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Fiat 500 Factory Service Manual (2007-2024)22 · Fault diagnosis
22 · Diagnostics

Engine oil leaks

Make
Fiat
Model
500 Factory Service Manual
Year
2007–2024
Section
Consumption /leaks/ wear › Engine oil leaks
Fault diagnosisEngine oil leaks

ENGINE OIL LEAKS

1.2 8v, 1.4 16v

An engine oil leak can be seen with consequent dripping and/or fouling of the engine

TEST RESULTS
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION

Carry out an initial visual inspection to locate the component that is leaking or the area of the leak.

If the visual inspection was not enough, wash the engine, dry it and spread talc on the parts involved: carry out a road test to identify the leak.

Move on to Step 1

1. Leak from the exhaust cap.

2. Leak from the sump.

3. Leak from the oil filter.

4. Leak from the engine gaskets.

1. Move on to Step 1.

2. Move on to Step 2.

3. Move on to Step 3.

4. Move on to Step 4.

1DRAIN PLUG CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition and seal of the oil drain plug.Move on to Step 2

1. Drain plug not intact.

2. Exhaust cap tightening not correct.

1. Replace the drain plug

Op. 1020A30 ENGINE OIL DRAIN PLUG - REPLACE

2. Restore the correct exhaust cap tightening.

2OIL SUMP CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check:

- the condition of the oil sump;

- the sealant seal between the sump and cylinder block/crankcase;

- that the sump fixing bolts are correctly tightened.

Move on to Step 3

1. Oil sump damaged or distorted.

2. Sealant seal not effective.

3. Incorrect tightening of retaining bolts.

1. Replace the sump

Op. 1020A20 CRANKCASE OIL SUMP - R.R CLEAN SURFACES FOR SEALANT APPLICATION

2. Restore the correct sealant seal.

3. Restore the correct tightening of the retaining bolts.

3OIL FILTER CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check:

- the condition of the oil filter;

- the seal and condition of the seal;

Move on to Step 4

1. Oil filter damaged or distorted.

2. Oil leaks from the heat exchanger.

1. Replace the oil filter and seal

Op. 1084C10 ENGINE OIL HEAT EXCHANGER - R + R

2. Replace the heat exchanger

4ENGINE GASKET CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Access the oil seal rings on the crankshaft and camshafts.

Check the seal of these gaskets.

End of diagnosis

1. Crankshaft seals damaged.

2. Camshaft seals damaged

1.Replace the seals concerned.

2.Replace the seals concerned.

1.3 Multijet

An engine oil leak can be seen with consequent dripping and/or fouling of the engine

TEST RESULTS
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION

Carry out an initial visual inspection to locate the component that is leaking or the area of the leak.

If the visual inspection was not enough, wash the engine, dry it and spread talc on the parts involved: carry out a road test to identify the leak.

Move on to Step 1

1. Leak from the exhaust cap.

2. Leak from the sump.

3. Leak from the oil filter.

4. Leak from the engine gaskets.

1. Move on to Step 1.

2. Move on to Step 2.

3. Move on to Step 3.

4. Move on to Step 4.

1DRAIN PLUG CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition and seal of the oil drain plug.Move on to Step 2

1. Drain plug not intact.

2. Exhaust cap tightening not correct.

1. Replace the drain plug

Op. 1020A30 ENGINE OIL DRAIN PLUG - REPLACE

2. Restore the correct exhaust cap tightening.

2OIL SUMP CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check:

- the condition of the oil sump;

- the sealant seal between the sump and cylinder block/crankcase;

- that the sump fixing bolts are correctly tightened.

Move on to Step 3

1. Oil sump damaged or distorted.

2. Sealant seal not effective.

3. Incorrect tightening of retaining bolts.

1. Replace the sump

Op. 1020A20 CRANKCASE OIL SUMP - R.R CLEAN SURFACES FOR SEALANT APPLICATION

2. Restore the correct sealant seal.

3. Restore the correct tightening of the retaining bolts.

3OIL FILTER CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check:

- the condition of the oil filter;

- the seal and condition of the seal;

- the condition of the water-oil heat exchanger

Move on to Step 4

1. Oil filter damaged or distorted.

2. Oil leaks from the heat exchanger.

1. Replace the oil filter and seal

Op. 1084C10

2. Replace the heat exchanger

4ENGINE GASKET CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Access the oil seal rings on the crankshaft and camshafts.

Check the seal of these gaskets.

End of diagnosis

1. Crankshaft seals damaged.

2. Camshaft seals damaged

1.Replace the seals concerned.

2.Replace the seals concerned.

Parts & tools for this job For 2007 Fiat 500

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