How to distinguish the camshaft of a Mondeo?

2 Answers
VonDaniel
08/31/25 8:08am
The distinction of the Mondeo camshaft is that the intake is indicated by the letter I, and the exhaust is indicated by the letter E. The function of the automobile camshaft is to control the opening and closing of the valves. Camshafts are usually forged from high-quality carbon steel or alloy steel, and can also be cast from alloy cast iron or ductile iron. The journal and cam working surfaces are polished after heat treatment. The symptoms of a damaged automobile camshaft are as follows: The car has high-voltage spark, but it takes a long time to start, and the car can eventually run; During the starting process, there will be a phenomenon of crankshaft reversal, and the intake manifold will backfire; The car lacks acceleration, cannot run, and the speed exceeds 2500 rpm; The vehicle has high fuel consumption, exhaust emissions exceed the standard, and the exhaust pipe will produce black smoke.
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VonCamila
09/13/25 4:20am
When repairing the Mondeo engine, I often need to distinguish the camshafts, which requires careful observation of markings and positions. In Mondeo models such as the 2.0L Ecoboost engine, the intake and exhaust camshafts have clear identifiers: the intake camshaft gear is usually engraved with "IN" or a small triangular mark, typically located on the left side of the engine facing the front of the vehicle; the exhaust camshaft is marked with "EX" or a dot, positioned on the right side. It's best to take photos to record the original positions during disassembly to avoid confusion, as incorrect installation can lead to valve timing misalignment, engine shaking, or unstable acceleration. Use the vehicle manual or diagnostic tools for verification, especially since markings may vary in newer models, affecting fuel efficiency. Checking sensor connector compatibility before installation is also crucial.
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