Agree with the above... a little air in it, or faulty supply of +12v to pump solenoid. Check the tightness of the female spade connector at the pump. 240 ignition switches are notorious for going bad too... good idea about mounting a test light somewhere where you can see it.
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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