Having an issues with fuel low flow thru fuel servo...
Background...
Fuel Servo..
Model: AVX-5VA1
Serial # AV031425
Part List # AVX3015002-1
Mounted on
Lycoming YIO-360-M1B
Serial # EL-36699-F1
Shipped 12/21/15
Just finished up an RV8 and after proper flushing of fuel lines connected the AVSTAR fuel servo verify fuel flow rates...
With ample fuel flow and pressure being supplied from an ANAIR PX375-TC#3 (Rated at 16GPH @ 28PSI.. verified pressure and flow at the input port of the fuel servo... I’m only able to get 4GPH from the output fuel servo port at Full throttle & Full rich.
I have verified an absolutely pristine clean fuel servo input filter.. and no restriction of the input / output fuel servo ports... The fuel servo throttle and richness control has been verified by AP as correct and operate in a normal manner.. (Mixture control to lean stops fuel flow.. Mixture set to rich does give me 4GPH at full throttle)
In addition .. Engine idles and runs great till its demand exceeds 4GPH and the engine begins to stumbles due to lack of fuel flow...
So??? What do you think? Anyone else ever seen this issue ?? A simple suggested fix here? or is it a going to be a fuel servo exchange ?
Thanks
Background...
Fuel Servo..
Model: AVX-5VA1
Serial # AV031425
Part List # AVX3015002-1
Mounted on
Lycoming YIO-360-M1B
Serial # EL-36699-F1
Shipped 12/21/15
Just finished up an RV8 and after proper flushing of fuel lines connected the AVSTAR fuel servo verify fuel flow rates...
With ample fuel flow and pressure being supplied from an ANAIR PX375-TC#3 (Rated at 16GPH @ 28PSI.. verified pressure and flow at the input port of the fuel servo... I’m only able to get 4GPH from the output fuel servo port at Full throttle & Full rich.
I have verified an absolutely pristine clean fuel servo input filter.. and no restriction of the input / output fuel servo ports... The fuel servo throttle and richness control has been verified by AP as correct and operate in a normal manner.. (Mixture control to lean stops fuel flow.. Mixture set to rich does give me 4GPH at full throttle)
In addition .. Engine idles and runs great till its demand exceeds 4GPH and the engine begins to stumbles due to lack of fuel flow...
So??? What do you think? Anyone else ever seen this issue ?? A simple suggested fix here? or is it a going to be a fuel servo exchange ?
Thanks
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