LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Coolant flush woes...

Thread Tools
 
Search this Thread
 
Old Sep 16, 2010 | 01:59 AM
  #1  
myk's Avatar
myk
Thread Starter
TECH Fanatic
15 Year Member
Liked
Loved
iTrader: (4)
 
Joined: May 2007
Posts: 1,882
Likes: 13
From: Sun Diego
Default Coolant flush woes...

Hey all. I just finished flushing out the coolant in my '97Z and I started filling it up with coolant. However, when I start it up I get this loud, random noise, like a scratching, scraping, or something. I "think" it's coming from the front-center of the engine which leads me to believe it's the water pump. I accidentally left one of the bleeder valves open too far and ended up getting coolant everywhere. Could coolant on the pulleys/belts cause noise also?

Now, I've heard all sorts of stories about water pumps going out right after a flush, but if this is the case what causes that to happen? I'm seriously hoping that it isn't the pump, so if there are any other items that could've gone wrong here I'd like to hear some ideas; it's not leaking by the way.

Another question on the topic of flushing: I understand you're supposed to keep topping the radiator off as trapped air leaves the system, but how do I top it off when the radiator keeps spitting out coolant while it runs? As it is I've barely got a gallon of coolant in the radiator because it keeps spitting out coolant while it's running.

Thanks in advance, guys...
Reply
Old Sep 16, 2010 | 02:10 AM
  #2  
hitmanws6's Avatar
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

is it overheating? yes coolant on the belts could cause some noise. the usual tell take sign of a waterpump failure if coolant coming from the weephole. and top it off with a perfect funnel (i believe thats what they are called). it screws onto your radiator and you fill it with coolant and it takes whatever coolant it needs from there
Reply
Old Sep 16, 2010 | 02:25 AM
  #3  
myk's Avatar
myk
Thread Starter
TECH Fanatic
15 Year Member
Liked
Loved
iTrader: (4)
 
Joined: May 2007
Posts: 1,882
Likes: 13
From: Sun Diego
Default

I don't think the car got a chance to overheat because the noises and the barfing of coolant all over the place was pissing me off, so I kept shutting it down.

I've heard of that perfect funnel thing too, but I've read so many threads about people doing flushes and I don't recall anyone having a problem like I do, where the radiator keeps throwing coolant out. I just figured I was doing something wrong...
Reply




All times are GMT -5. The time now is 02:49 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE