Mazda MX-5 Miata Sport 2007 Manual page 1994

2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
BUCK/JERK, HESITATION/STUMBLE, SURGES [LF]
POSSIBLE CAUSE & DESCRIPTION (ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES,
BUCK/JERK, HESITATION/STUMBLE, SURGES)
DESCRIPTION
2007 Mazda MX-5 Miata Sport
11
ENGINE STALLS/QUITS-
ACCELERATION/CRUISE
ENGINE RUNS ROUGH-
ACCELERATION/CRUISE
MISSES-ACCELERATION/CRUISE
BUCK/JERK-
ACCELERATION/CRUISE/DECELERATION
HESITATION/STUMBLE-ACCELERATION
SURGES-ACCELERATION/CRUISE
Engine stops unexpectedly at the beginning of

acceleration or during acceleration.
Engine stops unexpectedly while cruising.

Engine speed fluctuates during acceleration or

cruising.
Engine misses during acceleration or cruising.

Vehicle bucks/jerks during acceleration,

cruising, or deceleration.
Momentary pause at beginning of acceleration

or during acceleration
Momentary minor irregularity in engine output

Improper A/C system operation

Erratic signal or no signal from CMP sensor

Air leakage from intake-air system parts

Purge solenoid valve malfunction

Improper operation of electronic throttle

control system
EGR valve malfunction

Erratic signal from CKP sensor

Low engine compression

Vacuum leakage

Poor fuel quality

Main relay intermittent malfunction

Throttle body malfunction

Engine overheating

Spark plug malfunction

Improper air/fuel mixture ratio control
