C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Emission Line Routing

Thread Tools
 
Search this Thread
 
Old Mar 6, 2009 | 02:57 PM
  #1  
jimg's'93's Avatar
jimg's'93
Thread Starter
Drifting
 
Joined: Nov 2005
Posts: 1,324
Likes: 5
From: Charlotte NC
Default Emission Line Routing

Any chance someone out there has a schematic or pictures of the proper routing of the emission lines running from the intake plenum on an LT1 ('93)? I recently installed new injectors and since then I get a very high-pitched squeel when I shut her down. She's also running a bit erratic. When I wiggle the vac lines on the passenger side of the plenum, the pitch alters; it's obvious that's the source of the pitch. I've got all new fittings and lines to replace these with, but I'd like to be sure I haven't run the old lines incorrectly.

Thanks for any help/direction!
Reply
Old Mar 6, 2009 | 03:32 PM
  #2  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Originally Posted by jimg's'93
Any chance someone out there has a schematic or pictures of the proper routing of the emission lines running from the intake plenum on an LT1 ('93)? I recently installed new injectors and since then I get a very high-pitched squeel when I shut her down. She's also running a bit erratic. When I wiggle the vac lines on the passenger side of the plenum, the pitch alters; it's obvious that's the source of the pitch. I've got all new fittings and lines to replace these with, but I'd like to be sure I haven't run the old lines incorrectly.

Thanks for any help/direction!
It should be on your radiator shroud, that's where this came from.

Reply
Old Mar 6, 2009 | 04:25 PM
  #3  
jimg's'93's Avatar
jimg's'93
Thread Starter
Drifting
 
Joined: Nov 2005
Posts: 1,324
Likes: 5
From: Charlotte NC
Default

Yes, I have that and have everything running accordingly. There is however a second fitting above where the FPR line runs into the plenum. This line has a check valve (which was cracked and replaced) and eventually goes to 2 other destinations. I can't see where they should go and it's not shown on the label. That line appears to be making the squeel.
Reply
Old Mar 6, 2009 | 04:30 PM
  #4  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Originally Posted by jimg's'93
Yes, I have that and have everything running accordingly. There is however a second fitting above where the FPR line runs into the plenum. This line has a check valve (which was cracked and replaced) and eventually goes to 2 other destinations. I can't see where they should go and it's not shown on the label. That line appears to be making the squeel.
One goes to the cruise servo, the other goes inside to the A/C.
Reply
Old Mar 6, 2009 | 09:13 PM
  #5  
jimg's'93's Avatar
jimg's'93
Thread Starter
Drifting
 
Joined: Nov 2005
Posts: 1,324
Likes: 5
From: Charlotte NC
Default

Thanks!
Reply

Get notified of new replies

To Emission Line Routing





All times are GMT -4. The time now is 01:42 PM.

story-0
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-1
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-2
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-3
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
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE