General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

Heater core Flush

Thread Tools
 
Search this Thread
 
Old Feb 23, 2008 | 04:01 PM
  #1  
LT4hotcam's Avatar
Thread Starter
On The Tree
 
Joined: Mar 2007
Posts: 142
Likes: 0
From: Hereford, TX
Default Heater core Flush

How do u flush the heater core, i bought some radiator flush from autozone.
Reply
Old Feb 23, 2008 | 04:56 PM
  #2  
chavez885's Avatar
TECH Addict
iTrader: (12)
 
Joined: Dec 2005
Posts: 2,382
Likes: 1
From: Concord, CA
Default

Did you take out the heater core or are you trying to flush it with the core still in the car?
Reply
Old Feb 23, 2008 | 06:20 PM
  #3  
Dskeet6's Avatar
12 Second Club
iTrader: (20)
 
Joined: Sep 2007
Posts: 476
Likes: 0
From: Drexel Hill
Default

if you think its really clogged.... hook a hose up to your hot water heater in your house... disconnect the coolant hoses that go through the firewall to the core and just squirt the hot water in there. Water pressure from your house is good enough to blow anything out
Reply
Old Feb 23, 2008 | 06:45 PM
  #4  
LT4hotcam's Avatar
Thread Starter
On The Tree
 
Joined: Mar 2007
Posts: 142
Likes: 0
From: Hereford, TX
Default

Originally Posted by chavez885
Did you take out the heater core or are you trying to flush it with the core still in the car?
I was trying to flush while it was still in the car.
Reply
Old Feb 23, 2008 | 07:59 PM
  #5  
BlackDuk98's Avatar
TECH Resident
iTrader: (34)
 
Joined: Jul 2006
Posts: 885
Likes: 2
From: Cleveland Ohio
Default

Do what Dskeet6 said. pull both hoses off the heater core and get a garden hose and stick it on 1 of the heater core tubes and turn the water on. You may need to put a hose on the other one to divert the water away from your car when it comes out. Then run water through the other side and do the same. Usually you will get a bunch of crap from them. May need to do this a few times for best results.

-no need to remove it from the car.
Reply




All times are GMT -5. The time now is 07:14 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE