DIAGNOSTIC PROCEDURE
ENGINE RUNS ROUGH/ROLLING IDLE DIAGNOSTIC PROCEDURE TABLE
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 sure
that it is free of foreign material.
STEP
INSPECTION
RESULTS
ACTION
1
Warm up the engine.
Idle the engine for
5
min.
Is the symptom
disappeared?
Yes
Troubleshooting completed.
(Cause of this symptom is that
the idle learning of electronic
throttle control system is not
completed.)
No
Go to the next step.
2
Verify the following:
External fuel shut
off or accessory
(such as kill
switch, alarm)
Fuel quality (such
as proper octane,
contamination,
winter/summer
blend)
No air leakage
from intake-air
system
Proper sealing of
Yes
Go to the next step.
No
Service if necessary.
Repeat Step 2.
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:09 PM
Page 49
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