What Does The Y Stand For On A Spark Plug?

What do NGK Spark Plug numbers mean?

Typically the heat range for NGK Spark Plugs varies from 2-11.

This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is.

This means the spark plug will heat up easily and reach its optimal operating temperature..

What is the difference between NGK bpr5es and bpr6es?

The BPR5ES will run hotter than the BPR6ES. Running a BPR6ES in an engine designed for a BPR5ES may cause premature fouling, and running a BPR5ES in an engine designed for a BPR6ES may cause detonation. … Answer: The difference between the standard BPR5ES and the BPR5ES-11 is the terminal type.

Do I need a hotter or colder spark plug?

For NGK, Denso and Pulstar, the higher the number, the colder the plug. … When making spark plug heat range changes, it is better to err on the side of too cold a plug. Running too cold a plug can only cause it to foul out, whereas running too hot a plug can cause severe engine damage.

What does NGK bpr6es fit?

Plug model NGK #BPR6ES. Fits most Honda models (except V-Twin, GXV340, GXV390, GXH50).

How do I know if my spark plugs need changing?

Here are seven symptoms that let you know it’s time to replace your spark plugs.The car is hard to start. … The engine misfires. … The car gets poor fuel economy. … Rough engine idle. … Your car struggles to accelerate. … The engine is really loud. … Your ‘check engine’ light is on. … Frequency of replacing spark plugs.

Is rc12yc same as qc12yc?

From what I can find the two plugs have the same heat range so are interchangeable without any difference in mechanical engine performance. BUT if you have a fuel injected engine you should use the QC plug. It’s internal electrical construction is different to work properly with fuel injection systems.

What causes a blown spark plug?

A spark plug blow out occurs when the spark plug is fastened too tightly or not tight enough to the engine plug. The result is that the spark plug itself cannot properly channel the electric charge from the plug to the engine block, and the spark plug breaks down.

What does rc12yc mean?

The difference between the RC12Y and the RC12YC is simply the core material. The “C” on the end merely means that it has a copper core.

The gap setting is different for each vehicle but most are somewhere between 0.028″ and . 060″. Consult the owner’s manual or Champion ® catalog to find the recommended setting for the vehicle you’re working on.

Which NGK plug is hotter?

NGK plugs are colder the higher the number, hotter the lower the number. 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). For NGK Racing Plugs, the heat range is located AFTER the hyphen.

What happens if you use the wrong spark plug in a lawn mower?

Spark plugs that are gapped incorrectly can cause an engine to miss, or run erratically, especially during idle. The incorrect spark plug gaps can cause uneven firing of individual spark plugs and delay engine combustion; both of which can cause an engine to miss or idle erratically.