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19/08/2025 1:18 pm
Topic starter
Mazda CX5 2016 GDI 2.5L non turbo, around 60 000 miles
Do i have to worry about carbon build up in intake valves?
Car is running perfectly right now.
Do i need to use spray valve cleaner in intake manifold as a routine maintenance or it' s wasting money?
1 Answer
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19/08/2025 2:56 pm
use a borescope to find out how bad it is. Then, if needed, take it for proper GDI cleaning service. The stuff in a can won't do anything.
