Description:
Looking for Fuel parts for your vintage Willys or Jeep? Search Fuel by Category or by Diagram
| Excessive Fuel Consumption: | Possible Solution: |
|---|---|
| Tires improperly inflated | Inflate |
| Brakes drag | Adjust |
| Engine operates too cold | Check thermostat |
| Heat control valve inoperative | Check thermostatic spring |
| Leak in fuel line | Check all connections |
| Carburetor float level high | See "Carburetor" section |
| Accelerator pump not properly adjusted | Adjust |
| Leaky fuel pump diaphragm | Replace |
| Loose engine mountings causing high carburetor fuel level | Tighten |
| Ignition timing slow or spark advance stuck | See "Distributor" section |
| Low compression | Check valve tappet clearance |
| Air cleaner dirty | Remove and clean |
| Engine Hesitates on Acceleration: | Possible Solution: |
| Accelerator pump does not function perfectly | Replace piston and rod or adjust |
| Carburetor float lever | Adjust |
| Spark plugs | Replace or clean and adjust |
| Low compression | Check valves |
| Distributor points - dirty or pitted | Replace |
| Weak condenser or coil | Replace |
| Carburetor jets restricted | Remove and clean |
| Excessive engine heat | See "Engine" section |
| Engine Stalls - Won't Idle: | Possible Solution: |
| Improper condition of carburetor | See "Carburetor" section |
| Low speed jet restricted | Remove and clean |
| Dirty fuel sediment bowl screen | Remove and clean |
| Air cleaner dirty | Remove and clean |
| Leaky manifold or gasket | Replace |
| Fuel pump diaphragm porous | Replace |
| Loose carburetor | Tighten flange nuts |
| Water in fuel | Drain and clean system |
| Improper ignition | See "Distributor" section |
| Spark plugs | Clean and adjust |
| Valves sticking | Grind valves |
* Learn more about fuel from the Service Manual for 52-66 M38A1
