Jez Foden

Member

• Sep 13, 2017

• #1

The excess fuel screw on the inner side of the 12J injection pump. If i turn the screw inwards (clockwise), will it increase fuel or decrease it ?
Thanks.

 

D

Downsy

Member

• Sep 28, 2017

• #2

Interested in this as well. After chucking some redux into my tank the other week I’m getting a fair bit of black smoke and what looks like unburnt diesel covering the back of the truck.

 

Jez Foden

Member

• Sep 28, 2017

• #3

After some trial and error, it turns out that turning the screw inwards increases fuel and turning it outwards decreases it.

 

D

Downsy

Member

• Sep 28, 2017

• #4

Thanks, I’ll give it a try.

 

Blackburn

Well-Known Member

• Sep 28, 2017

• #5

These video might help for a DPA pump but the metering principle is the same on DPS.


The attached info is stuff I gathered when I had 1 15J engine
The gauarded bolt in side ways to the body operates a plate that moves the metering valve max min.
The other on sets the max RPM

 

Attachments

• Cav DPS pump info.pdf

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  DPS 8520A060A_g.jpg

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Jez Foden

Member

• Dec 7, 2018

• #6

 

Last edited: Dec 26, 2018