We are going way back in time here and the beginnings of emission control. I don't have my reference material handy, but check the back of the injection pump for two solenoids. If there are two, one of them may be causing the pump to shut off the fuel. If you have two, one is for cold start and one is for fuel shut off during decell. Disconnect both and see if your problem goes away.

Peter
Auto Zentral Ltd.

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Auto Zentral Ltd.