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

1993 lt1

Thread Tools
 
Search this Thread
 
Old Dec 25, 2021 | 06:31 AM
  #1  
ME93's Avatar
ME93
Thread Starter
Instructor
 
Joined: Mar 2021
Posts: 170
Likes: 26
From: guam
Default 1993 lt1

Made a hard pass and after felt little shaky at idle and started running rough and.smoking left muffler only.

Pulled.over found dampner slight wobble. anyone have loose crank pulley dampner bolts?

Shut car off now hard starting. Pulled injector plugs while.running and found 3rd injector no response. what is the result of stuck injector open ? thanks guys.

Last edited by ME93; Dec 25, 2021 at 05:25 PM.
Reply
Old Dec 25, 2021 | 08:52 AM
  #2  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,895
Likes: 592
From: New Port Richey FL
Default

If you have loose balancer bolts tighten them up before you oblong the bolts holes or have things fail.
Now the injector, first off the fuel rail pressure charge would be lost to the one or two stuck cylinders which would lead to a hard start as well gas running down cylinder walls thinning the oil with gas.(not good) Once running if they are truly stuck open it could keep needed pressure from other injectors causing poor performance, even though the pump volume would compensate and once again the thin oil because the stuck cylinders can't keep up on a good burn.

Last edited by s carter; Dec 25, 2021 at 03:39 PM.
Reply
Old Dec 25, 2021 | 03:24 PM
  #3  
Kevova's Avatar
Kevova
Le Mans Master
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Default

Injector problem shouldn't cause pulley bolts to loosen. Any previous repairs involving Opti? Pulley needs to be removed to change or check cap & rotor.or replace Opti
Reply
Old Dec 27, 2021 | 06:22 AM
  #4  
ME93's Avatar
ME93
Thread Starter
Instructor
 
Joined: Mar 2021
Posts: 170
Likes: 26
From: guam
Default

hooked up fuel pressure tester and fuel drops to zero as soon as i turn off engine.
Reply
Old Dec 27, 2021 | 09:47 AM
  #5  
Whaleman's Avatar
Whaleman
Safety Car
Liked
Loved
Community Favorite
Top Answer: 3
 
Joined: Mar 2017
Posts: 4,202
Likes: 1,323
From: LeClaire Iowa
Default

You need to attack these three problems one at a time.

Last edited by Whaleman; Dec 29, 2021 at 07:35 AM.
Reply
Old Jan 1, 2022 | 02:22 AM
  #6  
ME93's Avatar
ME93
Thread Starter
Instructor
 
Joined: Mar 2021
Posts: 170
Likes: 26
From: guam
Default

thanks for all the help guys.
Reply
Old Jan 2, 2022 | 05:34 AM
  #7  
ME93's Avatar
ME93
Thread Starter
Instructor
 
Joined: Mar 2021
Posts: 170
Likes: 26
From: guam
Default

noid test passed all receving power and pulsing

what injectors do you reccomend to replace gm junk from factory ?

Last edited by ME93; Jan 2, 2022 at 06:17 PM.
Reply

Get notified of new replies

To 1993 lt1





All times are GMT -4. The time now is 10:49 PM.

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