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Re: FUEL TRIM LEAN DIAGNOSIS
Posted to Technical Theory Forum on 4/2/2025 2 Replies

Most lean codes I run into wind up being vacuum leaks. As you mention the trim numbers going neutral on Accel, it makes my mind go to vacuum leak.

Smoke tester, stethoscope (with open end) or brakleen can are tools I use to find vacuum leaks.

Just so few i... Login to read more.

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