The s2ki search is down and I couldn't find anything on google. Anyone know of a DIY to change injectors? It doesn't look hard, I think I can do it. My only question really is when removing the fuel rail do I have to worry about fuel pressure or anything like that?

 

Disconnect the battery, you may have a little leakage for a second but no spraying or anything.

Ive done it on a friends car on the highway once long ago when his was leaking fuel bad. If i remember correctly its very easy straight forward. Just make sure you prime the injectors a few times before trying to start the car.

 

1. Do it in a well ventilated area.
2. Disconnect battery.
3. Cover with shop towel before you loosen the rail.
4. When you pull out the old injectors, make sure that none of the O-rings are left behind.
5. Before you put in the new injectors: LUBE THE NEW O-RINGS WITH A LIGHT COAT OF CLEAN MOTOR OIL. I skipped this step and cut an O-ring... spurting fuel everywhere when driving....
6. After reinstallation, connect battery.
7. Turn key on but don't start car. Wait 10 seconds. Turn car off.
8. Repeat step 7 to get fuel pressure up to speed.
9. Check for visible leaks.
10. Start car.
11. Check for visible leaks.

 

there is a process for relieving fuel pressure by loosening the fuel dampener, but then you have to replace two crush washers as the old ones will leak if you don't. You can do it without relieving fuel pressure but you might get more fuel leaking out, just use more towels. Do not create any sparks during the process as the fumes can get pretty strong, lots of ventilation is the key.

I just swapped some injectors on my car so the process is still fresh on my mind.

Getting the torque specs right for all of the little bolts and nuts on installation is pretty important. If you want to know the torque numbers hit me up. I ordered new o-rings (2 x 4 inj. ) for the injectors and coated them with oil on installation.

 

Another easy way to remove SOME of the fuel pressure is to just take off the gas cap while you do it. This will help a little.

 

Good thread! I'm installing my Greddy kit now and this helped a lot. Thanks!

I removed the gas cap and cranked the car with the fuel pump and ignition fuses pulled. Then I disconnected the battery, packed a bunch of blue Scott shop towels in around the fuel rail to catch any leakage and loosened the dampener to relieve pressure. Leakage was minimal, no worries.

I intended to pack more towels in under the rail before pulling it off, but got excited and forgot... Spilled the fuel that was left inside the rail onto the motor. Doh!

By the way, if you remove the fuel pressure regulator from the fuel rail, make sure not to lose the darn o-ring. Mine's lost now, so I scavenged one off an old injector that didn't quite fit. (Very bad idea; not sure it'll hold pressure.) I'd suggest leaving the FPR bolted up and instead just removing the hoses to it.