Gert
On the inlet side of the electric fuel pumps, there is a fuel strainer
screen. It can be removed by using a pick or probe and gentley pulling out.
If you have not cleaned this screen, the fuel flow gets obstructed at higher
rpm's and the engine will miss.
I just hade the same problem, however the missing started at about 5300
RPM's. below that the engine ran smooth.
Jim Brown
N398JB
----- Original Message -----
From: "Gert Dalgaard" <lgds@post6.tele.dk>
Sent: Monday, June 04, 2007 4:52 PM
Subject: Re: Europa-List: Rotax 914 / rough running
>
> Both carb springs renewed with stronger and the bowden-cables to are
> brand-new.
> Regards Gert
>
>
> Den 04/06/2007 kl. 18.28 skrev Jeff B:
>
>>
>> Gert,
>>
>> Make sure the carb springs are not weak and are pulling the carbs, full
>> open.
>>
>> Jeff - Baby Blue
>>
>> Gert Dalgaard wrote:
>>>
>>> Hi all
>>>
>>> I have a problem with my Rotax 914 which now have performed 450 hours
>>> without ever missing a hart-beat.
>>> It starts perfect and runs as expected up to 3.000 RPM's.
>>> Above 3.000 it becomes rough and when adding more power it runs even
>>> more and more rough.
>>>
>>> Oil press and temp. comes up in normal range.
>>> MP and all other parameters which can be read from the pilots seat
>>> (R-Dat) looks normal - MP goes up to app. 30" but RPM's "stops" at
>>> about 3.000 RPMs.
>>> In the engine room visual inspection did not uncover the problem.
>>> All small hoses on top of engine in god condition and the same with
>>> air-filter.
>>> Fuel supply up to carb's checked - working OK.
>>> Spark-plugs checked - looks fine.
>>> Ignition checked - left and right - seems to work normal.
>>>
>>> Any suggestions?
>>>
>>> Regards Gert
>>> OY-GDS
>>>
>>>
>>>
>>>
>>>
>>>
>>> 269.8.7/830 - Release Date: 6/3/2007 12:47 PM
>>>
>>>
>>
>>
>>
>>
>
>
>
|