Question: How do you read a NGK Spark Plug code?

Where is the part number on a spark plug?

The simplest way find out exactly which plug goes with a particular engine is to inspect the spark plug already in it. There is a porcelain housing around the center of the plug. You should find the part number printed on this porcelain area.

How do I know the heat range of my NGK Spark Plug?

NGK indicates the heat range in the middle of the plug number. For example, BCPR6ES-11 has a heat range of 6. (The number after the “-“ is the gap.) Starting with part # BKR6E-11 (heat range 6), a colder plug would # BKR7E-11 (heat range 7), a hotter plug would be # BKR5E-11 (heat range 5).

What does the Z mean in NGK spark plugs?

“Z” indicates a 10 mm x 1.0 with a 1/2″ reach. “G” indicates a 10 mm x 1.0 with a 3/4″ reach. The number (82 in this case) indicates the heat range of the spark plug, the higher the number the hotter the heat range (opposite of NGK and ND spark plugs).

What does R mean in NGK spark plugs?

[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. [V] Shell Design – This refers to the thread size and reach of the spark plug.

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Do NGK plugs need to be gapped?

While most NGK spark plugs are pre-gapped, there are occasions when the gap requires adjustment. Care must be taken to avoid bending or breaking off the fine-wire electrodes. … NGK also recommends adjusting the gap no more than +/- 0.008” from the factory preset gap.

What does NGK bkr5egp fit?

This NGK G-Power Platinum Spark Plug (Part # 7090) is an exact fit for your 1996 Toyota 4Runner SR5. All the spark plugs are pre-gapped from the factory, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for.

What number is a hotter spark plug?

The higher the number, the hotter the plug. The lower the number, the colder the plug. Starting with part # 24 (heat range 4), if you want a colder plug you would use part # 23 (heat range 3), for a hotter plug you would use part # 25 (heat range 5).

What happens if spark plug is too hot?

The most serious result of selecting a heat range that is too hot is overheating. Overheating will cause the electrodes to wear quickly and can lead to pre-ignition. … When the spark plug firing end (tip) temperature exceeds 800°C, pre-ignition originating from the overheated insulator ceramic can occur.

What happens if you use a hotter spark plug?

A “hot” spark plug has a longer insulator that prevents heat transfer into the water jackets. It keeps more heat in the tip of the spark plug, which helps burn off combustion chamber deposits. But if there’s too much retained heat, the engine will experience preignition.

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