93 f350 idi has dead cylinder at times! Comes to life when warm at times and 3200 ip

[Pat 93 idi]

Has new injectors new injection pump an now a new head! After new head when first started it was fine and fixed so I thought! After about 10 mins running and two quick revs it's back to dead cylinder for the most part! Before the head the one cylinder had 370 psi compression others had 430 to 470! Need help tryin to fix my prob!

 

[Agnem]

Can you track down the missing cylinder by cracking the injector nuts one at a time in turn? If not, drop your Y pipe or up pipes to try and see which bank has the dead cylinder. Once you know what bank it is, you could (short of getting your injectors pop tested, which would be the correct thing to do) swap injectors from one bank to the other, and see if your problem stays with that bank, or follows the injectors. Remember to use new copper washers each time you have to put in an injector.

 

[Pat 93 idi]

It's the last cylinder right head! Have changed all injectors and pump and now new head and prob still really hasn't changed but for about ten mins until I have it 2 quick revs and its back to Rollin blueish raw fuel smoke and if u give it a little fuel it starts to pop and crack out the exhaust but as it warms up it quicks smokin but still missing! As you drive it it doesn't have power till you get above 3200 rpms and then it seems to straighten up! Have replaced the stuff tryin to fix prob!

 

[icanfixall]

Welcome to the forum. Where did you buy the pump and injecters from. When you say new injecters how are you determining this. Did they come in a box individually packaged with two new o rings and a new copper gasket. Please do as suggested above about swapping out the bad injecter for another cylinder thats working properly. Maybe even change it to the front side of the other head and see if the problem follows the injecter. How clean was this injstall. any dirt getting into an injecter will ruin them fast.