The Stovebolt Site Forums The Shop Area Engine Shop v6 vaporlock

I'm assuming that the sender is in the tank. Most senders are connected to the hard fuel lines eith flexible hose thei hose has to be removed from the old sender and connected to the new sender. The hose is flexed a lot during this procedure it can crack and break or loosen at the fuel line. Or people like me can forget to tighten the clamp at the sender . All of the above can cause a vacuum leak which will cause the fuel pump to pump air instead of fuel. Viola faux vapor lock. Or as previously stated vapor lock like symptoms. And of course the pump could have crapped out.