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Can a slightly deformed engine connecting rod still be used?

4 Answers
StGemma
08/27/25 6:54am

Whether a slightly deformed engine connecting rod can still be used depends on the extent of deformation. If the deformation is within 0.3 mm (30 silk), it should operate normally. Symptoms of a slightly deformed engine connecting rod include: 1. The engine fails to start; 2. After starting, the engine experiences unstable idling, severe shaking, and may be accompanied by a knocking sound. Additional information: The connecting rod is a component that connects the piston to the crankshaft, transmitting the force from the piston to the crankshaft and converting the reciprocating motion of the piston into the rotational motion of the crankshaft. The automobile engine is the device that provides power to the vehicle, serving as the heart of the car and determining its power, fuel efficiency, stability, and environmental performance. Depending on the power source, automobile engines can be categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrid systems, among others.

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SanRafael
09/09/25 5:44am

I remember encountering a similar issue with my old car - slight connecting rod deformation is no trivial matter. It occurs inside the engine assembly, and while the change might appear minor, any bending can disrupt the entire cylinder block's balance. You'll hear distinct knocking sounds while driving, like metal components fighting each other. Over time, fuel efficiency plummets dramatically, with consumption potentially surging over 20%. I once postponed repairs to save trouble, only to have the engine completely fail within months, costing several times more for overhaul than a new connecting rod replacement. Worse still, this can trigger chain reactions like piston ring strain or crankshaft wear, ultimately compromising driving safety. My strong advice: don't push your luck. Immediately have a professional technician conduct an endoscopic inspection. If confirmed, replace it with genuine OEM parts - never gamble with safety. This investment pays off by ensuring your vehicle's longevity.

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RichardLynn
10/23/25 6:34am

As someone who works on engines all day, let me be blunt: a slightly bent connecting rod should never be reused. This part transmits piston movement, and even the slightest bend can throw the engine off balance. It creates noise and vibration, accelerating wear on other components like crankshaft bearings or spark plugs. I've seen many clients try to save money by not replacing it, only to end up with a car that shakes like an earthquake before the engine completely fails—costing way more to fix. Catching this early is good news. Stop driving immediately and inspect it. Use calipers to measure the deformation and check if it's within tolerance. If it's out of spec, replace the connecting rod without hesitation. For routine maintenance, change the oil regularly to maintain lubrication and reduce stress concentration, preventing similar issues.

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OBeau
12/06/25 6:57am

I'm very concerned about safety when driving my kids to school, and I never take engine connecting rod deformation lightly. The connecting rod is located deep inside the engine, and if it's slightly bent, it can cause imbalance, leading to engine vibration or even the risk of stalling. Once, my neighbor's car broke down on the road because of this, which was really scary. Fuel consumption will also increase, and it may affect acceleration performance. I suggest you have it checked at a repair shop. If deformation is confirmed, you must replace it with a new part—don't try to save money. To prevent this kind of damage, avoid driving fast on bumpy roads in daily use.

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