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sprinkles08, ASE Certified Technician
Category: Mazda
Satisfied Customers: 23128
Experience:  ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
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I have a miata 1999 1.8 it makes a knox sound when you put

Customer Question

I have a miata 1999 1.8 it makes a knox sound when you put number 3 plug wire on
Submitted: 9 months ago.
Category: Mazda
Expert:  sprinkles08 replied 9 months ago.

Hello and welcome to JustAnswer!

A knock that lessens or goes away when the cylinder stops producing power is caused by a bottom end issue, either a rod bearing, wristpin, or possibly an issue with the piston itself.

Is the engine running normally otherwise?