Hello,
I've installed a 455 engine in an 84 Cutlass and have a problem with fuel percolation. Causing poor idling and hard start up. I've insulated fuel lines, wrapped exhaust headers, and installed an insulating spacer under the carb. Limited hood clearance restricted the spacer to 1/4 inch. These steps helped. But driving in Central Florida heat makes the problem worse. I've read that a bypass fuel regulator would help. Does anyone have experience with this? Can the fuel return line from the mechanical fuel pump be teed for the regulator bypass return line? I believe this would help with hot idle, but would this help with hot startup?
I've installed a 455 engine in an 84 Cutlass and have a problem with fuel percolation. Causing poor idling and hard start up. I've insulated fuel lines, wrapped exhaust headers, and installed an insulating spacer under the carb. Limited hood clearance restricted the spacer to 1/4 inch. These steps helped. But driving in Central Florida heat makes the problem worse. I've read that a bypass fuel regulator would help. Does anyone have experience with this? Can the fuel return line from the mechanical fuel pump be teed for the regulator bypass return line? I believe this would help with hot idle, but would this help with hot startup?