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Old 12-03-2013, 04:07 PM   #1
Lotec
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Default Heater core question

I have a heater core that is leaking but not into the cabin and the heat still works and no coolant smell in the cabin, the leak is coming from the rubber boot around one of the pipes on the firewall and leaking into the engine bay.

Does anybody know if this is a clog that can be flushed or is it the dreaded core replacement?
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Old 12-03-2013, 04:29 PM   #2
4Driver4
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Just fix it right. Stop leak always causes other issues.
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Old 12-03-2013, 05:14 PM   #3
Lotec
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I don't want to use stop leak, I was asking if this sounds like a clog near the top of the core that can be flushed out, if a core is bad don't they typically leak into the floor of the car and the heat doesn't work?
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Old 12-04-2013, 03:01 AM   #4
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Clogs don't cause leaks; they cause no heat. The plastic supply pipes are probably cracked.
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Growing old is mandatory; growing up is optional.

2005 A6 Sedan Q 3.2 (wife's whip)
2000 A4 Avant Q 2.8 (daily driver)
1980 VW Scirocco (mid-life crisis car)
1983 Mazda RX-7 (revolutionary sports car)
2003 Mini Cooper S (just because)
1995 Mazda Miata, Superdupercharged(anti-Audi)
1999 Mazda Miata SSB (track beotch, no plate)
2003 GMC Yukon Denali XL (the anti-earth)
2004 Dodge Dakota (hey, at least it's stick and 4x4)
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Old 12-04-2013, 03:01 AM
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