manuelmeier2
Everest knocking sound and power loss
Summary of the thread
A 2003 Ford Everest with a gasoline engine is experiencing a knocking sound, reduced power, jerking during acceleration, and smoke when accelerating. The issue is suspected to be pre-ignition caused by deposits in the combustion chamber. A professional workshop confirmed the diagnosis and resolved the problem through engine tuning, restoring the vehicle's performance.
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4 comment(s)
manuelmeier2 (community.author)
Thanks! It does seem a bit worse when it's cold. How did you figure out it was pre-ignition? And what did you do about the combustion chamber deposits?
rudolfeis1
Well, the knocking sound was the giveaway for me. It really does sound like pre-ignition, especially with the reduced power and jerking. I'm no mechanic, so I took it to a workshop. They confirmed it was deposits in the combustion chamber causing the issue. They did some engine tuning which seemed to sort it out. Honestly, I think you should take it to a professional.
manuelmeier2 (community.author)
Thanks. I took it to a workshop as you suggested. They confirmed it was deposits in the combustion chamber, and the engine tuning cleared it up. Cost me 425€, but at least it's running smoothly again. I appreciate the help!
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FORD
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EVEREST
rudolfeis1
Sounds familiar. I had something similar happen with my Everest. Is it worse when the engine is cold? I'm wondering if it could be pre-ignition. Have you checked your ignition timing or looked for deposits in the combustion chamber?