Kevin in Atlanta

I typically pressurize the fuel rail by pulling the relay and jump 30 and 87 long enough to get 50+ PSI on my pressure gauge attached to expose fuel leaks when installed refurbished injectors. Most of the time there's no drama.

In this case the #5 puddled at the base of the injector after sitting overnight. I pulled the rail, replaced top and bottom o-rings, reassembled and pressurized the rail and the same thing happened again.

My understanding is that the injector is closed by default. So, there no way fuel could travel up the injector. I believe the injector itself is leaking above the o-ring.

Is this a documented failure?

Billu

Kevin in Atlanta

So, that seals it.

Thanks.

SeanR

Yep, had a few over the years. That's why it's important to test the system as you did.

worf928

Kevin in Atlanta

Well, had a injector refurbished and pressure is holding near 55psi for the past 15 minutes, I'll circle back later to see how it's doing.

I would like to point out a couple of things. One, order and use or supply the o-rings available from Roger. On three attempts I had a blowout from top o-rings provided by my injector refurb folks. I swapped theirs for Roger's and that worked.

Even though the o-rings looked the same they aren't?

Two, leave the rail pressurized overnight. This is not my normal practice, but because I had to wait for some parts I was lucky to see the pooling in the #5 injector hole.

Just my random thoughts.

Billu

Kevin in Atlanta

This morning I found another injector hole with a puddle of gas around it. From this has never happened to 2 in the same rebuilt set. Makes me wonder.

More time to replace the injector harness ends I guess.