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

Knock/Clunk when starting ????

Old May 20, 2002 | 12:45 PM
  #1  
vvv90's Avatar
vvv90
Thread Starter
Race Director
20 Year Member
 
Joined: Feb 2002
Posts: 11,268
Likes: 14
From: Honolulu, HI
Default Knock/Clunk when starting ????

I've had this situation for a while, but I've been in denial. It might be serious, but I'm not sure.

About 9 out of 10 times when I start the car (cold or hot) I hear a loud single clunk when I engage the starter. It's pretty loud, but it's only one clunk and the car starts up Immediately every time. It doesn't make any noise like this while driving, but I do hear clunking noises when I shift gears, which I don't think is related because I've been told the ZF6 is a noisey trans. The shifting noises aren't as loud as the start-clunk.

Bad U-joint came to mind about the clunking while shifting, is that a possibility? If it is a bad U I know that the start-clunk isn't related to that then. :confused: :confused:
Reply
Old May 20, 2002 | 06:31 PM
  #2  
bogus's Avatar
bogus
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Default Re: Knock/Clunk when starting ???? (vvv90)

sounds like the bendix is crashing in...

the bendix is the part of the starter that swings up to the flywheel to start the car.

get a new starter.

as for the shifting clunks... make sure the bolts on the Cbeam are nice and tight.
Reply
Old May 20, 2002 | 06:34 PM
  #3  
Sharky Guam's Avatar
Sharky Guam
Safety Car
 
Joined: Feb 2002
Posts: 4,286
Likes: 4
From: Guam
Default Re: Knock/Clunk when starting ???? (bogus)

I replaced a starter this week that had the same problem. The bolts that hold the starter housing together came loose and was causing the starter housing pieces to flex and move. The result was that it cracked the nose portion of the starter housing as a result of the flexing.
Reply
Old May 20, 2002 | 06:43 PM
  #4  
vvv90's Avatar
vvv90
Thread Starter
Race Director
20 Year Member
 
Joined: Feb 2002
Posts: 11,268
Likes: 14
From: Honolulu, HI
Default Re: Knock/Clunk when starting ???? (bogus)

How hard is it to do this? Any posts on the process would be appreciated.

:sad:
Reply

Get notified of new replies

To Knock/Clunk when starting ????



Thread Tools
Search this Thread

All times are GMT -4. The time now is 03:25 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