MSefi.com read only forum (Jan.15,2018)

hey everybody

I have -06 ss teflon lines and an fittings for my fuel system.
i bought this an test kit http://www.speedwaymotors.com/AN-Hos...660#tabcontent

i have ls1 injectors and rail stock that was machined with 14mm holes for the injectors.
so i put 70psi of air into the rail and i submerge the rail in water to check for leaks. i have one o ring that is leaking and i have air coming out of one of the electrical connectors as well.

so i have a few questions

1. are gasoline molecules larger and air molecules?
2.these are brand new injectors why is air coming out of the electrical connection??
3.are there any slightly larger fuel injector o rings for ls1 type injectors???
thanks brad

I suspect you've torn an O-ring. I've found that's pretty easy to do unless you lube them with a bit of motor oil before installation.