Combined heat and power (CHP) reciprocating gas engines require gas air and a spark to combust and rotate the engine to a constant speed, Slower acceleration and shaking during acceleration indicate that your engine is misfiring. The engine may also stall or lose power, especially when you have faulty spark plugs.

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To fix the issue, you need to be aware of the most common causes of CHP plant engine misfires:

1) Faulty Spark Plugs

A faulty spark plug reduces the engine’s effectiveness, so inspect the plugs for signs of fouls, dents, or cracks. Replace all faulty plugs with manufacturer-approved components. Fouled spark plugs occur when the extreme temperatures cause the metal to widen the gap between electrodes, affecting the flow of the electrical transmission. In cases of minimal damage, you may be able to clean and re-gap the fouled spark plugs for further use. Prolonged use also leads to wear, with older plugs losing mass and the ability to distribute heat after repeated subjection to high voltages.

2) Worn Ignition Coil

An ignition coil powers the spark plug by converting low voltage charges into higher ones. The coils become faulty due to wear or carbonisation when left unchecked for too long. Misfires happen because it becomes difficult for the coils to release electric charges into the spark plugs.

3) Fault In The Gas and Air Delivery System

A delay may occur in the gas combustion engine when it is in use. The causes of the delay can vary, but the main one is often the failure of the sparks to light the gas and roll the enclosed cylinders. As a result, the engine fails to ignite and burn the gas components. Such a misfire is severe as it can break the industrial machine, reduce performance, and cause complete failure over time.
A misfire is likely to occur when one or more cylinders fail to generate sufficient energy. There are numerous possible causes in such a situation, including faulty spark plugs, an obstructed fuel /air filter, and a faulty oxygen sensor.

4) Faulty High-Tension (HT) Leads

The HT cables transmit an electric charge from the ignition coil to the spark plug. When these cables become worn dirty poorly maintained or defective, the electrical current will find the easiest way to ground, which is called a flash over,  output reduces due to loss of power in the spark plugs, leading to misfires. Contact a qualified engineer to replace worn-out, broken, or poorly installed cables.

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You can prevent all these issues by conducting regular inspections of your engine components, purchasing only genuine parts, and monitoring the machine remotely using an open-access control panel. When you are looking for the best spark plug suppliers in the UK, or you want to fix your plant engine misfires, look no further than R&M Walsh. Contact us today to replace faulty spark plugs or speak to our technical sales team.

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