Re: heater core tricks
[Re: Dakota_Don]
#1359456
12/26/12 06:17 PM
12/26/12 06:17 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I've pulled the hoses off of the nipples & back flushed it with a garden hose nozzle modulating the pressure somewhat with my other hand which helped with a slightly to moderately clogged one. No opinion on a good chemical to use but it'd have to be caustic to do any good. Cooling system deposits are tough. Doug Dutra the /6 guru used a solution of Muriatic acid (swimming pool cleaner) in a bare block & said the insides came out like fresh bare metal. Dont remember what percentage of acid/water he used nor how long he let it sit tho used in a core that might affect its' soldered joints
live every 24 hour block of time like it's your last day on earth
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Re: heater core tricks
[Re: RodStRace]
#1359462
12/28/12 01:12 AM
12/28/12 01:12 AM
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Joined: Oct 2005
Posts: 6,048 Back home in PA
BulletBob
master
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master
Joined: Oct 2005
Posts: 6,048
Back home in PA
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Quote:
Always back-flushed, but more often than not, any plugged core that is unplugged tends to leak! You could try an old speedo cable (just the inside part) to 'snake' out the clogs...
Trash in a cooling system works like stop leak It finds the leak only being larger & more rigid the stop leak it gathers the rest of the trash & essentially becomes like a clogged filter so to speak
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Re: heater core tricks
[Re: BulletBob]
#1359463
12/28/12 01:21 AM
12/28/12 01:21 AM
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Joined: Jan 2003
Posts: 8,938 Holly/MI
Dean_Kuzluzski
master
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master
Joined: Jan 2003
Posts: 8,938
Holly/MI
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I've used air pressure from my shop compressor to blow out a plugged heater core. Just ease into it with a nozzle and once opened put it back together. If it leaks, add a little Bars Leak, pepper or whatever trick of choice.
R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04
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Re: heater core tricks
[Re: manymopars]
#1359465
12/28/12 07:51 AM
12/28/12 07:51 AM
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Joined: Jan 2003
Posts: 21,067 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,067
Niles , Ohio
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We backflushed a bunch of GM heater cores for no heat.The Dexcool clogged them up.Some you had to do a few times to get good heat.Never had any leaks.I had a 73 Dart that had a plugged core.Flushed it probally 10 times.Still never had good heat.Replaced the core and it roasted you out.Typically though they will be good after a good flush.That and almost never have they leaked.Rocky
Chrysler Firepower
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Re: heater core tricks
[Re: therocks]
#1359466
12/28/12 12:42 PM
12/28/12 12:42 PM
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Joined: Jan 2003
Posts: 8,938 Holly/MI
Dean_Kuzluzski
master
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master
Joined: Jan 2003
Posts: 8,938
Holly/MI
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Anyone ever try putting some Airsoft BB's into the heater hoses to help clean out the heater core???
This assuming you have both the inlet and outlet hoses detached and can recapture the BB's when they come out.
R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04
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Re: uncloging heater core tricks
[Re: Dakota_Don]
#1359467
12/28/12 05:25 PM
12/28/12 05:25 PM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
enthusiast
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enthusiast
Joined: Jan 2008
Posts: 299
East Brunswick, NJ
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I have had good luck using CLR. Flush with water, Avoid high pressure air you can easily blow out a weak core. Pour the CLR in through the heater hoses, let it sit, flush with water again. I would flush it into a white bucket and stop once the sediment stops coming out.
Good Luck
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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Re: heater core tricks
[Re: hp383]
#1359469
12/29/12 12:15 AM
12/29/12 12:15 AM
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Joined: Jan 2003
Posts: 18,414 UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,414
UPPER MICHIGAN, MARQUETTE COUN...
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Quote:
Quote:
Anyone ever try putting some Airsoft BB's into the heater hoses to help clean out the heater core???
This assuming you have both the inlet and outlet hoses detached and can recapture the BB's when they come out.
I dont think the passages on the core would pass the BB's
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