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

Need help ASAP!

Thread Tools
 
Search this Thread
 
Old Sep 1, 2008 | 09:46 PM
  #1  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default Need help ASAP!

Driving home tonight for about 25 min.'s, everything fine, stopped at Shell and got 93, went a few miles and stopped at a light. After a few seconds car started sputtering, wanting to die, check engine light came on, and loud metal ticking sound (like a fan hitting something) from motor area. I got it in the driveway and shut it off, felt like it hardly had any power. Started it twice more and had to give it gas to keep it running, same ticking sound. Didn't want to run it long or move it.

Does this sound like a serious motor problem, or bad gas or what?
Again it was fine until a few miles after getting gas.
Reply
Old Sep 1, 2008 | 09:48 PM
  #2  
NEVRL8T's Avatar
NEVRL8T
Race Director
 
Joined: Mar 2006
Posts: 11,628
Likes: 1
From: Sherwood, Arkansas
Default

Throwing any codes?
Reply
Old Sep 1, 2008 | 09:49 PM
  #3  
STL94LT1's Avatar
STL94LT1
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
Default

Check the codes!!
Reply
Old Sep 1, 2008 | 10:20 PM
  #4  
engle1147's Avatar
engle1147
Le Mans Master
Supporting Lifetime
 
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Default

Originally Posted by STL94LT1
Check the codes!!


Check for codes first.
Sounds like bad(H20) gas.............."Shell with Techroline!"
Reply
Old Sep 1, 2008 | 10:53 PM
  #5  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default

Have not checked for codes yet.
Would bad gas cause such a loud clicking sound?
Should I add octane booster? Think it is OK to run?
Reply
Old Sep 1, 2008 | 11:02 PM
  #6  
BlackHarleyMan's Avatar
BlackHarleyMan
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2006
Posts: 1,740
Likes: 2
From: Winchester Virginia
Default

Originally Posted by 95wht6spd
Have not checked for codes yet.
Would bad gas cause such a loud clicking sound?
Should I add octane booster? Think it is OK to run?
Check your codes first, then that'll hopefully give you an idea of where the source of the problem is. HOPEFULLY!......... Bad gas can make these cars act crazy, and even knock unexpectedly, so please don't rule that out. But before you start down the path of an engine problem, just see what she's (Your Baby) is telling you and then go from there. I hope it's not a serious problem but I'll wait to see how this turns out! Goodluck Bro!

R/Noland

P.S. Keep ya head up!
Reply
Old Sep 2, 2008 | 12:33 AM
  #7  
MikeC4's Avatar
MikeC4
Melting Slicks
 
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Default

Originally Posted by 95wht6spd
Have not checked for codes yet.
Would bad gas cause such a loud clicking sound?
Should I add octane booster? Think it is OK to run?
I know you are hoping for "just got some bad gas" solution. But that loud clicking sound is worrisome. Have you checked your oil level ?

As stated, check for error codes(short pin4 and pin12 on ALDL, ignition on(but don't start engine), record errors from digital display. Also, try to locate the vacinity of where this "loud clicking" is coming from.

I would definately not drive the car until you have more information. If you drive it, and it turns out to be something more than just bad gas, you could do a lot more damage to your engine.

Reply
Old Sep 2, 2008 | 03:27 AM
  #8  
Zix's Avatar
Zix
Le Mans Master
15 Year Member
 
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Default

What part of the engine is it coming from? I recently had a bad ticking noise and turned out to be a broken spring retainer...hopefully yours turns out better than mine was!
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Sep 2, 2008 | 12:23 PM
  #9  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default

I am going to check the codes and the fuel for water when I get home. I hope that is all it is....
Reply
Old Sep 2, 2008 | 12:49 PM
  #10  
bobmic93's Avatar
bobmic93
Melting Slicks
 
Joined: Jul 2004
Posts: 2,695
Likes: 0
From: Chicago Illinois
Default

Im thinking fuel pump or fuel filter. Did you run way low on gas and possibly clog the fuel filter. Also look closely to see on the bottom side of all your plug wires arent fouling out on a hot header pipe.
Reply
Old Sep 2, 2008 | 02:07 PM
  #11  
jaa1992's Avatar
jaa1992
Le Mans Master
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
Default

Pull the historical codes using the paperclip.
Post codes found.
If fuel filter is original replace it.

Have the ICM and coil checked as well.
One time my 92 just flat died, thought it was the opti. Someone suggested replacing the coil and that did the trick until the water pump went.
Reply
Old Sep 2, 2008 | 02:53 PM
  #12  
MikeC4's Avatar
MikeC4
Melting Slicks
 
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Default

Originally Posted by 95wht6spd
I am going to check the codes and the fuel for water when I get home. I hope that is all it is....
I am curious, how will you check for water in your fuel ?

