Are all above items
normal?
No
Replace the fuel injector.
9
Is the air cleaner
element free of
clogging?
Yes
Go to the next step.
No
Replace the air cleaner element.
10
Perform the spark test.
(See
SPARK TEST
.)
Is strong blue spark
visible at each cylinder?
Yes
Go to the next step.
No
Repair or replace the
malfunctioning part.
11
Install the fuel pressure
gauge between the fuel
filter and fuel
distributor.
Short check connector
terminal F/P to body
GND using a jumper
wiring.
Turn the ignition switch
to the ON position
(Engine off).
Is the fuel line pressure
correct with ignition
switch at ON?
(See
FUEL LINE
PRESSURE
INSPECTION [LF]
.)
Yes
Go to the next step.
No
Zero or low:
Inspect the fuel pump relay and
fuel pump circuit.
Inspect the fuel line for
clogging.
If there is no malfunction,
replace the fuel pump unit.
(See
FUEL PUMP UNIT
REMOVAL/INSTALLATION
[LF]
.)
High:
Replace the fuel pump unit.
(See
FUEL PUMP UNIT
REMOVAL/INSTALLATION
[LF]
.)
12
Inspect the following
PIDs:
ECT
O2S11 (When
engine can be
started.)
O2S12 (When
engine can be
started.)
MAF
(See
PCM
INSPECTION [LF]
.)
Are PIDs normal?
Yes
Go to the next step.
No
Repair or replace the
malfunctioning part.
13
Perform the purge
control inspection.
(When engine can be
Yes
Go to the next step.
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:11 PM
Page 117
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