91 cummins fuel screw
#1
91 cummins fuel screw
Hey everyone just got my first Cummins and love it but the I keep hearing about turning up the fuel screw and bumping up the timing on the pump an 1/8 turn. Does anyone have any pics of these thing because I don't know exactly what needs turn and if its clock-wise or not? Any and all advice will be awesome. thanks all
#2
#3
First off..
Then read this thread and look at the links.
https://www.dieselbombers.com/5-9l-r...g-pump-up.html
Then read this thread and look at the links.
https://www.dieselbombers.com/5-9l-r...g-pump-up.html
#4
And remember more fuel only = more heat if don't have the air to burn it efficiently. Any more than modest fuel increase should be accompanied by supporting mods: intake, exhaust and turbo upgrades or you risk bad things happening from excessive combustion temps.
If you haven't already, get EGT and boost gauges installed, as a minimum.
If you haven't already, get EGT and boost gauges installed, as a minimum.
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