conchp Posted August 15, 2015 Share Posted August 15, 2015 is fuel spitting out of the exaust of my firestom ok? if i lean it it will cut out on full throttle, its more or less only a quarter turn on the hsn from factory? Quote Link to comment Share on other sites More sharing options...
firestorm01 Posted August 15, 2015 Share Posted August 15, 2015 What you are seeing coming from the exhaust is unburnt oil which is quite normal. Usually you will see more oil coming from exhaust if you are running the engine on a higher oil content fuel such as the HPI Power Fuel. Which fuel are you using?? Quote Link to comment Share on other sites More sharing options...
conchp Posted August 15, 2015 Author Share Posted August 15, 2015 model Technics modelsport 25? Quote Link to comment Share on other sites More sharing options...
firestorm01 Posted August 15, 2015 Share Posted August 15, 2015 Nothing wrong with the fuel you are using, what I have noticed with mine and a few mates who also run the hpi g3.0 is that the hsn needs only a very little amount of leaning from the factory setting to put it too lean, hence why I think you maybe having yours quit at full throttle, richen it a little and see how it goes. Don't worry about the unburnt oil spitting out exhaust as it normal. Also think about sealing back plate to crankcase and around base of carb as mine I found leaked air. Leaking air=a basterd to tune engine!!! Quote Link to comment Share on other sites More sharing options...
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