GSL-SE - Checking for fuel leaks
 

I changed out my injectors now I'd like to double check for fuel leaks...I've read before that I can close the circuit for the fuel pump and turn the key to on and I'll see if there is one when the car is apart to this level...

https://www.rx7club.com/attachment.p...id=92256&stc=1

Question is...

Won't this flood the engine? I'm not driving the car during the winter so any fuel left in there will be there for some time...is this safe? Can/should this be done?

Thanx

no fuel will go in unless you try to crank it. just pressurizing it is fine.
by changing out you mean you had them cleaned and tested?

It will be fine. The only way that this would flood the engine is if one or both of the injectors were leaking though the pintle (tip of injector). To test for leaks, you have a couple options:

1. Jumper the connector with the rubber boot next to the AFM. Turn the key to the 'ON' position and the fuel pump will run. The fuel will just circulate through the fuel rail and back to the tank. Let run for a couple minutes and see if you have any leaks present.

2. Instead of jumping the connector, just prop the AFM door open and turn the key to the 'ON' position. The rest of the testing is the same as in option 1. If you do it this way, just remember to take out whatever you use to hold the door open with. The best bet is to just have a friend hold it open for you while you check for leaks.

Kent

Addict is once again dead-right in this regard.

I would only add that if you ever do injector work, you should pressure test the system using the 'jumper' method or AFM method just to be sure that it's all sealed up well. Nothing hurts more than getting the Upper Intake Manifold back on only to find that you're spraying fuel from an injector top seal or the fuel rail...

Better to test it and be able to fix it right away. HTH,

thats exactly what i was thinking...i had the injectors cleaned and tested and replaced them with the old ones...i wanted to test for leaks before putting everything else back on...

thanx guys

Just make sure you lube the o-rings before assembly, vasoline works. I learned the hard way.

I tested it last night and I heard the fuel pump turn on, heard the fuel start filling the hoses and fuel rail and done...no leaks, not even the smell of fuel like I had before with the old injectors... :D

I did that this time...last time I didn't and turns out that I ripped the o-ring putting the fuel rail over it last time which is what caused my small leak...

thanx again everyone...i can't wait till march when i'm back on the road again...:bigthumb: