Having reassembled G-MFHI, it would seem that our cold starting problems
were due to the adjustment of the torsion vibration damper and thanks to
Conrad, these problems are now behind us.
I've been doing some ground runs to be sure that we can develop and maintain
full power - the first test is great - full power for two minutes, throttle
back and it idles nicely.
When I start again from warm, its a cow to start - sounds like an old bus -
then when it does get going, runs great at 2,3 and 4k but at 5000 RPM, I get
a sudden and quite substantial (300) drop in RPM - Eventually, this goes
away and again, it seems fine.
Is this the infamous vapour locking (I'm currently running on the 2 month
old mogas that was in there) - will this go away with spring / summer
formulation or the cooling I get from flight as opposed to running it on the
ground.
Does anyone have any thoughts on reducing this - we have firesleeve on the
fuel lines but they do run very close to the oil retun pipe (hot side of the
oil cooler).
Regards
Peter
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