TwinTurbo.NET: Nissan 300ZX forum - hmmm
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Subject hmmm
     
Posted by LJZTT on March 14, 2013 at 11:11 AM
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In Reply To Finally resolved a hesitation under heavy load issue. posted by Evan_Wright (Ca) on March 14, 2013 at 09:22 AM
     
Message I have been chasing my tail trying to find the cause of a bad mileage, rich condition that results in mild backfiring off-throttle decel below 2k rpm. Car also feels damn sluggish. This is despite getting dyno-tuned last year.

I havent been able to log AFR's but I have chased all the other usual culprits, sensors are all good/new (but cant vouch for the current OEM O2 sensors), no o-ring leaks, no leaky injectors, no vacuum/boost leaks, fuel/air filter good, compression test came out okay........but no solid leads, I was considering just putting in new O2 sensors and seeing what happens but I admit I have no rationale for doing so, purely stabbing into the dark.

Maybe I should check my plugs too?

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