Focus Fanatics - View Single Post - Coolant cap slightly hissing and loss of coolant
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Old 01-18-2013, 10:40 AM   #1
Focus Jr. Enthusiast
Join Date: Aug 2011
Fan#: 88684
Location: Hartford, CT
What I Drive: 2000 Ford Focus ZX3

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Coolant cap slightly hissing and loss of coolant

So I checked my coolant the other day after my PVC/air box vent clogging ordeal (topic on here!) since I was pushing out oil I figured I'd check the coolant as well it was a good bit low in the tank added maybe 1/5th of a gallon and its still not where it should be but when hot almost full so its close! Anyways, I noticed a hissing from the cap. Is the cap bad and thus my coolant is evaporating or is the hissing normal for these cars!?

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