Exhaust Smoke - Mazda MX-5 Miata Sport 2007 Manual

2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
5
NO.19 EXHAUST SMOKE [LF]
POSSIBLE CAUSE & DESCRIPTION (EXHAUST SMOKE)
DESCRIPTION
2007 Mazda MX-5 Miata Sport
Verify test results.

If normal, return to diagnostic index to service any additional

symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING [LF] .)
If malfunction remains, inspect related Service Bulletins and/or On-

line Repair Information and perform repair or diagnosis.
If vehicle is repaired, troubleshooting completed.

If vehicle is not repaired or additional diagnostic information

is not available, replace PCM.
(See PCM REMOVAL/INSTALLATION [LF] .)
19
No

EXHAUST SMOKE

Blue, black, or white smoke from exhaust system
Blue smoke (Burning oil):
PCV valve malfunction

Engine internal oil leakage

White smoke (Water in combustion):
Cooling system malfunction (coolant loss)

instrument cluster
indicates normal range
but ECT PID is not the
same as temperature
gauge reading, inspect
the ECT sensor.
If the temperature
gauge on the
instrument cluster
indicates cold range but
ECT PID is normal,
inspect the temperature
gauge and heat gauge
unit.
Repair or replace the
malfunctioning part.