Where is the fuel screw located on the fuel pump? have 12 valve wanna make it smoke a lil bit.

 

on top of the AFC housing... take off the 8mm allen head bolt (its kinda fat..) to add more pre boost fuel spind the start wheel (fuel screw) towards the engine... you'll need a flathead screw driver...

 

their is also an adjustment on the back of the pump. it controls the rack travel. or something, i know that it will give you altot of fuel if you turn it in. also high egts

 

are you talking bout the pre boost screw in the afc? if you are when you turn it all your doin is moving the afc foot foward and dumping lots of low end fuel.

 

No the full power screw (the one that effects actual HP) is located on the rear of the pump. Should have a tamper proof rubber or plastic cap on it and also a collar on the screw itself. Dont mess with it if you tow with out an EGT gauge. If you dont tow you can turn it in a turn or so pretty safely but you really do need an EGT gauge.

Turning up the pre 94 Ram diesel injector pump

Also logan wrote this little diddy up!

https://www.dieselbombers.com/1st-ge...-pump-you.html