System BACKPRESSURE Check
- Ensure shutoff valve is fully open. Start engine and increase speed to 2200 RPM. When fluid temperature reaches 130°F (55°C), record flow rate and pressure.
- If flow is less than 3.5 gals. (13.2L) per minute, verify correct pump is installed. If correct pump is installed, continue test.
- If pressure exceeds 80 psi (5.6 kg/cm2 ), check lines for kinks or obstructions. If none are found and pressure remains high, proceed to MINIMUM PUMP FLOW TEST .