NO.6 CRANKS NORMALLY BUT WILL NOT START [LF]
POSSIBLE CAUSE & DESCRIPTION (CRANKS NORMALLY BUT WILL NOT START [LF])
Plug opening end of
vacuum hose.
Start the engine.
Is the engine stall now
eliminated?
No
Go to the next step.
24
Is air leakage felt or
heard at intake-air
system components
while racing the engine
to higher speed?
Yes
Repair or replace the
malfunctioning part.
No
Go to the next step.
25
Inspect the engine
condition while tapping
EGR valve housing.
Does the engine
condition improve?
Yes
Replace the EGR valve.
No
Go to the next step.
26
Inspect variable valve
timing control system
operation.
(See
VARIABLE
VALVE TIMING
CONTROL SYSTEM
OPERATION
INSPECTION
.)
Does variable valve
timing control function
properly?
Yes
Go to the next step.
No
Repair or replace the
malfunctioning parts according
to variable valve timing control
system operation inspection
results.
27
Is the engine
compression correct?
Yes
Inspect the valve timing.
No
Inspect for cause.
28
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.
If vehicle is not repaired or additional diagnostic information
is not available, replace the PCM.
(See
PCM REMOVAL/INSTALLATION [LF]
.)
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:09 PM
Page 35
© 2005 Mitchell Repair Information Company, LLC.