Large gas leak

Hi and thanks for using 2CarPros.com.

First, if you replace the injectors, there are rubber o-rings which seal them between the engine and the fuel rail. Check them first to make sure none are leaking. Also, when you disconnected the fuel line from the fuel rail, confirm that there is no leak at that point.

Here are general directions for replacement of fuel injectors. Take a look through it to determine if something that you did or didn't do may have caused the leak.

https://www.2carpros.com/articles/how-to-replace-a-fuel-injector

I have attached pictures of the quick connect fittings to the fuel rail. It is easy to damage the o-ring in it when putting it back together. It should be lubricated with a small amount of oil before reconnecting. Also, when you reconnect it, you should hear a click. Take a look at the pictures. The last picture is of the tops of the injectors where they attach to the fuel rail. You should always replace the o-rings and the injector should turn smoothly in the rail.

I hope this is helpful. Let me know if you can determine where the leak is coming from. Since it is running down the back of the engine, I suspect it is the supply line and when you reconnected it, either the connector did not fully engage or the o-ring is damaged.

Take care,
Joe