No
Go to the next step.
2
Is a rumbling or
grinding noise present?
Yes
Inspect for the followings:
Drive belt tension
P/S fluid level
No
Go to the next step.
3
Is a rattling noise
present?
Yes
Inspect rattling location for
loose parts.
No
Go to the next step.
4
Is a hissing noise
present?
Yes
Inspect for the following:
Vacuum leakage
Spark plug looseness
Intake-air system
leakage
No
Go to the next step.
5
Is a rapping or roar
noise present?
Yes
Inspect looseness for
followings:
Dynamic dumper
Intake-air system
Exhaust system
No
Go to the next step.
6
Is a knocking noise
present?
Yes
Go to symptom
troubleshooting "No.13
Knocking/pinging".
(See
NO.13
KNOCKING/PINGING-
ACCELERATION/CRUISE
[LF]
.)
No
If the noise comes from the
engine internal, inspect for
friction gear, timing chain or
MLA noise.
7
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.
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:10 PM
Page 99
© 2005 Mitchell Repair Information Company, LLC.