This is the problem I had. You have tightened up the solderless nipple on a
carb lever arm (where the throttle cable joins it) too tightly and the carbs
are going out of balance.
Try wiggling the throttle a little while it is misfiring and it should go
away. To fix it back off the nut on the solderless nipple two FLATS and try
again. The solderless nipple and the throttle cable should be free to rotate
in the carb lever arm, and it is getting stuck because the nut is too tight.
Read the words in the latest Europa News on page 4. Do not loosen off the
nut several TRURNS as the throttle cable will come out and you will have
more than just plucking ! (one side will go to full throttle).
Another Richard (of Widford !)
>
> Following my report of rough running of my 912S last week, I flew with
> my inspector today to try to replicate the conditions in which the rough
> running occurs.
>
> It seems to happen at the top of a climb, when the aircraft is levelled
> off, speed builds to cruise then I back off the throttle. At this point,
> the engine 'plucks' for a minute or so then smoothes off. I have a C.S.
> prop and if I keep the manifold pressure towards the top end of it's
> range, say 25in. the plucking continues until I back off the throttle
> and reduce the pressure.
>
> The day was rather cool and humid, the windows kept steaming up even
> with the vents open. Is this likely to be carb icing or does anyone with
> rather more experience than me have any other idea's?
>
> Richard Iddon. G-RIXS
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