Marine Power 4.3 VORTEC MPI User Manual

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12. Trouble Shooting
Fuel System - Rich
Possible Cause Remedy
Dirty/Clogged Flame Arrester Check/Clean/Replace
Malfunctioning Fuel Pressure Regulator Verify That Fuel Pressure Is Not Too High
Fuel System - Lean
Possible Cause Remedy
Empty Fuel Tank Fill Tank
Vapor Lock Ventilate Engine Compartment to Reduce Temperature
Insufficient Fuel Supply Approximately 60 PSI. Fuel Pressure Must Be Adequate at Wide Open Throttle at Full Load
Poor Fuel Economy
Possible Cause Remedy
Boat Hull Dirty Clean/Check/Adjust
Incorrect Prop Size or Damage Verify with Dealer or Manufacturer
Clogged Flame Arrester Check/Clean/Replace
Low Engine Compression See Dealer
Engine Running Too Hot or Cold Raw Water Engines Operate at 145° F. Closed Cooled Engines Operate at 165°-185° F
Incorrect Fuel Grade Replace
Boat Overload Check Specifications
Weight Distribution Check Specifications
Plugged or Restricted Exhaust Check Exhaust System

Marine Power 4.3 VORTEC MPI Specifications

General

Brand	Marine Power
Model	4.3 VORTEC MPI
Category	Engine
Language	English