Filter
Top Products
Diesel Engine Troubleshooting Symptoms
30
Excessive Exhaust (Black Smoke)
This is symptom tree T-009.
Cause Correction
Engine is bring lugged down
Use lower gear.
OK
Clogged air cleaner element
Clean or replace the air cleaner element.
OK
Muffler is crushed or clogged
Replace the muffler. Refer to the OEM’s
service manual.
OK
Air leakage between the turbocharger and
head
Tighten the clamp between turbocharger and
head. Repair leaks between turbocharger and
head.
OK
Exhaust leak between turbocharger and
Exhaust manifold
Inspect and change gaskets.
OK
Turbocharger does not rotate freely
Replace the turbocharger.
OK
Defective or clogged injection nozzle
Adjust or replace the injection pump.
OK
Worn piston ring or cylinder (blue smoke)
Replace the worn piston ring or cylinder.
OK
Incorrect injection timing
Adjust injection timing.
OK
Overhead adjustments are not correct
Measure and adjust the overhead settings.