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

Fuel injector???

Thread Tools
 
Search this Thread
 
Old Jun 19, 2017 | 01:52 AM
  #1  
AHE jr's Avatar
AHE jr
Thread Starter
Navigator
 
Joined: May 2017
Posts: 9
Likes: 0
From: coquille or
Default Fuel injector???

I have a 92 lt1, 6speed, have changed out the opti, vented of course. Opti was toast, as was the water pump, fuel filter, plugs and wires. Still has a bit of a miss, almost like it is running on seven instead of eight. Started pulling EFI harness one by one while the engine was running. When I pulled #6, it actually seemed to run smoother at idle. At about 2000rpm and then putting the harness back on, the revs go down. Checked injector, it is functioning and there is 13.8-14v at the plug in.

Is this a weak injector or could the ICM be bad? I have not switched around injectors yet to see if it is that injector or just the #6 position. The plug wires are correct.

Thanks for any ideas
Reply
Old Jun 19, 2017 | 08:11 AM
  #2  
C409's Avatar
C409
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2005
Posts: 6,479
Likes: 565
From: Clearwater Florida
Default

..... You could do a compression check ... how does the #6 spark plug compare to others ? ... check your fuel pressure regulator .....
Reply
Old Jun 20, 2017 | 01:55 PM
  #3  
AHE jr's Avatar
AHE jr
Thread Starter
Navigator
 
Joined: May 2017
Posts: 9
Likes: 0
From: coquille or
Default Update

Thanks for the input C409. I did switch the #6 injector with the #4 and the problem followed to the #4 cylinder. I now have a set of Bosch type 3 on order.
Reply
Old Jun 21, 2017 | 09:19 PM
  #4  
JasBass's Avatar
JasBass
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2017
Posts: 343
Likes: 18
From: Newport News VA
Default

Originally Posted by AHE jr
Thanks for the input C409. I did switch the #6 injector with the #4 and the problem followed to the #4 cylinder. I now have a set of Bosch type 3 on order.
Had a similar issue and I went with the Bosch D3s, great choice. Everything runs smoother through all the rev ranges.
Reply
Old Jun 28, 2017 | 09:03 PM
  #5  
AHE jr's Avatar
AHE jr
Thread Starter
Navigator
 
Joined: May 2017
Posts: 9
Likes: 0
From: coquille or
Default

Cured, the new injectors took care of the problem.
Reply

Get notified of new replies

To Fuel injector???





All times are GMT -4. The time now is 01:07 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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