You say it starts & cuts out when cold- how long does it have to run for this symptom to go away? How do you keep it running to get past this start/stop issue?
A few things to ponder- how's the fuel line from the regulator to the fuel injector assy? Any chance of a slight rub through, tar build up, etc?
Secondly-How's the fuel shut off solenoid? On occasion I've had them open enough to give initial pressure to the fuel system to start but not enough to allow the engine to run. Once the tar softens the symptom goes away- doesn't happen often but once in a while.....
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