system.Is cruise control
system normal?
14
Inspect the front HO2S.
(See
FRONT
HEATED OXYGEN
SENSOR (HO2S)
INSPECTION [LF]
.)
Is the front HO2S
normal?
Yes
Go to the next step.
No
Replace the front HO2S.
(See
FRONT HEATED
OXYGEN SENSOR (HO2S)
REMOVAL/INSTALLATION
[LF]
.)
15
Inspect the evaporative
purge hose between the
fuel tank and the purge
valve.
Does fuel flow into
evaporative purge hose?
Yes
Inspect the check valve (two-
way).
(See
FUEL TANK
INSPECTION [LF]
.)
No
Go to the next step.
16
Disconnect the vacuum
hose between the purge
solenoid valve and the
intake manifold from
the purge solenoid
valve side.
Plug opening end of
vacuum hose.
Drive the vehicle.
Does the engine
condition improve?
Yes
Go to the next step.
Inspect if the purge solenoid
valve is stuck open
mechanically.
Inspect the evaporative emission
control system.
No
Go to the next step.
17
Visually inspect the
CMP sensor and
projections of camshaft
pulley.
Are CMP sensor and
projections of camshaft
pulley normal?
Yes
Go to the next step.
No
Replace the malfunctioning part.
18
Inspect the EGR
system.
(See
EGR CONTROL
SYSTEM
INSPECTION
.)
Is the EGR system
normal?
Yes
Go to the next step.
No
Replace the malfunctioning part.
19
Is the engine
compression correct?
Yes
Inspect the following:
Valve timing
Internal transaxle part
(AT)
Clutch (MT)
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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