paulg18 Posted December 1, 2013 Share Posted December 1, 2013 Hi all. I find that my Thor 100 engine with Walbro carb is running too rich and always has, it still has only about 9 hours on it and I have heard that somehow they run better after 10 hours or so. I have already peppered the underside of my wing with oil spots on one occasion and am keen to prevent it from occuring again. The manual states that the standard calibration of the mixture screw is one and a quarter turns out. For anyone on the forum that has this engine, have they had to adjust the mixture for the same reason and if so how did they find the best position. Also due to the position of the screws I cannot get access to them with the engine running. Quote Link to comment Share on other sites More sharing options...
phil1975 Posted December 1, 2013 Share Posted December 1, 2013 I have a Thor 110, that I had the same issues with, but they all seem a bit oily for the first 10 hours or so as they run in, so you may not actually have a huge problem. Mine also made a mess around the exhaust joins & the prop - again pretty normal. What oil & mix ratio are you running & what is your fuel burn like? Have you spoken to your dealer about it? Quote Link to comment Share on other sites More sharing options...
paulg18 Posted December 3, 2013 Author Share Posted December 3, 2013 Hi Phil, My mix ratio is 50:1 and the fuel burn rate seems to be roughly what Parajet estimate although I haven't made any accurate calculations for fuel usage yet. Parajet did say it should improve with time but I wanted to find out from other owners if this is the case or whether they had to make any adjustments. It sounds as if yours has improved which is good to know. Quote Link to comment Share on other sites More sharing options...
slapper Posted December 3, 2013 Share Posted December 3, 2013 Mine was exactly the same when new, didn't do any adjustments just stuck with it. Now, after about 20hrs it' running fine and no oil spatters. Quote Link to comment Share on other sites More sharing options...
Guest Posted December 4, 2013 Share Posted December 4, 2013 But is your wing covered in oil?? SW Sent from my iPhone using PMC Forum mobile app Quote Link to comment Share on other sites More sharing options...
slapper Posted December 4, 2013 Share Posted December 4, 2013 No, when engine was new and spitting out oil i wouldn't use the engine to pull wing up, only rev up once wing was above me. Now engine is run in i can do power launches without fear of oil on the wing. Quote Link to comment Share on other sites More sharing options...
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