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Mercury/Mariner 3.0 MPI ECT User Manual

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Section 7 - Troubleshooting
90-8M0074347 eng OCTOBER 2012 Page 109
Section 7 - Troubleshooting
Table of Contents
Troubleshooting Information and Charts Specifically for 3.0
MPI ECT............................................................................. 110
Diagnosing EFI Problems............................................ 110
Engine Guardian System............................................. 110
Starter Motor Will Not Crank Engine, or Cranks Slowly
..................................................................................... 110
Engine Will Not Start or Is Hard to Start...................... 110
Engine Runs Rough, Misses, or Backfires.................. 111
Poor Performance........................................................111
Troubleshooting Charts Specifically for 3.0 TKS................ 111
Starter Motor Will Not Crank Engine, or Cranks Slow. 111
Engine Will Not Start or Is Hard to Start...................... 111
Engine Runs Rough, Misses, or Backfires.................. 112
Poor Performance........................................................112
Troubleshooting Charts for 3.0 MPI ECT and 3.0 TKS...... 112
Excessive Engine Temperature................................... 112
Insufficient Engine Temperature.................................. 113
Low Engine Oil Pressure............................................. 113
Battery Will Not Recharge........................................... 113
Remote Control Is Difficult to Move, Has Excessive Play,
or Makes Unusual Sounds...........................................113
Steering Wheel Jerks or Is Difficult to Turn................. 113
Power Trim Does Not Operate (Motor Does Not Operate)
..................................................................................... 113
Power Trim Does Not Operate (Motor Operates but
Sterndrive Unit Does Not Move).................................. 114
7

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Mercury/Mariner 3.0 MPI ECT Specifications

General IconGeneral
BrandMercury/Mariner
Model3.0 MPI ECT
CategoryEngine
LanguageEnglish