Exhaust Pipe Black Smoke 1.42 Access

), even though unburnt fuel particles are visible as black smoke.

High pressure can force too much fuel through the injectors. EXHAUST PIPE BLACK SMOKE 1.42

If a cylinder fails to fire, raw oxygen and unburnt fuel are dumped into the exhaust. The oxygen sensor reads the excess oxygen as a "lean" condition ( ), even though unburnt fuel particles are visible