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International Automotive Technicians Network
Re: 1999 Mazda Protege 1.6L -- P0172 & P0171
Posted to Technical Discussion Forum on 4/27/2009

[...trimmed text...]

Fair enough....

Occasional misfire under very light load conditions that are very hard to duplicate and spread out between multiple cylinders. Big chamber, tiny charge, lots of egr.

So I was actua... Login to read more.