[Z06] Does your vette fire-right up or
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 2,334
Likes: 11
From: las vegas nv.
Racer
Joined: Nov 2009
Posts: 438
Likes: 0
From: Cypress Texas
Melting Slicks
Joined: Jul 2010
Posts: 3,355
Likes: 113
From: Los Angeles
I drive mine pretty much every day, and it almost always fires right up. Maybe like once a month though it'll take 1-2 seconds. My battery is the factory original but my voltage levels are normal, so I've had no reason to replace it.
Safety Car
Joined: Mar 2004
Posts: 4,434
Likes: 18
From: Bartlett IL
St. Jude Donor '07-'08-'09-'10-'11
The battery has nothing to do with how quickly it fires up... if its turning the engine its working... Fuel, spark and air dictates how quickly it fires up.
This is what I've noticed with my different set ups.
LS6 engine.. fired up by the 2nd or 3rd turn over.
LS6 engine + A&A kit.. it was crazy how fast it fired up and I have no idea why.. but it seemed like I barely had a chance to really turn the key before it was already running.. this was even after each winter of sitting in storage.
LS7 engine.. ha! This thing takes 4-6 turn overs to finally fire up. But I've noticed my friends C6Z's are similar.
This is what I've noticed with my different set ups.
LS6 engine.. fired up by the 2nd or 3rd turn over.
LS6 engine + A&A kit.. it was crazy how fast it fired up and I have no idea why.. but it seemed like I barely had a chance to really turn the key before it was already running.. this was even after each winter of sitting in storage.
LS7 engine.. ha! This thing takes 4-6 turn overs to finally fire up. But I've noticed my friends C6Z's are similar.
Last edited by PeteZ06; Aug 7, 2012 at 11:22 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Instructor
Joined: Feb 2012
Posts: 196
Likes: 0
From: Abilene TX
I dont know if batteries do or do not have anything to do with it. Last month my battery was weak (and finally gave out) my Z would take a few cranks to fire, but as soon as i changed it, it was almost instant. Only about once a month ill start it and it will hick-up a little then be normal in the next second. I have a V/R intake, and full exhaust
Pro
Joined: Dec 2011
Posts: 514
Likes: 3
From: Levittown NY
Mine is heavily modified and also takes a little bit to get started. I can bet you it is due to fuel pressure. I always let my pump prime before starting, but I noticed that on the gauge I have mounted under the hood, the fuel pressure will bleed off fairly quick while sitting off. My fuel system was converted into the 97-98 return style system. I don't know if the 99-up returnless systems do the same thing and drain back when off.
Another thing to check is maybe the crank and cam sensors?
Definitely subscribing to get more input on this. Mine does bug me a bit and would be nice to have the instant fire up.
Another thing to check is maybe the crank and cam sensors?
Definitely subscribing to get more input on this. Mine does bug me a bit and would be nice to have the instant fire up.
Le Mans Master
Joined: Oct 2001
Posts: 5,145
Likes: 125
From: The Motor City
When was the last time you changed your air filter and fuel filter? As stated above, you need fuel, air, and spark for combustion. Take away (or limit) one of them and your car will be harder to start.
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
*knock on wood* 
I have had my 04 Z06 for 8.5 years now (since new). The only time it ever hesitated was when my stock battery died 3.5 yrs ago. Stock one lasted 5 yrs. I have a 3.5 yr old battery in there now, and I keep it on the battery tender here and there. Still starts up "Very" quickly.
Toque
I have had my 04 Z06 for 8.5 years now (since new). The only time it ever hesitated was when my stock battery died 3.5 yrs ago. Stock one lasted 5 yrs. I have a 3.5 yr old battery in there now, and I keep it on the battery tender here and there. Still starts up "Very" quickly.
Toque
Safety Car
Joined: Mar 2004
Posts: 4,434
Likes: 18
From: Bartlett IL
St. Jude Donor '07-'08-'09-'10-'11
I'm wondering what's best for the engine... An instant fire up where the cylinder walls are not so well lubricated... Or a couple slower turnovers of the engine allowing the cylinder walls to get a better coating before firing up. I'm sure this makes no difference if your car gets used everyday, but if you're like me and start it up maybe every 2-3 weeks then it might matter.
Instructor
Joined: Nov 2011
Posts: 224
Likes: 1
From: Charlotte NC
Always less than a second on mine for the last 20K miles.
________________________________________ ___
A few reasons I have always had to have a day job:
http://soundcloud.com/theofly
________________________________________ ___
A few reasons I have always had to have a day job:
http://soundcloud.com/theofly
Instructor
Joined: Dec 2007
Posts: 231
Likes: 10
From: NH
All of ours fire right up. I would check fuel pressure in the rails it should not bleed off.
Try turning the key to on till the pump cycles off then turn key to off and right away try to start the car if it fires quickly the rail is bleeding off to the tank..Check the fuel pressure regulator.
If it cranks a bit then starts it most likely bled off thru the injectors and slightly fouled the cylinders with fuel. You could try a fairly aggressive injector cleaner and see if it helps get the pintles to seal or replace the injectors.... But you have to decide if the fix is worth it. Or is the starting issue not that big a deal to you.
Try turning the key to on till the pump cycles off then turn key to off and right away try to start the car if it fires quickly the rail is bleeding off to the tank..Check the fuel pressure regulator.
If it cranks a bit then starts it most likely bled off thru the injectors and slightly fouled the cylinders with fuel. You could try a fairly aggressive injector cleaner and see if it helps get the pintles to seal or replace the injectors.... But you have to decide if the fix is worth it. Or is the starting issue not that big a deal to you.
