Carbon buildup on intake valves

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Carbon buildup on intake valves

Postby PapaJohn » Sat Dec 01, 2018 5:07 pm

So, it looks like the 2013 NC Miatas have direct injection. At what point do these motors need to have the carbon buildup on the intake valves be removed?
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Re: Carbon buildup on intake valves

Postby DanielS172 » Sun Dec 02, 2018 7:54 pm

Can't say for other versions, but I'm pretty sure the NC variant of the MZR engine does not have direct injection.
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Re: Carbon buildup on intake valves

Postby PapaJohn » Mon Dec 03, 2018 9:28 am

You are correct Daniel. The 2013 MZR engine is port injection, the fuel spray is at the back side of the intake valve. Good to know.
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