C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Fuel rail leaking. Please help!

Thread Tools
 
Search this Thread
 
Old Jan 23, 2008 | 06:16 PM
  #1  
JohnTheStigGalt's Avatar
JohnTheStigGalt
Thread Starter
Melting Slicks
Supporting Lifetime
10 Year Member
 
Joined: Jan 2003
Posts: 3,417
Likes: 2
From: Annapolis MD
Default Fuel rail leaking. Please help!

Here's the pic:



It's leaking right above the injector. Everything seems snug...

A few questions:

1) O-ring? Or other cause?

2) Tips on fixing? Special tool required?

3) Other than it being less than ideal to have fuel dumping onto the engine, can I drive it 10 miles to get to the base hobby shop (where it's warmer and well-lit)?

4) Anything else in the area I should replace while I'm at it?

TIA!
Vaughn
Reply
Old Jan 23, 2008 | 06:22 PM
  #2  
madmatt9471's Avatar
madmatt9471
Team Owner
Supporting Lifetime Gold
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Default

Originally Posted by SeaLawyer
Here's the pic:



It's leaking right above the injector. Everything seems snug...

A few questions:

1) O-ring? Or other cause?

2) Tips on fixing? Special tool required?

3) Other than it being less than ideal to have fuel dumping onto the engine, can I drive it 10 miles to get to the base hobby shop (where it's warmer and well-lit)?

4) Anything else in the area I should replace while I'm at it?

TIA!
Vaughn
With out being able to see under the actual tube, my best guess by the looks of it, seems to be on the weld of the tube coming down off the fuel rail itself.

It might be best to "NOT" have it welded and just replace the rail itself! They are cheap and someone should have one laying around that could send it to you.

Post in the For Sale Section and ask if someone has one to sell!

Thanks,Matt
Reply
Old Jan 23, 2008 | 06:27 PM
  #3  
JohnTheStigGalt's Avatar
JohnTheStigGalt
Thread Starter
Melting Slicks
Supporting Lifetime
10 Year Member
 
Joined: Jan 2003
Posts: 3,417
Likes: 2
From: Annapolis MD
Default

Thanks Matt. I guess I could have taken a better pic of it. I presume the 'weld' you're talking about is where the vertical and horizontal section meet? It's actually not leaking there -- it's leaking where the thing clips onto the injector. But the clip seems tight as do the fuel rail bolts.
Reply
Old Jan 23, 2008 | 06:35 PM
  #4  
madmatt9471's Avatar
madmatt9471
Team Owner
Supporting Lifetime Gold
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Default

Originally Posted by SeaLawyer
Thanks Matt. I guess I could have taken a better pic of it. I presume the 'weld' you're talking about is where the vertical and horizontal section meet? It's actually not leaking there -- it's leaking where the thing clips onto the injector. But the clip seems tight as do the fuel rail bolts.
Okay! then what you want to do is got to the Auto store and get a set of O-Rings for FUEL INJECTORS! they should be in the HELP section - they come in a small variety pack.

First releive the pressure from the rail at the front on the shrader valve into a rag!

Undo the bolts holding down the fuel rail and then gently pry up the fuel rail go straight to the one leaking and undo the clips and pull the injector and install the new ring on it.

Put a small amount of oil on the ring in order for it to slip in easier and then reinstall the rail.

Now that will take care on the one but at this point you can do them all by picking up the O-Ring kit! They are real easy to do and are not time sonsuming!

That should take care of the leak

Thanks,Matt
Reply
Old Jan 23, 2008 | 06:46 PM
  #5  
JohnTheStigGalt's Avatar
JohnTheStigGalt
Thread Starter
Melting Slicks
Supporting Lifetime
10 Year Member
 
Joined: Jan 2003
Posts: 3,417
Likes: 2
From: Annapolis MD
Default

Sweet! Thanks! I actually picked up a pack of o-rings from NAPA when I first smelled the leak, thinking it was probably the fuel filter (which needed replacing anyway) - but I only have 4 o-rings in 2 sizes. Do you think I'd be fine to just replace the one, at least to be able to drive it to work tomorrow, where I can throw it up on a lift tomorrow during lunch and do the fuel filter also?
Reply
Old Jan 23, 2008 | 06:54 PM
  #6  
TEXHAWK0's Avatar
TEXHAWK0
Le Mans Master
15 Year Member
 
