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

Start Up

Thread Tools
 
Search this Thread
 
Old Aug 6, 2012 | 09:37 PM
  #1  
BlackRoseNY92's Avatar
BlackRoseNY92
Thread Starter
Advanced
15 Year Member
All Eyes On Me
 
Joined: May 2009
Posts: 64
Likes: 4
From: Long Island New York
Default Start Up

I'm not sure how to explain my question. When I first start the car it starts up strong. Cranks right up! I'll drive it for a while shut down and then when I go to start it up it takes longer for it to crank. I would describe it as soft. Almost doesn't want to start. Then I almost break into that cold sweat. Yes! It starts

Just thought I'd throw this out there. Maybe someone has had a similiar situation. Or maybe I'm just

92 BlackRose
Reply
Old Aug 6, 2012 | 11:02 PM
  #2  
1986coupe's Avatar
1986coupe
Burning Brakes
15 Year Member
 
Joined: Jun 2003
Posts: 1,079
Likes: 1
From: Niagara Falls ON
Default

Heat affects the starter and the starter solenoid. How old are those parts on your car? That could be the reason.
Reply
Old Aug 7, 2012 | 12:22 AM
  #3  
Cliff Harris's Avatar
Cliff Harris
Race Director
15 Year Member
 
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Default

This UNANSWERED question has been posed many many times...

One interesting theory I've heard is that the injectors slowly leak fuel while the car is sitting overnight and allow the engine to start right away when it's cold. The amount of fuel that has leaked is minimal when the engine is hot, so it takes longer for it to start. One other aspect of this is that the cars up through '88 have a cold start injector that is disabled if the coolant temperature is over 95°.

A variation on this theory was proposed when people saw longer crank times after replacing injectors. Presumably the new injectors didn't leak...
Reply
Old Aug 7, 2012 | 10:05 AM
  #4  
lt4obsesses's Avatar
lt4obsesses
Le Mans Master
15 Year Member
 
Joined: Dec 2006
Posts: 5,139
Likes: 482
From: H-Town Texas
Default

Originally Posted by 1986coupe
Heat affects the starter and the starter solenoid. How old are those parts on your car? That could be the reason.
This is true. Although you didn't say, from your username I'm guessing it's a '92. This is the first production year of the LT1. There are two things that I would check first. The fuel pressure regulator, and the coil/icm. The coil and the Ignition Control Module are mounted on the passenger side head. The icm is especially affected by heat. This would cause warm start issues.

Cliff, I would think that fuel injectors leaking into the cylinders overnight would create a "flooded" condition, and actually hamper cold starts. Just a thought.
Reply
Old Aug 8, 2012 | 12:19 AM
  #5  
BlackRoseNY92's Avatar
BlackRoseNY92
Thread Starter
Advanced
15 Year Member
All Eyes On Me
 
Joined: May 2009
Posts: 64
Likes: 4
From: Long Island New York
Default

First I want to thank all for the replies. Kansas -Yes it is a 92. I had a MSD PRO-BILLET & MSD COIL installed this past Dec. along with Wires. You mentioned the coil & icm I will look into them. This didn't happen before the new coil.
The Starter & Solenoid is original but that sounds plausible also.
Reply

Get notified of new replies

To Start Up





All times are GMT -4. The time now is 08:59 AM.

story-0
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
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE