb - $12-15 online.
Husky: 372xt, 272xp, 61, 55 (x3)...Poulan: 315, 4218 (x3), 2375, 2150, 2055, 2000 (x3)...Stihl 011AVT...Homelite XL...Saws come in broken, get fixed or parted, find new homes

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