Hi there,
I am experiencing some unusual problems with my engine driven fuel pump on my O-320 E3D
Basically, it indicates correctly when down below 6000ft or so, but when I continue climbing up above that, the pressure drops to 0, or at least between 2lbs and 0lbs. The engine never actually splutters so I doubt the pump has actually stopped working and when I start down again, the pressure from the engine driven pump starts to rise back to normal again.
When I bring on my boost pump while showing 0lbs on the gauge, the pressure does rise back to the bottom of the green again, which tells me the gauge is working o.k.
[What I have tried so far]
1.) Checked all pressure lines to verify there are no leaks at the fittings going into the pump as well as those going into the pressure block. All seem to be fine.
[What I am thinking]
1.) The pump does not have a cooling shroud around it, so is heat hurting the pump substantially? Is this a sign that the pump is wearing out? The fact that the pressure readings are correct when I start down (and have significantly more cooling) leads me to believe that his might be the case.
[Questions]
Is my pump just wearing out and needs to be replaced?
Do I need a cooling shroud on this pump to be safe?
Any help anyone can provide would be greatly appreciated.
Thanks,
Hugh.
I am experiencing some unusual problems with my engine driven fuel pump on my O-320 E3D
Basically, it indicates correctly when down below 6000ft or so, but when I continue climbing up above that, the pressure drops to 0, or at least between 2lbs and 0lbs. The engine never actually splutters so I doubt the pump has actually stopped working and when I start down again, the pressure from the engine driven pump starts to rise back to normal again.
When I bring on my boost pump while showing 0lbs on the gauge, the pressure does rise back to the bottom of the green again, which tells me the gauge is working o.k.
[What I have tried so far]
1.) Checked all pressure lines to verify there are no leaks at the fittings going into the pump as well as those going into the pressure block. All seem to be fine.
[What I am thinking]
1.) The pump does not have a cooling shroud around it, so is heat hurting the pump substantially? Is this a sign that the pump is wearing out? The fact that the pressure readings are correct when I start down (and have significantly more cooling) leads me to believe that his might be the case.
[Questions]
Is my pump just wearing out and needs to be replaced?
Do I need a cooling shroud on this pump to be safe?
Any help anyone can provide would be greatly appreciated.
Thanks,
Hugh.