POSSIBLE CAUSE
Engine internal coolant leakage
Black smoke (Rich fuel mixture):
Air cleaner restriction
Intake-air system is collapsed or restricted.
Fuel return line is restricted.
Excessive fuel pressure
Improper engine compression
Injector fuel leakage
Ignition system malfunction
WARNING:
The following DIAGNOSTIC PROCEDURE
TABLE contains fuel system diagnosis and
repair procedures. Read following
warnings before servicing fuel system:
Fuel vapor is hazardous. It can easily
ignite, causing serious injury and
damage. Always keep sparks and
flames away from fuel.
Fuel line spills and leakage are
dangerous. Fuel can ignite and cause
serious injuries or death and
damage. Fuel can also irritate skin
and eyes. To prevent this, always
complete "BEFORE SERVICE
PRECAUTION" and "AFTER SERVICE
PRECAUTION" described in this
article.
(See BEFORE SERVICE
PRECAUTION [LF] .)
(See AFTER SERVICE PRECAUTION
[LF] .)
CAUTION:
Disconnecting/connecting quick
release connector without cleaning it
may cause damage to fuel pipe and
quick release connector. Always
clean quick release connector joint
area before
disconnecting/connecting, and make
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:10 PM
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