Vetus M4.55 Service Manual download pdf (Page 75)

100

Fault finding table

7 Troubleshooting

1 Engine will not crank

Possible fault Remedy

Faulty or discharged battery. Check / recharge battery and

check engine alternator and/or

battery charger.

Fuse blown. Replace.

Loose or corroded connecti-

ons in starting circuit.

Clean and tighten connections.

Faulty starter-switch or faulty

starter-relay.

Check / replace.

Faulty starter-motor or pinion

does not engage.

Check / replace starter-motor.

Starter relay is not engaged

due to a voltage too low;

caused by a very long inter-

mediate cable from engine to

control panel.

Install an auxiliary starter relay

Seized components. Repair.

2 Engine cranks but will not start, no smoke from

exhaust

Possible fault Remedy

Fuel stop valve closed.

Open.

(Nearly) Empty fuel tank.

Refill.

Air in fuel system.

Check and bleed.

Fuel filter clogged with water

and/or contamination.

Check or replace.

Leaking fuel supply line or fuel

injection line.

Check / replace.

Faulty injector/injection pump..

Check, replace if required.

Vent line of fuel supply tank

clogged.

Check / clean.

Exhaust restricted.

Check.

Electric fuel pump not working. Check / clean.

Dirt in the inlet or outlet valves

of the electric fuel pump.

Install a strainer in the fuel line

between tank and engine.

Electric fuel pump filter bloc-

ked.

Check / clean.

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Vetus M4.55 Service Manual Page 75

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