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is it a wastewater problem?

ABS Full Member
Posts: 2

flying a couple weeks ago , right engine would stall when at idle. when warming up TIT on right engine was higher than left , also fuel flow was higher on left. AME adjusted the fuel flow on right engine . Right engine then would not get over 27" MP on take off , and in climb . Landed and AME put fuel flow back to where it was . At runup right engine would not achieve full power. AME thinks waste gate is the problem. There was also oil dripping out from cowl from small tube connected to waste gate area. I'm really concerned about "shotgunning" and replacing parts without a definite diagnosis . Any ideas?

Model: Baron 58P
Posted 10/16/2019 - 11 months ago
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ABS Full Member
Posts: 324

I don't know about wastewater issues on the 58P, but I do know that fuel flow is not field adjustable. The "exception" to that rule requires the fuel pump pressures being set wildly out of spec precluding the fuel servo from functioning.

Posted 10/17/2019 - 11 months ago
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ABS Full Member
Posts: 1407

There are procedures in the maintenance manual to pressure check the wastegate and verify it is opening and closing at the proper pressure.
Your original issue sounds like an idle mixture adjustment. If you are going to adjust the fuel flow, you must use external gauges and follow the procedure in the Continental manual.

Bob Ripley
ABS Technical Advisor

Posted 10/17/2019 - 11 months ago
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ABS Full Member
Posts: 324

Bob

Other than an idle mixture adjustment, I have seen no way of field adjusting the Bendix RSA fuel servo present on the 58P. The typical procedure for adjustment of Continental engines that I think you reference is not applicable.

Posted 10/18/2019 - 11 months ago
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ABS Full Member
Posts: 1407

You are correct I did not notice it was a 58P

Bob

Posted 10/19/2019 - 10 months ago
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ABS Full Member
Posts: 2

Ulpdate: Mechanic checked and cleaned wastegate, it appeared to be working fine . Took off wastegate control unit ? and blew it out with low pressure compressed air. Some sludge blew out. Replaced control unit and engines powered up completely and evenly. As for oil leak, the oil is dripping from a very small pipe located behind a larger tube (from wastegate) . The small pipe appears to be arising from what appears to be a small compressor located on the right side of the engine behind the exhaust pipe. AME has not gotten to it yet. I am still flying the Barron and it is performing well.

Posted 11/14/2019 - 10 months ago
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is it a wastewater problem?