HI folks... What NGK spark plug should be used in a B21 engine with K-Jet Fuel Injection... WSBP6ES or WSBPR6ES?
Allan
B21 engine - which NGK spark plug?
Sep 09, 2003
3 Replies
Anyone know which NGK spark plug should be used?
Car has K-Jet injection and a B21 engine.
WSBP6ES or WSBPR6ES?
Allan
Either should be fine. Apparently the resistor plugs make more of a difference for the EFI cars. BPR6ES is a resistor plug, BP6ES is not.
- alex
I've often wondered what the difference is; is it that the "R" plug causes less electrical noise in the engine bay or what? All I know for sure is that they are the same heat rating and the "R" one is more expensive. If anyone knows the answer, I would be glad to know myself.
Stuart
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