dwh91102

Hi guys well after getting my truck back together with the motor & head mods, air box & intake mods, headers , and ignition I think im getting enough air & spark just would like to try some more fuel and see how it performed. So heres the question I'm not sure if i should try the ect mod, have the chip from jet put in (very pricey), or a fuel pump, or regulator. Also i'm not exactly sure how the fuel is regulated on the 3.0.. In the manual it shows something over on the pass. inner fender, any feedback would be greatly appreciated

dwh91102

no ideas

dwh91102

please help I would like to try a mod in the next week or two

wrenchmonster

Not sure what your question is? Are you not generating enough fuel pressure?

Fuel pressure is regulated by the fuel pressure regulator. This is that thing on the end of the fuel rail that looks like a little wooden top with a vacuum line on the top of it. It's job is to allow the fuel pump to make the correct pressure in the fuel rail and then regulate that pressure by returning fuel back to the tank. Some systems are a little different, but this is the jist of it. Anyway, pressure regulators can go bad, but are easy to check. Simply pull off the vacuum line and see if there is any indication of fuel. If you have fuel of the vacuum side, you have a bad regulator.

If your regualtor is good, and your injectors don't fire you either have a contamination problem (stuck injectors, clogged fuel filter) or your pump is not creating enough pressure.

If you are trying to get more fuel I have to wonder why? But really the only way to change this on a port fuel injected vehicle is to change the pulse width of the injectors. That is, the ON time and OFF time of the injector. This function is regulated by your ECM, which monitors all sorts of sensors, primarily the o2 sensors for this function.

Hope this helps.

-Wrench