Hiya,

first post so be gentle

Ive just bought my first petrol plane, a second hand Global Sukhoi which came with a DL50 in it.

It starts really easily but even with the idle screw fully out, and the throttle body 'shut' so the lever wont close it any more it still idles very quickly, to the point its doing nearly 10mph on wet grass and will only land if you cut the ignition.

Also, on full power nose up the engine cuts, as if it is too lean. I richened it out by a quater turn on the high end needle but still exactly the same.

I am wondering if the 2 problems are linked and if there could be air getting in to the engine somewhere else other than the throttle butterflies, or maybe someone has another idea?

I am yet to take the engine out, partly because I'm not sure what I'm looking for but any help would be greatly appreciated.

Thanks in advance,
Martyn