problem with slow start

[MyKAkillsV8s]

ok let me start from the begining just built the ka24de-t new crank, bearings, weisco 9:0:1 pistons, eagle rods arp rod studs, brian crower stg 2 complete cyc head, arp head studs, cometic gasket, walbro 255 fuel pump, all new timing components, started her up for the first time took and still takes almost a full minute of cranking till finally life, then runs and drives fine. timing is good dead on. got pleanty of fuel and a good hot spark. if i turn off and turn back on with in a few minutes it fires right up fine. so far people have said timing issue, or coolant temp sensor or coolant switch. what do u guys think??

[martins_240sx]

I think it could be your fpr (fuel pressure regulator) not keeping the fuel pressure in the lines over long periods of time.

[MyKAkillsV8s]

fuel reg fine. went with hotter plug. replaced both coolant temp and switch just in case. still takes forever to start........

[MyKAkillsV8s]

checked codes got 11, 12, 13, 21, and 34 for 11 if timing is off would this the problem . i think 12 is on cuz i have a n62 hooked up 13 solved replaced both sensors cuz super cheap. 21 not sure why its on (help needed here) and 34 i think is on cuz using stg 2 cams and low comp. pistions. any help is needed thanx guys and gals in advance wanna get this thing to the dyno but need to fix these problems first.

[MyKAkillsV8s]

dizzy off by a tooth fixed and purrrrrrrrrrrrrrrrrrfect