We replaced our fuel servo on our '79 Mooney 201 in June at annual time.
They (Money Service Center) told us that the fuel servos last around
1000 hours and then need to be rebuilt. You can tell if it is time
becasue the adjustment screw will be just about out of adjustment.

We were in a hurry for our servo so replaced ours with a rebuilt unit
instead of having ours rebuilt. The cost was around 1.9 AMU's and a
couple hours labor. No where near the 3.0 AMU's you were quoted.

I think if you wanted to send yours out for rebuild it would be around
1.5 AMU's and this includes the lines and spider.

Jon Kraus
'79 Mooney 201
4443H @ UMP

Robert M. Gary wrote:
Today I went out to my plane to fly and found a very odd problem. When
I started the plane after taxiing over the fuel, I could only get it to
run when the mixture was just at the edge of idle cut off. Moving it
even 1/8 forward caused the engine to die right away.
I did some diagnostics. At 1500 RPM I was getting 22lbs of fuel
pressure (normal) and 5GPH in fuel flow (very high). As I moved the
mixture about 1/8 forward that jumped to about 6GPH until the engine
started to die. Running at 2000RPM moving the mixture control to 1/4
caused the engine to totally die.
I run the engine like this for about 20 minutes to make sure it was hot
but no improvement. I even stalled it several times (by moving the
mixture to 1/4 rich) and restarted it. Each restart required 2 seconds
of fuel boost so I don't think it was flooded.
On one restart it ran totally fine, and I was getting about 3.0 GPH at
1500 at 1/4 mixture and about 3.8GPH at 2000 RPM at full rich. So I
shut down again and tried it again and it was having the problem again,
running about 5GPH at 1500 RPM with mixture at the edge of cut-off.

The only thing I can think if is it would be a fuel servo issue. It
seems a little bit intermitant but I seem to be able to make it happen
often enough. Sadly, I'm not at the airport where I normally have
maintenance done and I don't want to fly it now. I've been told to
expect approx $3000 to OH the fuel servo. This is for an IO-360-A3B6
engine.

-Robert