brucespears
Member
Hi Everyone! I hope that you are all doing well!
My name is Bruce Spears and I have an RV-8A.
On a recent flight I noticed that my Manifold Pressure was pegged at 33+ and throttle/prop changes didn't reflect in the MP readings on the VM1000. RPM, fuel flow, etc. were reading normally.
When the airplane is on the ground and I provide power to the VM1000, the MP still reads very high, with the engine not running. My understanding is that when the engine is not running, the MP should be close to the barometric pressure at the time. (at least I think I remember that being the case in the past.)
I am in the process of trying to troubleshoot the problem, but confess that I'm a little over my head on this. I've found the troubleshooting information and plan to make the appropriate electrical checks this week.
Any advice on what could be happening would be greatly appreciated. Also, if I find through testing that the MP Transducer is indeed bad, do you have any idea of where I can find a replacement?
Thank you very much for your time and consideration! Have a great day!
__________________
Best regards,
Bruce Spears
RV8-A - N922ES
Houston, Texas (KIWS)
"Home of the permanent RV grin!"
My name is Bruce Spears and I have an RV-8A.
On a recent flight I noticed that my Manifold Pressure was pegged at 33+ and throttle/prop changes didn't reflect in the MP readings on the VM1000. RPM, fuel flow, etc. were reading normally.
When the airplane is on the ground and I provide power to the VM1000, the MP still reads very high, with the engine not running. My understanding is that when the engine is not running, the MP should be close to the barometric pressure at the time. (at least I think I remember that being the case in the past.)
I am in the process of trying to troubleshoot the problem, but confess that I'm a little over my head on this. I've found the troubleshooting information and plan to make the appropriate electrical checks this week.
Any advice on what could be happening would be greatly appreciated. Also, if I find through testing that the MP Transducer is indeed bad, do you have any idea of where I can find a replacement?
Thank you very much for your time and consideration! Have a great day!
__________________
Best regards,
Bruce Spears
RV8-A - N922ES
Houston, Texas (KIWS)
"Home of the permanent RV grin!"