Throttle Body: Testing and Inspection

1. Check the hoses and the pipes for cracks or damage.
2. Check the fuel tank cap for proper operation.
3. Check the fuel tank for deformation, corrosion or cracking.
4. Check the inside of the fuel tank for dirt or foreign material.
5. Check the in-tank fuel filter for damage or restriction.
6. Test the one-way valve for proper operation.
7. To check the one-way valve, lightly breathe into the inlet and outlet. If air passes one-way only, then the valve is good.

INSPECTION
1. Check the throttle body for cracks.
2. Check for restriction of the vacuum port or passage.
3. Check for interference when moving the accelerator cable.