So, just changed the Red Cube location on my IO-360-M1B from between the engine-driven fuel pump and the servo, to between the servo and the flow divider. Previously, when the Airflow Performance pump was turned on, the pressure rose from about 28psi to 30psi, with no spike. After the change, when the pump is turned on, fuel pressure spikes to about 37 psi for about 2 seconds, before falling back to 30 psi. The fuel pressure line is just after the engine-driven pump (3" or so), unchanged from before.
Somewhat concerned about this. Would appreciate any expert explanation, advice.
Thanks!
Merrill
Somewhat concerned about this. Would appreciate any expert explanation, advice.
Thanks!
Merrill