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Fuel injection

Tiny
MICHAEL LECONA III
  • MEMBER
  • 1997 CHEVROLET LUMINA
  • 1.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 240,000 MILES
I got a leak on my fuel rail, but I changed my o-rings and bad injection.
Monday, January 20th, 2020 AT 12:24 AM

23 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I would remove the fuel rail completely and change the o-rings. The o-rings that need to be replaced are where the injectors meet the rail, not at the intake manifold. Fuel will not leak from there.

I attached pictures and the one where I circled the o-rings is the ones you need to replace.

Roy
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Monday, January 20th, 2020 AT 4:31 AM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
I did that. I got all new ones and they are squirting out everywhere all over the bottom part of the manifold.
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Monday, January 20th, 2020 AT 2:57 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
But yeah, it leaks from the top where you circle it.
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Monday, January 20th, 2020 AT 2:59 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, that is what I thought.

You need to remove the fuel rail from the car and do this on a bench. You remove the clip that is shown in the picture and the injector will come out.

When installing the new o-ring, use Vaseline to lubricate the o-ring so it does not get damaged when you push it up and in. Then reinstall the clip to hold it.

Roy
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Monday, January 20th, 2020 AT 3:16 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
Do you think the clips are damage that's why it's leaking?
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Monday, January 20th, 2020 AT 3:31 PM
Tiny
ASEMASTER6371
  • MECHANIC
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No, I think you may have damaged the o-rings if you did not lube them and make sure they were seated.

Roy
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Monday, January 20th, 2020 AT 3:43 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
Okay yup. Because I didn't lube them but there not cracked or broken.
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Monday, January 20th, 2020 AT 3:47 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Do you have it apart right now?

Roy
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Monday, January 20th, 2020 AT 3:51 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
Yes, but I haven't unbolted the fuel rail and taken off the injectors.
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Monday, January 20th, 2020 AT 3:53 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
Because there's nothing much more I can do everything is in tacked.
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Monday, January 20th, 2020 AT 3:54 PM
Tiny
ASEMASTER6371
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Okay, so you do not have it apart. Remove the rail and get a new set of o rings and let me know what you see.

If you can, upload some pictures of what you see.

Roy
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Monday, January 20th, 2020 AT 3:56 PM
Tiny
MICHAEL LECONA III
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  • 18 POSTS
Okay, will do.
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Monday, January 20th, 2020 AT 3:57 PM
Tiny
ASEMASTER6371
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Thank you.

Roy
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Monday, January 20th, 2020 AT 4:31 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
Okay, same thing happened except I didn't even make it out to the drive way.
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Monday, January 20th, 2020 AT 8:05 PM
Tiny
ASEMASTER6371
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Pictures as I asked for please.

Roy
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Monday, January 20th, 2020 AT 11:09 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
And I had to change my fuel rail. The guy that was working on it damaged one of the inserts where the fuel injector goes was pulling out the o-ring.
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Wednesday, January 22nd, 2020 AT 12:28 PM
Tiny
ASEMASTER6371
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Okay, did that resolve the issue?

Roy
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Wednesday, January 22nd, 2020 AT 12:45 PM
Tiny
ASEMASTER6371
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Did you respond? I got an email but nothing came through.

Roy
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Wednesday, January 22nd, 2020 AT 12:50 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
Yes it stopped leaking but my engine light came back on. I forgot to plug in my temperature gauge and I plugged it in and it turned off and now a couple miles after that it came on again.
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Wednesday, January 22nd, 2020 AT 12:51 PM
Tiny
MICHAEL LECONA III
  • MEMBER
  • 18 POSTS
And I'm not sure what this is if it needs to be connected or not.
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Wednesday, January 22nd, 2020 AT 12:53 PM

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