sportav8r(at)gmail.com
Guest
|
 Posted: Fri Aug 31, 2007 5:29 am Post subject: p-mag manifold pressure leak |
 |
|
I developed an obvious MP line leak over the last few flights (rough low-speed idle followed by unrealistically high MP readings at partial throttle, trending worse over the course of several flight hours), which I have traced back to somewhere inside the right P-mag in my installation. The transducer and GRT EIS-2000 set-up reads from ~5 to ~35 in. Hg pressure when I attach a syringe straight to the transducer and push/pull a bit. The entire manifold pressure system holds pressure well when I remove the stub line to the right P-mag and cover the end with my thumb, attaching syringe to the hose that normally goes to primer port on cylinder 3. But if I attach the syringe to the MP port on the right P-Mag, it leaks like the proverbial sieve. The other P-mag holds pressure to its MP input very well.
I will attempt to contact Brad at Emagair today; just wondered if this was a previously reported failure mode. I have the original design orange-anodized boxy-looking Pmags on my O-320. Clearly there's a hole inside there somewhere.
Bill Boyd RV-6A 677 hrs.
[quote][b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
