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High idle problem after engine swap... 140-160

Hi folks- I have an injected 122, engine and wiring swapped in from 72-73 142. The engine that came with it started and ran normally, idled fine, but was worn out and needed replacing. I swapped in a good running B20 from a '73 (I heard it run, idle, warm to proper temp, etc..) I have it all plumbed up, but upon starting , the idle goes through red line immediately... I can't find any vacuum leaks. I didn't swap the "brain". Any suggestions? Thanks!






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