That will tell you the size of the leak. If the car is slow to accelerate or lacks power when you speed up, then this is another sign that something is wrong with the fuel pump. Low fuel pressure will also make it hard for you to ignite your car's engine. Maye connect a fuel pressure gauge so you can see what's going on. I asked the ford dealer around here and they couldnt figure it out. I've found that if I cycle the key twice and let the fuel pump run twice it will fire right up. The two steel lines going into the tank are very rusty too. I was planning on going to more drastic measures like hooking up my PICO and recording secondary ignition waveforms during the event to try and see if I have some fouling going on or maybe a lean miss. A loose connection could cause a loss of pressure, and therefore your car won't start up again. Join Date: Nov 2005. What PSI range should I be looking for?
I've had this issue once before about a year ago. When i did this, it made no difference to the issues above. And yes, if it's the check valve, you need a new pump. Low Fuel Efficiency. Purge should be fully closed during cranking, so I should be able to disconnect the hose and put my vacuum pump on there and see if it will hold vacuum. Location: Greenville. Check on the bottom of your fuel tank to see if you have metal shavings. What are the signs of a fuel pump going bad? It is very important that you have the right fuel pressure so that your engine can achieve the correct air/fuel ratio. If that maintains the pressure, suspect the check valve in the pump. It goes away and runs good for the most part. What is an acceptable fuel pressure drop when my car is turned off and sitting?
0R engine with a return-less fuel line to the injectors. Ok, I spent the ridiculous $60 price for a new regulator, and that seems to have helped a little, but the truck still looses prime after sitting for a while. If the fuel filter was replaced at some point I would check the unit and see if they marked it with a mileage or a date. Some cars have electric fuel pressure regulators, which are controlled by the fuel pressure sensor. The fuel pipes under the car are often made out of steel or aluminum, and if you hit a stone, there is a risk that these become compressed – which will, in return, result in low fuel pressure. Codes: 29f1 - Fuel pressure plausibility. To prove the regulator is not leaking, use a hose pinch-off pliers to pinch the rubber fuel return line where it goes from the fuel rail to the steel line on the body. The engine usually starts up with little to no issue. If you want to increase the fuel pressure, you will need to install an aftermarket adjustable fuel pressure regulator. My 95 and this 02 both had leaks in the return line that made them hard to start after sitting. Also strange that these new injectors were bad? Neither truck had a diesel leak but allowed air into the return lines!!!
12-28-2011 12:52 PM. Pole71 wrote: Have you cleaned your throttle-body/idle air control? They look pretty rusted and will need to be replaced soon. General Technical & Electrical. You should have seen the pine needles I found jammed behind the drivers side front plastic fender shield when I did the timing belt job. The fuel pump may be going bad if the car has trouble starting, especially after sitting overnight. Just wondering if there is a fuel check valve in the pump that could be leaking pressure, because it starts like the injectors need to be bled. If your fuel pressure sensor reads the wrong pressure, it might trick the fuel pressure regulator into releasing the fuel pressure. Yes, I mean the level sensors in the tank.
I also can't smell raw fuel in the intake manifold when I remove the airbox and stick my nose in there. Typically, the fuel pump can be about a two to three-hour job to be replaced. Also when you say 2-3 cranks are you referring to starter rotations or actually having to try and start the car 2-3 separate times?
I also made a thread about no torque converter lockup. Wouldn't hurt to change the fuel filter if it hasn't been changed out yet. I cleaned it out anyway. In this article, we will discuss the signs of a fuel pump going bad. Air can leak where a fluid cannot. Also carb is stock Edelbrock 1405.