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<blockquote data-quote="cmhbob" data-source="post: 1919696" data-attributes="member: 20220">I am at my wit&#039;s end here. Since I got into this, I&#039;vesiphoned the old fuel from the tank. and added 2 fresh gallonsreplaced the spark plugsreplaced the fuel filterrebuilt the carbstripped the carb and soaked it in Chem-dip for 18 hoursreplaced the fuel pumpStill no sustained run. I can get it going for 30 seconds or so if I run the fuel right down the breather throat. Replacing the pump gave us improved fuel flow, although the fuel filter still doesn&#039;t completely fill up.We tore the carb down as far as we could for the Chem-dip, including removing both flaps. The only thing we couldn&#039;t get out were the two brass jets. I just couldn&#039;t see how to remove them without damaging them.It&#039;s acting like it&#039;s starved for fuel, but the only thing left to change is the fuel lines. I think. I&#039;d hate to replace the carb, since it&#039;s $150. I&#039;ve wondered about back-flushing the fuel lines back into the tank, but I&#039;m not sure if that&#039;s worth the effort. Is there typically a filter of any kind at the tank end, like a simple debris screen? I&#039;m open to suggestions here. It&#039;s a B&amp;S Intek 20 HP V-Twin. I&#039;ve got the model, type, and code if that&#039;ll help anyone.Edit: Does the fuel shut-off solenoid screw off, or do I need a wrench? None of my wrenches are thin enough to fit between the solenoid and the bowl. Because I couldn&#039;t take the solenoid off, I didn&#039;t dip the bowl, thinking the Chem-dip would damage the plastic on the outside of the solenoid. If there&#039;s scale down in the bottom of the bowl, that&#039;s still going to restrict the fuel flow, isn&#039;t it?</blockquote>

[QUOTE="cmhbob, post: 1919696, member: 20220"] I am at my wit's end here. Since I got into this, I've siphoned the old fuel from the tank. and added 2 fresh gallons replaced the spark plugs replaced the fuel filter rebuilt the carb stripped the carb and soaked it in Chem-dip for 18 hours replaced the fuel pump Still no sustained run. I can get it going for 30 seconds or so if I run the fuel right down the breather throat. Replacing the pump gave us improved fuel flow, although the fuel filter still doesn't completely fill up. We tore the carb down as far as we could for the Chem-dip, including removing both flaps. The only thing we couldn't get out were the two brass jets. I just couldn't see how to remove them without damaging them. It's acting like it's starved for fuel, but the only thing left to change is the fuel lines. I think. I'd hate to replace the carb, since it's $150. I've wondered about back-flushing the fuel lines back into the tank, but I'm not sure if that's worth the effort. Is there typically a filter of any kind at the tank end, like a simple debris screen? I'm open to suggestions here. It's a B&S Intek 20 HP V-Twin. I've got the model, type, and code if that'll help anyone. Edit: Does the fuel shut-off solenoid screw off, or do I need a wrench? None of my wrenches are thin enough to fit between the solenoid and the bowl. Because I couldn't take the solenoid off, I didn't dip the bowl, thinking the Chem-dip would damage the plastic on the outside of the solenoid. If there's scale down in the bottom of the bowl, that's still going to restrict the fuel flow, isn't it? [/QUOTE]

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