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4.2 diesel fuel adjustment

Posted: Sat Jul 21, 2012 5:58 pm
by DanwinGQ
hey all I know there is some info and pics on her somewhere about fuel adjustment for the 4.2 diesel but for the life of me the search feature wouldnt work. :bad-words:
Can anyone give me some tips about giving my mav a little more fuel or some links to find what I need would be a great help.
Thanks

Re: 4.2 diesel fuel adjustment

Posted: Sat Jul 21, 2012 11:20 pm
by turbo gu
there is a thread on it. From memory clockwise richens, anti clockwise leans out. try a 1/4 of a turn at a time

Re: 4.2 diesel fuel adjustment

Posted: Sun Jul 22, 2012 7:22 am
by DanwinGQ
Is this on the top towards the back? The one with the grub screw looking set up with the flat headed screw driver fitting in the top of it?? :oops:

Re: 4.2 diesel fuel adjustment

Posted: Sun Jul 22, 2012 7:47 am
by nissannewby
Its on the back of pump runs horizontally. They normally have a cap on them from factory. You will probably find one of the fuel lines will get in the way of it slightly. I think its the feed line that gets in the way.

Re: 4.2 diesel fuel adjustment

Posted: Sun Jul 22, 2012 9:14 am
by DanwinGQ
So what's the one on top at the back. On top of what Im pretty sure are the fuel lines? Looks a bit like grub screw in the middle of it?

Re: 4.2 diesel fuel adjustment

Posted: Tue Jul 24, 2012 5:36 pm
by DanwinGQ
Found adjustment screw on top back corner of pump. Gave it half a turn and had to turn back the idle a bit. It seems to be going heaps better now. :armsup:

Re: 4.2 diesel fuel adjustment

Posted: Tue Jul 24, 2012 5:43 pm
by blackmav
Got a pyro?

Re: 4.2 diesel fuel adjustment

Posted: Tue Jul 24, 2012 7:03 pm
by DanwinGQ
na man. non turbo at the moment. hope to get a turbo and a few bits and pieces happening in the near future.

Re: 4.2 diesel fuel adjustment

Posted: Tue Jul 24, 2012 11:03 pm
by blackmav
My understanding (insert disclaimer ><) , Turbo or not , you still putting fuel in and it will get hotter egts.
Especially up your way, long pulls produce hotter egts.
Half a turn on mine ,after i put an Intercooler on produced substancially quicker rates of egt rise. While it flew it was rising way too quick towards death and driving via the guage was not gunna happen with the missus using it now and then.

Re: 4.2 diesel fuel adjustment

Posted: Wed Jul 25, 2012 9:25 am
by DanwinGQ
Yeah. Fair call. I don't really drive it at the moment. Have just bought it cheap as a project and am waiting for more funds until I get it on the road. I will Probly get in dyno tuned as soon as I get a chance.

Re: 4.2 diesel fuel adjustment

Posted: Wed Jul 25, 2012 4:06 pm
by patute
here is the link, http://www.outerlimits4x4.com/viewtopic ... 5&t=117867" onclick="window.open(this.href);return false;
I looked at doing it after I had the injector pump changed, but ended up getting it dyno tuned only cost around $200 and was a massive improvement.