Starlite Posted May 15, 2017 Share Posted May 15, 2017 Hello there is two screws on my carb. Is there a basic setting on these? And now to the annoying part because when i unscrew the idlescrew on the back side of the carb it jammed. Resulting a broken needlejet and broken threads in the carb body. Luckily i have a spare carb which i used. Unscrewed the same fast needle jet and the same spoob happened again. But this time i got it out alive and noticed the rubber on the needle was loose. Is there a better way to make this work or do i have to buy new needles? Quote Link to comment Share on other sites More sharing options...
DaveT Posted May 16, 2017 Share Posted May 16, 2017 I am confused by the title. MPFI doesn't use a carb, as far as I know. It would have a throttle body. Model & year might help get more replies also. Quote Link to comment Share on other sites More sharing options...
Starlite Posted May 16, 2017 Author Share Posted May 16, 2017 I see. Throttlebody then. Subaru superstation 1989. Quote Link to comment Share on other sites More sharing options...
naru Posted May 16, 2017 Share Posted May 16, 2017 (edited) Use the vertical one to set base idle to 700 for manual and 800 for auto w/engine fully warm. The horizontal one only adjusts fast idle when the FICD(fast idle control device- a solenoid) is energized.(AC on) Dunno about the needles Edited May 17, 2017 by naru Quote Link to comment Share on other sites More sharing options...
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