Review on OTC 7433 Fuel Return Line by Elder Unogu

This thing works great. Small, blocks the return line so you can check for leaks from the regulator, injectors, and fuel pump check valve. You can and will turn off the fuel pump and pressurize it to the max, so don't start the car with that pump. This allows you to check the maximum performance of the pump, but you should only do this for a short time. Lubricate the o-rings with a little petroleum jelly each time you reinstall this line or the stock line to prevent damage. I believe removing the fuel line requires a 3/8 spring detent tool. The white part is plastic. Ford Rotunda makes the same tool but with a longer metal cover. If you are interested in Ford diagnostics, buy it. They are cheap!