| Malfunction (Symptoms) |
Probable Causes |
Corrective Action (remedies) |
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| Engine fails to start |
Battery weak or terminals corroded / loose |
Recharge or replace if defective. Clean and tighten terminals |
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Distributor cap wet |
Dry by wiping or blow with compressed air |
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Faulty starter action |
Check starting relay and wiring; repair or replace. |
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Automatic choke not actuated properly by operator |
Instruct operator to depress accelerator pedal slightly before cranking with starter |
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Carburetor air cleaner filter excessively dirty |
Clean or replace. |
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Automatic choke valve inoperative because linkage is sticking |
Clean linkage |
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Fuel pump not delivering sufficent fuel due to clogged vent in fuel tank cap |
"Remove and inspect cap; clean as required |
then reinstall. Ensure that rubber splash apron grommet does not contact cap base so as to obstruct air venting." |
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Automatic choke vacuum hose leaking (loose or disconnected) |
Connect or tighten as necessary |
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Water in fuel |
"Siphon fuel from about 1/32 inch above bottom of tank into glass jar to partially fill jar; inspect fluid in jar for layer of water below fuel. If water is present |
repeat procesdure until tank fluid is free of water." |
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| Engine operation is sluggish |
Carburetor air cleaner filter excessively dirty |
Clean or replace |
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Fuel pump output pressure low |
Replace pump |
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Fuel filter clogged |
Replace pump |
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Rocker-arm cover (Crankcase) vent valve vacuum hose not attached to carburetor |
Connect host to carburetor |
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| Rough or too slow engine idling |
Idle jets incorrectly adjusted |
Adjust |
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Crankcase vent valve or hoses clogged |
Clean or replace hoses; replace vent valve. |
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| Slow engine acceleration |
Accelerator pump piston plunger cap worn or damaged. |
Install Chrysler kit PN 3780111 or replace Carburetor |
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Throttle linkage binding or defective |
Repair or replace as necessary |
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| No fuel at carburetor on engine |
Restricted line |
Open fuel line and remove clogging matter or replace unserviceable line. Remove sharp bends and other restrictions |
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Defective pump |
Replace |
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| Fuel mixture too rich; results in weak or rough engine operation |
Fuel mixture out of adjustment |
Adjust air-to-fuel mixture |
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| Engine overheats |
Coolant level too low |
Replenish coolant |
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Radiator pressure cap malfunctioning |
Pressure-test cap. |
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Belts on water pump / fan slipping |
Tighten each belt to 60 - 75 lbs tension. |
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Thermostat defective |
Test |
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Coolant pump impeller defective |
Replace pump |
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| Engine noisy (metallic sounds) |
Water pump impeller bearing lacks lubricant |
Lubricate pump. |
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Fuel pump rocker arm worn or damaged or spring broken |
Replace pump |
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Loose fuel pump mounting bolts |
Tighten |
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| Slow engine warm-up |
Thermostat defective |
Install serviceable thermostat. |
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| Engine misses or has low power |
Defective spark plug(s) |
Replace |
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Spark plug lead(s) disconnected |
Connect |
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Distributor vacuum advance faulty |
Repair or replace. |
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Faulty accelerator pump in carburetor |
Adjust or install kit in pump or replace carburetor |
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| Low oil pressure |
Low oil level |
Add oil as required |
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Faulty oil pressure sending unit |
Replace |
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Thin or diluted oil |
Change oil to correct viscosity. |
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Clogged oil filter |
Install new oil filter. |
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