REFLECTOR: Odd fuel pressure Problem

[Scott Derrick]

This is really good news....

I think Ronnie mentioned I can make one by filling the connector that the 
sensor screws into with solder and drilling out a 1/16" hole....

I'll try that today..

thanks all,  this has been a mysterious problem.  Hasn't helped with my 
wife's, feelings about my airplane either....

Sometimes I feel like I'm in this endless series of very odd and 
inexplicable problems,  to add to my "I hate my airplane" feeling at the 
time,  my car's windshield just developed a crack the same day, out of 
nowhere, that bisected the windshield in less than an hour!  Karma?

off to the airport, later....

Scott

At 11:09 AM 11/26/2004, you wrote:
>Scott,
>Here is what I understand. The VM-1000 is a really good instrument. there 
>have been a lot of installation problems but the readings you get from the 
>instrument are correct usually. I have had the same problem with a 
>Lycoming IO-540. It seems that the lycoming fuel pumps do actually 
>fluctuate in pressure. The tolerance on the alarm of the VM-1000 sometimes 
>does not trip but sometimes it does. Visionmicro does have a new software 
>change that permits the delay of the alarm. They also have a recommended 
>fix for the fuel pressure. They recommend the installation of a snubber in 
>the pressure line just before the transducer similar to the one that is in 
>front of the manifold pressure transducer. For some reason I can almost 
>predict the low fuel pressure alarm as I climb through 8500 feet.
>Seems the digital instruments are telling us things we really didn't want 
>to know and would never see in an old analog gauge.
>If you need more info I suggest you call Visionmicro systems. ask for Dave 
>he is a really helpful technical support guy.
>We used to have to make a decision between JPI or Visionmicro for a good 
>digital system but now they are the same company or at least there has 
>been some sort of merger but VisionMicro is still the place to call.
>Why it took so long to happen on your airplane I do not know but I can 
>also go for weeks without any fluctuation alarms which also does not make 
>a lot of sense. I suppose temperature,pressure etc make a difference.
>
>Jack
>N55XL
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