Troubleshooting; Engine Does Not Start - Volvo Penta TAMD71B Instruction Manual

12 Troubleshooting

12.1 Engine does not start

Starter motor does not turn engine over
CAUSE
• Discharged batteries
• Main switches off
• Poor contact/break, electrical cables
• Starter motor/solenoid (control solenoid) mal-
function
• Water in the engine
• Blown fuse on the Control Unit panel
Starter motor turns over slowly
CAUSE
• Discharged batteries
• Poor contact, electrical leads
The starter motor turns the engine over but it does not start
CAUSE
• Air in fuel system
• Fuel starvation or no fuel
– fuel cocks closed
– fuel tank empty/wrong tank on line
– fuel filters clogged (due to contaminants/
paraffin precipitation in the fuel as a result
of low outside temperature)
• Fuel shut off valve incorrectly connected/seiz-
ing
AB Volvo Penta / Diesel Engine TAMD71B
REMEDY
Charge/replace the batteries (or connect up aux-
iliary batteries see chap. 5.6)
Switch on the main switches
Rectify any open-circuits/loose connections.
Check for oxidation on the contacts. If required,
clean them and spray with damp-inhibitor spray.
Contact authorized service personnel
Contact authorized service personnel. Do not try
to start the engine if there is a possibility that
there is water in the engine.
Replace the fuse on PCB 506-1
REMEDY
Charge/replace the batteries (or connect up aux-
iliary batteries see chap. 5.6)
Rectify any loose connections. Check for oxida-
tion on the contacts. If required, clean them and
spray with damp-inhibitor spray.
REMEDY
Vent the fuel system as shown in chap. 9.8.4
Open the fuel cocks
Fill with fuel/connect the correct fuel tank
Fit new fuel filters (pre-filter and/or fine filters)
Vent the fuel system as shown in chap. 9.8.4
Check that fuel shut off valve has not been
switched on unintentionally
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