Marco01 Posted August 5, 2013 Report Share Posted August 5, 2013 Just would like to add my inputs on Rotax no start from this side of the Atlantic. My CTSW/100 ps Rotax/2007/800 hours has refuses to start for 2 weeks, not even a small evidence that, at least, sparks plug got something. Listening mechanical and other friends, I tried: - looking at a Spark on spark plug: nothing, even on a dark room. - recharge the battery: not better. - check the fuel if any contamination in the filter, or in the bowl carb: nothing (bowl full, no water, no contamination) - checking ignition key if on 1+2 position is not grounded: Ok - checking impedance from all generator coil: Ok( I compare it with an other Rotax dismounted) - replace the Regulator by a new one: no improvement. - check grounding connection: nothing was looking bad. Finnaly, one person in a shop give me this adivce: with all your test, your engine should work! Stop to touch everything, set your engine in best condition for a good start, and try again. So, back to the airfield and it finnaly starts with the following: - listen Roger witch is strongly pushing on grounding: I have clean and tight all grounding bolt. Changed the one with spot of corrosion. -fully charge the battery again (with an advanced digital charger) 3 A/H was missing. - replace all spark plus by new ones (not done on the last 200 hours) - let run some fuel out. -ignition for 10 s.: nothing (bowl carb. Were empty) - try #2: almost started! (large smile) - try #3: started : flew arround the pattern (on safe altitude): everything worked fine to allow nice local flight in Burgundy) Conclusion: -read and execute Roger's advices! Thanks again for your inputs: no one got your level here! Engine did not start due to a component failure, but due to the addition of several "weakeness" as battery partially discharge, old spark plugs, high air temperature, some grounding not 100% perfect and probably poor fuel quality. Hope this helps.... Link to comment Share on other sites More sharing options...
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