Leek / Coolant flush/refill on LT4
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,295
Likes: 14
From: Grand Sport #82
Leek / Coolant flush/refill on LT4
Well, my car (96 LT4), startet too leek coolant from the front, under the radiator, so since I was planning on cleaning out the radiator this winter anyway, I just startet buy pulling out the radiator...
Now I cant see any damage or leek on it. Should I have it testet, or is there a way to do that myself?
Does somenbody have the procedure for refilling/flushing the system once I get the radiator back inn? I understand that it is somewhat different form my old 87....
Now I cant see any damage or leek on it. Should I have it testet, or is there a way to do that myself?
Does somenbody have the procedure for refilling/flushing the system once I get the radiator back inn? I understand that it is somewhat different form my old 87....
Le Mans Master
Joined: Oct 2000
Posts: 6,202
Likes: 9
From: St. louis, MO
You can get a pressure tester that attaches in place of the radiator cap, pump it up to the proper PSI, and look for leaks. There also kits that have a die in them so you can see under the special (ultraviolet, comes with the kit) light. Probably, if the radiator is leaking, its the plastice side tanks. Hard to see them behind the plastic, but often are the source of the leak.
Like this:
http://www.algrovetoolsupply.com/cgi...?item=STN12270
Like this:
http://www.algrovetoolsupply.com/cgi...?item=STN12270
Last edited by Gary04Z06; Oct 28, 2007 at 02:32 PM.
Drifting
Joined: Aug 2004
Posts: 1,710
Likes: 285
Just had the WP replaced on my '96 CE LT4. The leak showed underneath the hood, along the top of the support beam in back of the radiator. The hood splatter was because it was falling on the serpentine belt and getting slung up under the hood.
Trebor
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,295
Likes: 14
From: Grand Sport #82
Anyway, I have the radiator out, and will try and fill it with water...
Le Mans Master
Joined: Aug 2002
Posts: 6,080
Likes: 3
From: Clearwater FL
St. Jude Donor '06
There is a weep hole under the wp you can see if it is wet. Mine also squirted onto the serp belt and had some fluid slung onto the underside of the hood. I also was getting a loss of my power steering as the antifreeze was lubricating the belt and it was slipping causing the ps pump to not spin enough.
Le Mans Master
Joined: Jun 2002
Posts: 6,097
Likes: 2
From: Cincinnati Oh
There is a weep hole under the wp you can see if it is wet. Mine also squirted onto the serp belt and had some fluid slung onto the underside of the hood. I also was getting a loss of my power steering as the antifreeze was lubricating the belt and it was slipping causing the ps pump to not spin enough.
I bet its the WP. Mine did the same thing (still have the stain on the hood). The WPs are commonly known to go early on the LT4s. Mine went at 25k miles.
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Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,295
Likes: 14
From: Grand Sport #82
time for a new radiator for Lars87 it seems
