Vetus M4.55 Service Manual download pdf (Page 76)

100

Fault finding table

7 Troubleshooting

3 Engine cranks but will not start, smoke from exhaust

Possible fault Remedy

Air in fuel system. Check and bleed.

Faulty injector/injection pump. Check, replace if required.

Setting of stop valve incorrect. Check / adjust.

Faulty glow plugs. Check / replace.

Incorrect valve clearance. Adjust.

Incorrect injection timing after

overhauling of engine.

Check / adjust.

Insufficient intake air. Check.

Wrong fuel quality or contami-

nated fuel.

Check fuel. Drain and flush

fuel tank. Replace with new

fuel.

Incorrect lube oil SAE class or

quality for ambient tempera-

ture.

Replace.

4 Engine starts but runs unevenly (rough idling) or

stalls

Possible fault Remedy

(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.

Fuel supply line restricted. Check / clean.

Incorrect valve clearance. Adjust.

Idle setting too low. Check/ adjust.

Exhaust restricted. Check.

Wrong fuel quality or contami-

nated fuel.

Check fuel. Drain and flush

fuel tank. Replace with new

fuel.

Clogged filter of electric fuel lift

pump.

Check / clean

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Vetus M4.55 Service Manual Page 76

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