it sounded like no fuel and when it did start have to feather it in to keep it running.......fuel pump, filter, injectors all clean......it turns out to be the fuel reg wires were close to the block and melted the casing and was shorting out......6 hrs of hair pulling and it was a fluke that i found it.....no engine light nor would the brain plug tell me what it was......Im going to check my other G30 to make sure this doesnt happen there.