how is the pressure in fuel regulator in mitsubishi outlander V6 3.0 ( 6B31 )
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I wanna use FUEL PRESSURE REGULATOR ADJUSTABLE in my car -mitsubishi outlander 2008 3.0 engine . MY questions are where is fuel pressure regulator in my car and what pressure to adjust for this car .
Hi,Sorry for the delay getting the information you requested.The 2007-2010 Outlander uses a returnless fuel line system. This means that rather than having full pressure plumbed to the engine then bleeding off excess pressure to go back to the tank, pressure is regulated at the tank and maintained in one fuel line to the engine.Because of this, there is no way to install a traditional adjustable fuel pressure regulator in this vehicle; any increasing restriction you were to add would be compensated in the fuel tank..For reference, your operating pressure should be 47 psi at idle, and will spike in the neighborhood of 51-55 with throttle.
Mitsubishi employed and Factory trained ASE certified technician
If I can't install fuel pressure regulator in my car how to increase fuel pressure for better engine response ?
Hi,You could install a higher flow pump, however the excess pressure will still be bled off. What exactly is it you are trying to do with the higher pressure? Is the vehicle engine not stock?Thanks
It's stock I just tray increase HP and make car faster start on crossroad because i feel the car is very slow response when i press accelerator and I ask You because I have fuel pressure regulator and thought it will bi use full for my car
Hi, thanks for the clarification.This is actually a pretty common complaint on this vehicle. While the throttle response is not terrible to begin with or anything, the learned conditions can make it worse than normal. I would recommend having the learned values reset at your local dealer and then drive it more aggressively for the next 50 miles or so and that should correct your issue.Increasing the fuel pressure is not going to improve your throttle response on this vehicle, in fact it would actually have the opposite effect if you were able to do it. On the stock engine, the fuel trim is just a hair on the lean side (primarily for fuel economy), which is exactly where you want to be for the best throttle response. Your combustion will occur faster and stronger the leaner your mixture is until it is either unburnable or until the engine knocks from being too lean then the computer will back off the timing to correct it. If you were to richen the mixture up any by increasing fuel pressure, you would result with a more difficult to ignite mixture, and a bogged-down feeling under moderate to heavier throttle.As I said before, these vehicles have a learned value reset which is very good at adjusting for different driving preferences, the catch is that a dealer scan tool is required to reset them to learn new values.... disconnecting the battery, etc, will not work on this model, you must use the scan tool to reset the learned values.