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jfesch(at)earthlink.net
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 Posted: Thu Sep 07, 2006 6:23 am Post subject: RotaxEngines-Rotax 447 |
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Dave
I was took off in my Hurricane and was just getting into climb pitch attitude and notice an audio RPM drop in the 447, with no guage indication. I leveled off and reduce throttle to cruise RPM, looked at my EGTs and notice that #2 cylinder was going through 1000 degrees, #1 cylinder was normal, with both CHTs about 10-20 degrees above normal.
I immediately turned downwind to reentered the pattern and landed with no problems. Now I know what people are going to say with the next statement but I had my reasons and I was not going to attempt to fly. I taxied back to the runway to do a high speed run to see if I could duplicate the issue again. Applied full throttle, since I can not get to full throttle with the brakes and did not want to tie down the aircraft, and noticed the same issue, a RPM drop with full throttle was reached. I didn't have time to notice the other guages and, yes, I did get airborne. I just closed the throttle, landed, and taxied home to put the Hurricane to bed.
I have a new pump, fuel and air filter, and fuel lines on the way, so I am going to replace them to see if that will fix the issue. I am the 4th owner on this aircraft, it is a 1996 with original hours of 265 TTAE and I think it has all the original fuel supply system in it. The aircraft has been flown on a regular basis and hangared all the time.
John
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dave(at)cfisher.com
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| Posted: Thu Sep 07, 2006 7:11 am Post subject: RotaxEngines-Rotax 447 |
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Have you replaced your impulse line to the fuel pump ?
They can collapse and you must use a heavy wall line made for impulse line.
Regular fuel line is not ok.
Dave
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