Are you going to try a bottle of dry gas to see if the symptoms change ?


Last edited by MikeC4; Sep 2, 2008 at 03:00 PM.
Reply
Old Sep 2, 2008 | 06:46 PM
  #13  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default

OK, removed valve cover and I have a broken spring and retainer....great.
These are CC 918 behives on LE2 heads, less than 16K miles and 2 years old! I know the originals had issues, but I thought these would be OK.

I will take the car to my mechanic ASAP and have him go through for damage. What is the likelyhood that I have piston damage? ZIX I know you had the same issue, what else was damaged?

So here is the big question, should I do a stroker if there is piston damage, or even if there is not? It has about 116K on the motor now, I don't want to have to do this again in 20-30k miles.
Reply
Old Sep 2, 2008 | 07:08 PM
  #14  
engle1147's Avatar
engle1147
Le Mans Master
Supporting Lifetime
 
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Default

That sucks guy.

Maybe get a hold of bore scope and have a look inside...before you do a tear down.
Reply
Old Sep 2, 2008 | 07:54 PM
  #15  
Zix's Avatar
Zix
Le Mans Master
15 Year Member
 
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Default

Originally Posted by 95wht6spd
OK, removed valve cover and I have a broken spring and retainer....great.
These are CC 918 behives on LE2 heads, less than 16K miles and 2 years old! I know the originals had issues, but I thought these would be OK.

I will take the car to my mechanic ASAP and have him go through for damage. What is the likelyhood that I have piston damage? ZIX I know you had the same issue, what else was damaged?

So here is the big question, should I do a stroker if there is piston damage, or even if there is not? It has about 116K on the motor now, I don't want to have to do this again in 20-30k miles.
First thing you need to do, obviously is determine is there is more damage. Did the valve drop? If the valve is still up then you need to hook that cylinder up to some compressed air and preform a leak down to ensure the valve is not bent. Compare the results with the other 3 cylinders on that side of the engine. Was it an intake or exhaust valve?

If the valve dropped you could have piston and head damage and a complete tear-down is pretty much necessary. However, from what you said I don't think that the valve dropped...you would have had a much more noticeable problem.

When my retainer broke the valve did not drop, it was held in place by the inner spring (I am running dual springs).

Are you running steel or Ti retainers? Good luck! Let me know if I can be of any help!
Reply
Old Sep 2, 2008 | 08:47 PM
  #16  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default

I need to go and luck more closely at the valves.
They were CC steel retainers.

I spoke to LLoyd and he said the same thing you did. He recommended the Patriot Gold Extreme dual springs, what do you think?
Reply
Old Sep 2, 2008 | 09:03 PM
  #17  
Zix's Avatar
Zix
Le Mans Master
15 Year Member
 
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Default

Originally Posted by 95wht6spd
I need to go and luck more closely at the valves.
They were CC steel retainers.

I spoke to LLoyd and he said the same thing you did. He recommended the Patriot Gold Extreme dual springs, what do you think?
I don't know anything about those springs, but Lloyd knows the cam you have and the spring pressure necessary to control the valves. I would take his recommendation, or call Comp, Isky, etc and see what they have as a similar spring. I run Isky springs personally.

If everything in the motor is okay you'll need springs, retainers, and valve locks. Also, you may need to replace the valve seal where the spring broke, and also look very closely at the rocker. Mine got pretty banged up so i replaced it as well.

Good luck!!
Reply

Get notified of new replies

To Need help ASAP!

Old Sep 2, 2008 | 10:28 PM
  #18  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default

Do you have the high $ Isky Tool Room springs?
RR looks OK.
Valve is down in the hole, can see just the top of stem in the guide.
It is the passenger side head, and the left valve of the pair, don't know if that is intake or not.
Reply
Old Sep 2, 2008 | 11:12 PM
  #19  
Zix's Avatar
Zix
Le Mans Master
15 Year Member
 
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Default

Originally Posted by 95wht6spd
Do you have the high $ Isky Tool Room springs?
RR looks OK.
Valve is down in the hole, can see just the top of stem in the guide.
It is the passenger side head, and the left valve of the pair, don't know if that is intake or not.
If the valve is down in the hole you might have some problems. Not only is it more likely there is more internal damage, but if you can't get a grip on the valve to pull it abck up you'll need to pull the head off to get to it. I was lucky because of the dual springs, the inner spring actually held the valve up from falling into the cylinder. The springs that I am running are part Isky #8005-A. Not very expensive actually.

Did you break a spring AND retainer, or just one or the other?
Reply
Old Sep 3, 2008 | 12:05 PM
  #20  
95wht6spd's Avatar
95wht6spd
Thread Starter
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2000
Posts: 7,639
Likes: 326
From: Greenville SC
Default

Yes, both the spring and retainer broke.
Reply



All times are GMT -4. The time now is 10:11 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