Swammelstein Rolls-Royce

PossibIe Cause

Action

1 Engine fails to start; starter motor inoperative

1(a) Gearchange selector out of neutral position or neutral or park position on cars fitted with torque converter transmission

(b) Parking lamp switch in park position (early cars only)

(e) Break or high resistance in battery connections and starter relay connections

(f) Auxiliary starter relay faulty

(g) Starter motor commutator or brushes in poor condition

 

 

 

 

(h) Defective starter motor

1(a) Move gear lever into neutral position or neutral or park position on cars fitted with the torque converter transmission

(b) Return switch to central position

(c) Fit new fuse (see Chapter M)

(d) Charge battery and check specific gravity (see Chapter M)

(e) Clean all terminals and repair any broken connections (see Chapter M)

(f) Fit new relay (see Chapter M)

(g) Clean or machine commutator as necessary and renew brushes (see Chapter M). If the overall condition of the starter motor is poor, a new or reconditioned starter motor should be fitted

(h) Remove and examine the starter motor (see Chapter M)

2 Engine fails to start; starter motor operates but fails to turn engine

(b) Fault in starter circuit

2(a) Check voltage supply across terminals with battery under equivalent starter motor load (see Chapter M)

(b) Examine starter circuit connections and starter switch (see Chapter M)

Possible Cause

Action

(c) Defective starter motor

(d) Starter motor spinning but not engaging

(c) Remove and examine the starter motor (see Chap~er M)

(d) Check solenoid for correct operation (see Chapter M)

3 Engine fails to fire

3(a) No fuel at carburetters

 

 

 

(b) Defective ignition

 

 

 

 

 

 

 

 

 

 

 

(c) Excess fuel in corn-bustion chamber

 

 

 

 

(d) Incorrect metering of fuel by carburetters

3(a) Check fuel level in fuel tank. Check operation of fuel pumps and examine fuel pipes for blockage or excessive leakage (see Chapter K)

(b) Examine leads and connections to ignition switch, battery, coil, distributor contact breaker gap. (if fitted)
Check operation and condition of contact breaker points (burnt points may indicate a faulty condenser). Test condenser and coil. Examine distributor cap for tracking. Remove, clean and adjust sparking plugs. Check ignition timing (see Chapter M)

(c) Remove, clean and dry sparking plugs. Turn engine with sparking plugs removed, to blow out excess fuel. Check carburetters and controls for correct operation (see Chapter K)

(d) Check level of floats. Examine jets for blockage. Examine needles for distortion. Examine filters in the float chamber caps.
Examine float chamber needles for freedom of movement and wear.
Examine jets for wear and correct settings.
Refer to Chapter K

4 Engine fails to fire (hot engine only)

4(a) incorrect choke operation

4(a) Ensure that the choke is not on the fast-idle step of the cam (trigger choke by depressing accelerator pedal with engine stationary). Examine the choke controls for freedom of movement. Examine the bi-metal coils to ensure that they are correctly operating the choke (see Chapter K)

Possible Cause

Action

5 Poor engine idling

5(a) Throttle butterfly valves not synchronised

(b) Incorrect mixture

(c) Sticking carburetter piston caused by a bent damper rod

(d) Incorrect ignition timing

 

(e) Air leaks in induction system

5(a) Correctly adjust throttle butterfly valves (see Chapter
K)

(b) Tune the carburetters (see Chapter K)

(c) Carry Out the check given in Chapter K

 

(d) Check the ignition timing and correct if necessary (see Chapter M)

(e) Examine the induction manifold joints, carburetter joints and manifold vacuum connections (see Chapter K and Section E4)

6 Incorrect engine idle speed

(b) Choke controls incorrectly adjusted or sticking

(b) Ensure correct operation and freedom of movement of choke controls (see Chapter K)

7 Poor engine idling (black smoke from exhaust)

7(a) Flooding of the float chamber or the jet

7(a) Examine floats and needle valves in the float chambers. Check the float height (see Chapter K)

8 Irregular running; engine misfiring

8(a) Dirty or defective sparking plugs

 

(b) Defective ignition circuit

8(a) Clean and examine sparking plugs. Examine insulators.
Check gaps~ Renew plugs if necessary (see Chapter M)

(b) Examine all leads for security Examine the L.T. and earth
leads in the distributor for damage to the braiding. Ensure that the wires are not trapped by the distributor cap. Examine the contact breaker spring connections and the lubricating pad spring connection for sectinty (if fitted). Examine the rotor for signs of tracking. Check the contact breaker gap. Examine the condition of the points. Check the operation of the coil. Check the carbon brush for freedom of movement in the distributor cap (see Chapter M)

Pomible Cause

Action

(c) Air leakn in induction system

 

(d) Valve8 not seating correctly

(e) Defective cylinder head gasket(s)

(c) Examine the induction manifold joints, carhuretter joints and manifold vacuum connections (see Chapter K and Section E4)

(d) Examine the valves for freedom of movement, also examine valve seats and valve springs

(e) Remove the cylinder head(s) and examine the gasket(s). Refer to Section E4