ca18det running very strange. Hesitates on load - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ANDY black s13 · 12-06-2017, 01:42 PM

possible boost leak, videos on you tube will explain how to do it better than me
pressure testing it may save swapping more parts you don't need
the OE fuel pump wiring can go bad with age and lower the pump voltage,
I guess it's got a walbro 255 lph pump already?
the badly designed OE tank needs over a 1/4 of fuel
but this reads as more like a boost leak so far

low idle speed when cold could be Idle air control valve not working properly they came get stuck
from engine crud build up inside or just fail

12-06-2017, 01:42 PM	#4
ANDY black s13 Zilvia Member Join Date: Mar 2012 Location: erith kent england Age: 57 Posts: 153 Trader Rating: (0) Feedback Score: 0 reviews	possible boost leak, videos on you tube will explain how to do it better than me pressure testing it may save swapping more parts you don't need the OE fuel pump wiring can go bad with age and lower the pump voltage, I guess it's got a walbro 255 lph pump already? the badly designed OE tank needs over a 1/4 of fuel but this reads as more like a boost leak so far low idle speed when cold could be Idle air control valve not working properly they came get stuck from engine crud build up inside or just fail