At this point, you should see maximum pump pressure on your fuel pressure gauge. But I had a similar problem and that was suggested to me. I have a Holley low pressure fuel regulator in line to my 3 Strombergs. Location: Augusta, Ga. Posts: 2, 212. 10-26-2015 12:11 PM.
Let others know what to look out for in the comments below. If your fuel pump requires an external regulator, here's what you need to know before you make your next purchase. I have yet to test drive it. This is accomplished with the use of a diaphragm and seat that restricts the fuel flow and uses a spring to provide pressure adjustability. Anyone know a better way to clean a fuel return line? This seems suspicious, since it doesnt allow me for any further adjustment..... wondering itf it'll go up under boost? Fuel Pressure Regulator functional test: using the appropriate adapter connect the manual vacuum pump to the FPR.
Replace the FPR if necessary. Trust me this gets real accurate, we are talking grams of air per second. By plumbing a by-pass regulator before the carburetor, drag racers can build higher pressure in the feed to help counteract the high g-forces that they experience during hard launches and rapid acceleration. This is going to have a significant effect on the overall performance of your vehicle. To be sure if the problem is with the spark plug, remove it. Misfires can pretty easily be recognized. When a wide open throttle condition as described above occurs, the engine briefly loses its vacuum which allows the spring to force the diaphragm downward closing the return line and thus incrementing the fuel available for the injectors. Check the fuel pump fuse and relay. I'm new to the 'tuning' thing, so bear with me... Is it true that if you adjust your FPR to flow more fuel, that fuel will increase through the whole rpm range though? This is why I'm thinking the problem is in the area of dirt/gasket material somehow getting somewhere that it shouldn't be. Below are the most common symptoms which show that you have a bad fuel pressure regulator: - Reduction in engine performance. You may have to register.
The spring is calibrated in a way that the fuel pressure in the rail is enough for fuel injectors normal demand. I can certainly tune around this. You may also utilize a handy tool to easily remove the screws. It is also important to check for leaking fuel injectors while checking the fuel pressure, as that could also be the cause of the vehicle engine not starting, hard-starting and sputtering. If you notice that the car is not moving any faster despite the pressure that your foot exerts on the accelerator, take this as a sign that there is an issue with the fuel pressure regulator.
5) Fuel Pressure Regulator Cleaning. You do not need to be a trained mechanic to tell if it is indeed the problem or if you have to keep on looking for any other part of the car that can be seen as the culprit! Before you can post: click the register link above to proceed. 15 differential, Bel rx65 radar (hard-wired).
If it's still reading the same after 5 or 10 minutes, the system is holding pressure well. More fuel does not mean more power... Don't forget to replace the regulator o-ring if it not included with the new FPR. It can be subject to wear, especially the diaphragm that is constantly moving up and down.
If you know the return line is clear from the tb to the tank then this is the only other place a restriction could be. Location: Parkersburg, WVa. If this happens and the regulator is "leaking internally, " then fuel may enter the vacuum hose, which will cause various engine problems.