Failing fuel pump

[TJ]

O.K. have you ever used silicone sealant anywhere the fuel system? It's a NO NO, as it turns to snot from the gas and can easily cause you a fuel delivery problem. Had a similar problem years ago and the prior owner used silicone on the sending unit gasket and on the drain plug. The stuff turned to jelly and would periodically plug to fuel line. If you have dual exhaust how close is it to the fuel line?