Small Block & Big Block Chevy Specific - Fuel Return Line

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12-27-2007, 07:30 PM
How important is the fuel return line because it was plugged when I got the truck and didnt know if you keep it plugged or to go ahead and run the line.I am going to be driving it every day and I want it to be right. Thanks

12-27-2007, 07:52 PM
What kind of truck? Fuel injection, TBI, or carb?

12-27-2007, 08:01 PM

12-27-2007, 08:13 PM
If you have an electric fuel pump I wouldn't worry about it, but if you have a mechanical pump you could start vapor locking during the summer time.

12-27-2007, 08:17 PM
I have a mechanical fuel pump.I didnt know if it would give to to much gas to the engine.

12-27-2007, 08:34 PM
Depends on the type of carb.