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Those aren't fuel hoses. That's the vacuum connector for the vacuum modulator on the TH400
 

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Discussion Starter #3
thank you, I replaced them, plus the IP ?return line? At the top of the pump. Put on a new air filter, and tomorrow I get a new fuel filter/water separator to install. The engine rpms go up and down at idle, not sure at what I’m doing to fix it :(
 
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