Hi guys this one is a hard one....so motor has been running rough running up then down up then down then stalling. Check fuel side of things 1st all ok, Did the tests on the coils appear ok and have continuity on all leads. But when i tested each coil output with the 716 jump test i got great spark on coil 1 and 4 but 2 and 3 wouldnt jump. So i replaced the power pack with a spare i had from another 140 motor engine i bought for spares. now it runs with out ideling up and down but still cant get the strong 716 spark jump on coils 2 and 3 even though they test ok with multimeter and are within range 275 plus minus 50. All coils sit at around 250 mark. Im wondering if the engine is running only on cylinders 1 and 4. Starts and stops ok and engages prop in forward and reverse and engine runs. Im not sure why i cant get coils 2 and 3 to show strong spark and do the 7/16 spark jump. Im working through the manual re testing components but as the power pack is sealed unit (not like the manual shows) it is hard to test input and output wires to see if some of the input/outputs are working correctly ie from stator etc. Any help appreciated.
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