Outer Limits 4x4 Board

Has anyone ever tuned the fuel pump on an Isuzu 2.8? If so is there a thread that I can view on the subject? Cheers

Hi there

If you are trying to check your injection timing you will need to go to a mechanic that knows how to check the pump timing with a micrometer in the rear of the pump. There is a specific way to do it.

If you are simply trying to get a bit more umff out of your donk there is a 12 mm nut with a screw in the centre of it at the rear of the injection pump near the cut off solenoid. if you crack off the nut and wind the screw in a touch it will richen your fuel mixture. I have done this on numerous Rodeos and it can make a difference.

If you are not mechanically confident don't touch it as it is easy to stuff your fuel mixtures up. If you are going to have a go make sure that you mark the screw in the centre before you go ahead and on ly wind in the screw a poofteenth at a time as a tiny bit can make a big difference.

P.S, this may effect your fuel economy and if you start blowing alot of black smoke you have gone to far.

Hope this helps, DTS.

G'day, thanks for that info. I have adjusted the starwheel and boost compensator but not the mixture screw yet. Exactly how much is a poofteenth? Is it more or less than an oojimiconk? Cheers