Smoke Diagnosis Charts

DIAGNOSIS AND TESTING-SMOKE DIAGNOSIS CHARTS
The following charts include possible causes and corrections for excess or abnormal exhaust smoke.
Small amounts of exhaust smoke (at certain times) are to be considered normal for a diesel powered engine.

Excessive Black Smoke





Part 1 of 2





Part 2 of 2

Excessive White Smoke





Part 1 of 3





Part 2 of 3





Part 3 of 4

Excessive Blue Smoke