mrbobs48 Posted October 15, 2016 Report Share Posted October 15, 2016 My 48 Plymouth has great engine power in 1st and second gear, but when I go to third it looses rpm in about a minute. Have to shift to second to get power again. Rebuilt carb and fuel pump. Gas line clean and clear. Quote Link to comment Share on other sites More sharing options...
dpollo Posted October 15, 2016 Report Share Posted October 15, 2016 Have a look at both the mechanical and vacuum advance systems in the distributor. 1 Quote Link to comment Share on other sites More sharing options...
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