Joined: Sep 2003
Posts: 8,847
Likes: 795
From: Longview Texas
Default

If I were going to pull the fuel rail for a leaking o-ring, I would get enough to replace them all. The other o-rings may start leaking once you pull the rail.
Reply
Old Jan 23, 2008 | 07:00 PM
  #7  
JohnTheStigGalt's Avatar
JohnTheStigGalt
Thread Starter
Melting Slicks
Supporting Lifetime
10 Year Member
 
Joined: Jan 2003
Posts: 3,417
Likes: 2
From: Annapolis MD
Default

Yeh, that's what I was afraid of... What happens if I drive with it that way for 10 miles (other than REALLY BAD GAS MILEAGE)?

Anyone know the o-ring size? The fuel filter has 2 sizes - 5/16" and 3/8" but the fuel rail almost looks bigger than that...

I suppose I could hit NAPA first thing in the AM (in wife's car) and then be a little late to work.
Reply
Old Jan 23, 2008 | 09:10 PM
  #8  
JohnTheStigGalt's Avatar
JohnTheStigGalt
Thread Starter
Melting Slicks
Supporting Lifetime
10 Year Member
 
Joined: Jan 2003
Posts: 3,417
Likes: 2
From: Annapolis MD
Default

Originally Posted by madmatt9471
They are real easy to do and are not time sonsuming!
Ahhh... famous last words...

I'm going to go ahead and guess that this isn't very good:



Different one than the one that was leaking - I decided to pull them all and replace all the o-rings. Most of the o-rings weren't in great shape, btw - cracked and gnarly looking. Car only has 70K miles.


So I reckon I need to buy a whole new injector?


Now the million-dollar (and also maybe stupid) question: Do I need to pull the intake to try to find the little chip of plastic?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jan 23, 2008 | 09:18 PM
  #9  
euro@EFIAlchemy.com's Avatar
0euro@EFIAlchemy.com
Former Vendor
 
Joined: Apr 2007
Posts: 1,331
Likes: 4
From: Jacksonville Florida
Default

Originally Posted by SeaLawyer
Ahhh... famous last words...

I'm going to go ahead and guess that this isn't very good:



Different one than the one that was leaking - I decided to pull them all and replace all the o-rings. Most of the o-rings weren't in great shape, btw - cracked and gnarly looking. Car only has 70K miles.


So I reckon I need to buy a whole new injector?


Now the million-dollar (and also maybe stupid) question: Do I need to pull the intake to try to find the little chip of plastic?
Ouch, hate to see that.

I would be lookin pretty hard for that piece of plastic, if your confident it did not fall off outside of the motor, then i dont think id start the car till i found it.
Reply
Old Jan 24, 2008 | 11:54 AM
  #10  
JohnTheStigGalt's Avatar
JohnTheStigGalt
Thread Starter
Melting Slicks
Supporting Lifetime
10 Year Member
 
Joined: Jan 2003
Posts: 3,417
Likes: 2
From: Annapolis MD
Default

Looked today in daylight. Definitely not outside the motor... Looks like I'll be pulling the intake at least. Ordered the needed parts from RockAuto. I can't believe the o-rings are SO EXPENSIVE! Dealer wanted $80 for the pack of 16. RA was $50 and even that seems high!
Reply
Old Feb 2, 2008 | 10:13 AM
  #11  
randy814u's Avatar
randy814u
Melting Slicks
15 Year Member
 
Joined: Oct 2001
Posts: 2,320
Likes: 2
From: Salem Oregon
Default

I would think that small piece of plastic has already been sucked into the engine, and spit out the exhaust.

Anyone know what size the orings are?

Randy
Reply

Get notified of new replies

To Fuel rail leaking. Please help!





All times are GMT -4. The time now is 12:31 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE