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Autolite engineers have developed plugs in many heat ranges to suit all engine applications. They range from COLD through MEDIUM; and HOT to EXTREMELY HOT. Rules for selecting the correct plug are to follow manufacturer’s specifications. COLD MEDIUM HOT
May 11, 2018 · Let’s first define what is a hot versus a cold plug. Looking at a spark plug center ceramic insulator, if the area between the ceramic and the spark plug outer steel shell is deep, that is a hotter heat range plug. Conversely, if the ceramic contacts the shell very close to the open end of the shell, this would be a much colder spark plug.
Jun 18, 2021 · NGK spark model like BPMR7R defines a very significant meaning which is worth knowing when you are thinking about replacing the stock spark plug of your engine. NGK brings spark plugs for numerous vehicles, including ATV, four-wheeler, motorbike, and the like.
We break down how to decode the part number and stock number on your NGK spark plugs.
- Difficulty in Starting the Vehicle. Since a strong spark is needed to ignite the air-fuel mixture in the combustion chamber, any hindrance to this, like a wet spark plug, can lead to issues with starting the vehicle.
- Engine Misfires. Engine misfires are another notable symptom of wet spark plugs. When the spark plugs are wet, the electric spark fails to travel across the gap between the electrodes efficiently.
- Poor Fuel Efficiency. Fuel efficiency is a crucial aspect of vehicle performance. Wet spark plugs can disrupt the normal combustion process due to inconsistency or lack of spark.
- Loss of Engine Power. Spark plugs play a significant role in the overall power output of a vehicle. Wet spark plugs can disrupt the ignition process, resulting in less effective combustion and a subsequent reduction in engine power.
Whether you’re searching for how to read spark plugs for tuning, how to read spark plugs for rich or lean conditions, or for any purpose, read to the end, when reading spark plugs, you have to locate the spark plugs and remove the ignition lead cables or the ignition coils.
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Let’s take a closer look: [R] Resistor - If an R is present, this indicates a resistor type spark plug. Resistor type spark plugs reduce the amount of radio frequency interference (RFI) that can cause ignition misfires and static on the radio.
