why always #8 injector?

[new big toy]

HI IM STILL LEARNING ABOUT DIESEL ENGINES HERE, BUT IVE BEEN READING ALOT OF PEOPLE ARE HAVING PROBLEMS WITH THE #8 INJECTOR AND IM WONDERING WHAT IS THE ISSUE IS IT A DESIGN FLAW?
CAN SOME ONE TELL ME THEIR THOUGHTS ABOUT IT.

[sea71]

Stop Yelling!!!!!

[sea71]

I mean, turn off your caps. lol.

[new big toy]

anybody out their can give me an answer?

[TurboSevenThree]

Yes. It is a design flaw. It is because on a Powerstroke the last two cylinders in the firing order go #6, #8 ... Being that 6, is immediately in front of 8, it can't catch the "right" amount of fuel so it starves a little. That's why it knocks or "cackles" if you hear about injector cackle, that's it. It's because of this "starving" that the #8 is typically first to go. Some Powerstrokes have a different injector in the #8 hole, that was Ford's cheap fix. A Regulated Return system cures this problem.

[bigwhite7.3stroker]

Originally Posted by TurboSevenThree

Yes. It is a design flaw. It is because on a Powerstroke the last two cylinders in the firing order go #6, #8 ... Being that 6, is immediately in front of 8, it can't catch the "right" amount of fuel so it starves a little. That's why it knocks or "cackles" if you hear about injector cackle, that's it. It's because of this "starving" that the #8 is typically first to go. Some Powerstrokes have a different injector in the #8 hole, that was Ford's cheap fix. A Regulated Return system cures this problem.

well put

#8 is the Long Lead

[Farmy22]

Originally Posted by TurboSevenThree

Yes. It is a design flaw. It is because on a Powerstroke the last two cylinders in the firing order go #6, #8 ... Being that 6, is immediately in front of 8, it can't catch the "right" amount of fuel so it starves a little. That's why it knocks or "cackles" if you hear about injector cackle, that's it. It's because of this "starving" that the #8 is typically first to go. Some Powerstrokes have a different injector in the #8 hole, that was Ford's cheap fix. A Regulated Return system cures this problem.

Hit it on the head...starves for fuel...I dont even know why i'm posting...haha

[new big toy]

Ok thanks for the info. I have a aftermarket spring in the fuel return that bumps up
The fuel pressure to 90 psi, would this get the fuel to the #8 injector faster so it doesn't
Starve for fuel? And what were you talking about a regulated fuel system?

[Southpaw]

Here's a link to a the regulated return

ITP 7.3L "Standard" Regulated Return Kit

[Ryan Rønning]

Originally Posted by new big toy

Ok thanks for the info. I have a aftermarket spring in the fuel return that bumps up
The fuel pressure to 90 psi, would this get the fuel to the #8 injector faster so it doesn't
Starve for fuel? And what were you talking about a regulated fuel system?

90 is kinda high from what I have heard. I dont have one but I have read not to go over 70 psi!