CAS 0-ring, leaked in heater hose. - Miata Turbo Forum - Boost cars, acquire cats.

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Old 12-30-2015, 02:56 AM   #1
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Default CAS 0-ring, leaked in heater hose.

So my CAS o-ring has been leaking an I just replaced it. While I was back there I saw several hoses with oil on them. I assume there not long for the world. So my question is, are these hoses specific to the miata or can I just replace them flexible coolant hoses?

It's a 1990 1.6 miata with 167k
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Old 12-30-2015, 07:30 AM   #2
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The hoses are much easier to replace with the OEM hoses. You can order them on line from many Mazda parts places
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Old 12-30-2015, 03:51 PM   #3
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If you try to replicate the OEM hoses with generic straight hose, the bends will be all kinked and restrict flow. The OEM ones are not that expensive, maybe $10 each or less.
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Old 12-31-2015, 03:15 AM   #4
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So today's update. When I replaced the CAS o-ring I also replaced the valve cover gasket. Well today I noticed its leaking oil onto the coil pack. So I don't know if this is related but the car has been surging lately kinda chugging along at times almost like a slipping clutch. Could it be the oil on the coil pack doing this?

I did put sealant on all the six spots but not on the flat part near the coil pack. I'm probably going to grab a new valve cover gasket tmrw after work.
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