olympian GEH250 not able to start up olympian GEH250 not able to start up Emadshaaban1987 (Electrical) (OP) 23 Jun 22 09:01 olympian GEH250 cracks but can’t startup ,only if fuel valve supplied directly. With out diagnosis tool it is difficult to diagnostic the fault in ECM Is there any way to spot which sensor by unplug the defect one or any other way RE: olympian GEH250 not able to start up LittleInch (Petroleum) 23 Jun 22 10:43 As this is an engine issue, you might be better posting in the Engine and fuel section or mechanical. I assume you mean it "cranks over" not cracked? Also supply a lot more details and history of this machine. what does "only if fuel valve supplied directly." mean?? Remember - More details = better answers Also: If you get a response it's polite to respond to it. RE: olympian GEH250 not able to start up catserveng (Electrical) 23 Jun 22 17:51 As said above, need more info on your package. Like which control system, 1002T or Power Wizard, if Power Wizard which version. If Power Wizard controls then there should be a fault code. MikeL.