Mazda MX-5 Miata Sport 2007, Manual

Page: 1995 / 2244

POSSIBLE CAUSE
operation

Erratic signal to ignition coil

Air cleaner restriction

PCV valve malfunction

Fuel flow into evaporative purge hose

Improper valve timing due to jumping out
timing belt

Restriction in exhaust system

Intermittent open or short circuit in fuel body
pump circuit

Inadequate fuel pressure

Fuel pump mechanical malfunction

Check valve (two-way) malfunction integrated
with fuel tank

Fuel leakage from fuel injector

Fuel injector clogging

Fuel line restriction or clogging

Pressure regulator malfunction (built-in fuel
pump unit)

Erratic signal form Accelerator pedal position
sensor

Erratic signal form TP sensor

Intermittent open or short circuit of MAF
sensor, TP sensor, Accelerator pedal position
sensor and VSS

AT malfunction (AT)

Clutch slippage (MT)

Improper variable intake air control operation

Loose attaching bolts or worn engine mounts
WARNING:
The following DIAGNOSTIC PROCEDURE TABLE
contains the fuel system diagnosis and repair
procedures. Read the following warnings before
servicing the fuel system:

Fuel vapor is hazardous. It can easily ignite,
causing serious injury and damage. Always
keep sparks and flames away from fuel.

Fuel line spills and leakage are dangerous.
Fuel can ignite and cause serious injuries or
death and damage. Fuel can also irritate
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:10 PM Page 62 © 2005 Mitchell Repair Information Company, LLC.