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

Will not start?

Thread Tools
 
Search this Thread
 
Old Apr 9, 2010 | 04:44 PM
  #1  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default Will not start?

I have a 94 LT-1 vette, Fuel psi is good & spark to the plugs, will not start!! Can any one tell what is going on? Thanks Gary.
Reply
Old Apr 9, 2010 | 06:32 PM
  #2  
CorvetteMike2024's Avatar
CorvetteMike2024
Corvette Enthusiast
Supporting Lifetime Gold
15 Year Member
 
Joined: Oct 2007
Posts: 6,797
Likes: 2,721
From: So. Cal.
2025 C7 of the Year Finalist- Unmodified
2024 C7 of the Year Finalist - Unmodified
2023 C7 of the Year Finalist - Unmodified
Default

Originally Posted by gcpoe10
I have a 94 LT-1 vette, Fuel psi is good & spark to the plugs, will not start!! Can any one tell what is going on? Thanks Gary.
Did it set any codes? Also possible VATS issue.
Reply
Old Apr 9, 2010 | 08:18 PM
  #3  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

No codes, I think your right wish i knew how to bypass that thing/ It was runing yesterday. New plugs compresson was good & good spark to plugs & fule pressure was good? 75k on the clock
Reply
Old Apr 9, 2010 | 08:35 PM
  #4  
jfb's Avatar
jfb
Team Owner
20 Year Member
 
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Default

Defective VATS will not allow the starter to crank the engine, so that leaves VATS out. Internal combustion engines require spark, spark at the right time, fuel and air and in the correct ratio and cylinder compression in order to start and run. Use your timing light to see if you have spark at the right time during cranking. Use a fuel pressure gauge to see if you have fuel pressure (35-42 psi) and to see if it holds up for a long time with the ign off. Rapid pressure drop could be due to leaky injectors. Get a noid light (auto parts store), or make one with an LED (light emitting diode) and a series 680 ohm 1/2 watt resistor and connect it across an unplugged injector plug and see if it pulses during cranking. Homemade light must have the correct polarity connection to the injector plug to work. Pull some spark plugs and measure compression. Come back when you have some answers.
Reply
Old Apr 9, 2010 | 08:54 PM
  #5  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

Thanks so much i will get started tomarow. And let you know. Thanks Gary in AZ.
Reply
Old Apr 9, 2010 | 09:34 PM
  #6  
rodj's Avatar
rodj
Le Mans Master
25 Year Member
 
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Default

Originally Posted by jfb
Defective VATS will not allow the starter to crank the engine, so that leaves VATS out. .
VATS takes out the injectors as well so if that component of VATS module faulty ,possible to have crank; no start because no injector pulse
Reply
Old Apr 9, 2010 | 09:58 PM
  #7  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

I will check injector pulse in the morning, Thanks for your help. & will keep you posted.
Reply
Old Apr 10, 2010 | 01:06 AM
  #8  
RRT vette's Avatar
RRT vette
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default

Shoot some starting fluid in the throttle body while someone cranks the engine. If it starts, you have a fuel problem.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

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

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

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

 Michael S. Palmer
Old Apr 10, 2010 | 02:14 AM
  #9  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

Thanks , I will try that , Hope it starts, I will let you know. Gary in AZ.
Reply
Old Apr 10, 2010 | 06:45 PM
  #10  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

Hey Guys, Pulled my opti off to day when i took off the cap water came out!! Well now i know why it diden't want to start, Do you think i can clean it up and put it back on or replace it?
Reply
Old Apr 10, 2010 | 08:49 PM
  #11  
murray59's Avatar
murray59
Instructor
 
Joined: Nov 2009
Posts: 124
Likes: 2
Default

Depends. How and when did you get water in the opti?
Reply
Old Apr 10, 2010 | 10:31 PM
  #12  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

Don't know for sure? Just bought this car, But you can see that it boiled over & I'm sure thats when it got wet looks good inside?

Last edited by gcpoe10; Apr 10, 2010 at 10:55 PM.
Reply
Old Apr 10, 2010 | 11:19 PM
  #13  
surfer92's Avatar
surfer92
Pro
 
Joined: Oct 2009
Posts: 679
Likes: 0
From: vero beach florida
Default

Is the engine turning over?

Is it water or coolant in the opti?

If it is coolant, just replace the opti.
Reply
Old Apr 10, 2010 | 11:49 PM
  #14  
gcpoe10's Avatar
gcpoe10
Thread Starter
Instructor
 
Joined: Nov 2004
Posts: 136
Likes: 0
From: Topock Arizona
Default

Yes turns over, I'm thinking coolant, I will start looking for a opti. Thanks for your help Gary.
Reply

Get notified of new replies

To Will not start?





All times are GMT -4. The time now is 07:35 AM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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