Too‐Lean Mixture

We listed possible causes of the problem too‐lean mixture:

1. Insufficient fuel in tank
2. Partially clogged fuel line
3. Insufficient air pressure in pressure fuel tank
4. Air vent on fuel tank clogged
5. Fuel filter or jets clogged
6. Carburetor float level too low
7. Water in carburetor or system
8. Air leaks in induction system
9. Sticking valves

Truck resource center for engine faults.

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