Out of interest....what's the state of the C191 plug connections and wiring ?
The round plug under the intake manifold. That plug feeds spark to the injectors, corroded wiring in C191 isn't unusual and can result in poor running if rot is causing high injector circuit resistance.
Might be the cause of your slightly lean condition.
The round plug under the intake manifold. That plug feeds spark to the injectors, corroded wiring in C191 isn't unusual and can result in poor running if rot is causing high injector circuit resistance.
Might be the cause of your slightly lean condition.
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