chepburn
Well Known Member
Hi,
On the last few initial starts on my IO 360A1B, I have noticed an abnormal low fuel pressure… starting at around 3-7 PSI. I watched and timed it today and it slowly rose to its normal value of 29-30 psi after about 90 seconds. Boost pump was off on purpose.
I initially prime with boost on and FP was nominal at about 35psi before I turned it over. Engine ‘sounded’ normal on start, no apparent falter while the pressure slowly rose. I also got a low FP alert after start which never happens.
Is this a sign of an impending mechanical pump failure?
Taking off the cowl now to inspect
On the last few initial starts on my IO 360A1B, I have noticed an abnormal low fuel pressure… starting at around 3-7 PSI. I watched and timed it today and it slowly rose to its normal value of 29-30 psi after about 90 seconds. Boost pump was off on purpose.
I initially prime with boost on and FP was nominal at about 35psi before I turned it over. Engine ‘sounded’ normal on start, no apparent falter while the pressure slowly rose. I also got a low FP alert after start which never happens.
Is this a sign of an impending mechanical pump failure?
Taking off the cowl now to inspect