just put an sr in, and it runs but realy bad, it wont hold idle, sounds like its missfireing and has odd throtle responce, abd then the batt light comes on and there is a buzzing from underneath the dash.
Make sure of all basics. New 6 heat range NGK plugs. Proper timing. properly bled cooling system.
Check timing, plugs, coilpacks, injectors, injector wiring.
And vacumn leaks
He’s got new injectors and plugs. Double check the vacuum lines with Heavy Throttle’s diagram.
about the buzzing…is it a random intermitant buzzing? or is it a constant? my silvia does it too its always done it and Id love to know what the heck it is! doesnt matter if my heater unit is on or anything it just goes into little buzzing fits sometimes!