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Mazda2 Owners Manual
Mazda Service Manual

Mazda 6 Service Manual: Troubleshooting

Mazda 6 Service Manual / Fuel and emission control systems / Troubleshooting

Engine symptom troubleshooting
Quick diagnostic chart
No.1 melting of main or other fuses
No.2 mil illuminates
No.3 will not crank
No.4 hard to start/long crank/erratic start/erratic crank
No.5 engine stalls-after start/at idle
No.6 cranks normally but will not start
No.7 slow return to idle
No.8 engine runs rough/rolling idle
No.9 fast idle/runs on
No.10 low idle/stalls during deceleration
No.11 engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
No.12 lack/loss of power-acceleration/cruise
No.13 knocking/pinging-acceleration/cruise
No.14 poor fuel economy
No.15 emission compliance
No.16 high oil consumption/leakage
No.17 cooling system concerns-overheating
No.18 cooling system concerns-runs cold
No.19 exhaust smoke
No.20 fuel odor (in engine compartment)
No.21 engine noise
No.22 vibration concerns (engine)
No.23 a/c does not work sufficiently
No.24 a/c is always on or a/c compressor runs continuously
No.25 a/c is not cut off under wide open throttle conditions
No.26 exhaust sulphur smell
No.27 constant voltage
No.28 spark plug condition
Intermittent concern troubleshooting
Engine control system operation inspection

Dtc p2504

Diagnostic procedure ...

Engine symptom troubleshooting

Confirm trouble symptom using the following diagnostic index, then go to appropriate troubleshooting chart. Diagnostic Index ...

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