melissamond1
Ford Ka Hissing Noise and Fuel Consumption
Summary of the thread
A 2004 Ford Ka is experiencing increased fuel consumption, a check engine light, and a loud hissing noise from the engine bay during acceleration. The suspected cause is an air intake leak, possibly in the intake hose. A similar issue was resolved by checking and replacing a split vacuum hose near the throttle body connection, which is a common problem and can be identified by listening for changes in the hissing sound when the hose is manipulated. If unsure, consulting a professional is recommended for a proper fix.
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4 comment(s)
melissamond1 (community.author)
Thanks! The vacuum hoses were my first thought. Where was the split? Was it easy to see, or did you have to really look?
paula_hartmann8
It was on the underside of the hose, near the throttle body connection. I only found it by wiggling the hose while the engine was running – the hissing got louder. If you aren't comfortable doing it yourself, take it to a workshop. It's probably a simple fix, but messing with the intake can cause problems if you're not careful.
melissamond1 (community.author)
Thanks for the advice! I'll check the hose more closely. If I can't fix it, I'll go to a technician. I replaced the hose in the workshop, and the repair cost me 100€.
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FORD
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KA
paula_hartmann8
I had the same symptoms on my Ka. Check the vacuum hoses, especially the one from the air filter to the intake manifold. Mine had a split, causing the hissing and the engine light. Check that first, it's a common problem.