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Increase Knock After Changing Spark Plugs

SAMFISHER

By SAMFISHER,
in General Maintenance

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SAMFISHER Enthusiast

SAMFISHER

Posted
Posted

I've changed my spark plugs from NGK PFR5A - 11 (as recommended for standard R33 25t)

to BCPR6ES.

Now I'm getting knock in the 20's pulling away from the lights (after changing up from 1st), at only 2k revs or so. Previously only had knock in the low single digits when pottering around.

From the research I've done the specs of the plugs should be fine (as recommended by none other than SK)

I've had a look but is there something I may not have connected up properly after the change?

I didn't check the gaps but then most rely on the gaps to be OK from the factory?

Any suggestions greatly appreciated

SAMFISHER Enthusiast

SAMFISHER

Posted
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Posted
the knock may just be the sensors picking up the ignition noise.

If so, why wouldn't the igntion noise have been picked up previously?

The old sparkplugs looked fine when I took them out, new sparkplugs were required

because I'm going to be pushing 210 rwkw's + on the next tune.

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