m52b20 won't start right


#1

Hey guys i just rebuilt an m50b28 with m50b20 head and when i crank the engine it starts then immediatly stalls. I have to accelerate it a bit so it won’t die and then it idles normaly also in 5-th gear (zf 310 and 4.10 lsd kinda 3rd gear) it runs interupted like low gas. the pump is fine it ran well on my old m20b20. Maybe fpr? I will test it tomorrow on a computere