87 300zx cold start problems

[juggathony]

to start off i have an 87 300zx na manual converted to turbo with an 84 engine and ecu the car has major issues starting on cold days it takes sometimes 20 minuets to get it started by cranking it in 7 to 10 sec intervals and slight feathering of the throttle but when its warm it start easier but idles at like 450 rpm and likes to die out i dont know what to try anymore im very mechanically inclined

[evildky]

iacv, I know on the z32 you can open it up and clean it, I can't recall on the z31 and I took mine off years ago, but i suspect it's either not working or stuck