No fuel pressure???
05-06-2010, 08:08 AM
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No fuel pressure??? My car ran fine on the way to work yesterday, but I went to crank it up to move it inside and it tried to start but then died. Since then it does nothing but turn over with no signs of starting. I have no pressure at the fuel rail, but I can hear my Walbro come on when I turn the key on. I've had the pump for years but I'm wondering do they normally still make noise when they fail? I don't believe it could be the filter since I had no issues prior to this. Any ideas?
05-11-2010, 09:41 AM
#2
Try this: disconnect the feed line at the filter and turn your key to run (you'll need a container, like a small gas can). Put the line in the container enough so you can see if fuel is coming out... it should be flowing like a hard **** 
If it's not, then you probably have either a bad hose connection between the fuel pump and sending unit, faulty regulator, or jacked up intank fuel filter. If it's flowing, then reconnect the line to the fuel filter and disconnect the other end of the filter and repeat. No fuel or shitty flow, bad filter. Good flow, move on to the final test. Disconnect the line at the fuel rail itself and repeat. If it's still flowing the same but you got no pressure at the rails, then your problem is in the tank.... same exact problem I'm having right now. I'm not a fuel expert or anything but hopefully this will point you in the right direction and help out a bit. Good luck with it man 
If it's not, then you probably have either a bad hose connection between the fuel pump and sending unit, faulty regulator, or jacked up intank fuel filter. If it's flowing, then reconnect the line to the fuel filter and disconnect the other end of the filter and repeat. No fuel or shitty flow, bad filter. Good flow, move on to the final test. Disconnect the line at the fuel rail itself and repeat. If it's still flowing the same but you got no pressure at the rails, then your problem is in the tank.... same exact problem I'm having right now. I'm not a fuel expert or anything but hopefully this will point you in the right direction and help out a bit. Good luck with it man
05-11-2010, 01:19 PM
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Try this: disconnect the feed line at the filter and turn your key to run (you'll need a container, like a small gas can). Put the line in the container enough so you can see if fuel is coming out... it should be flowing like a hard **** If it's not, then you probably have either a bad hose connection between the fuel pump and sending unit, faulty regulator, or jacked up intank fuel filter. If it's flowing, then reconnect the line to the fuel filter and disconnect the other end of the filter and repeat. No fuel or shitty flow, bad filter. Good flow, move on to the final test. Disconnect the line at the fuel rail itself and repeat. If it's still flowing the same but you got no pressure at the rails, then your problem is in the tank.... same exact problem I'm having right now. I'm not a fuel expert or anything but hopefully this will point you in the right direction and help out a bit. Good luck with it man
If it's not, then you probably have either a bad hose connection between the fuel pump and sending unit, faulty regulator, or jacked up intank fuel filter. If it's flowing, then reconnect the line to the fuel filter and disconnect the other end of the filter and repeat. No fuel or shitty flow, bad filter. Good flow, move on to the final test. Disconnect the line at the fuel rail itself and repeat. If it's still flowing the same but you got no pressure at the rails, then your problem is in the tank.... same exact problem I'm having right now. I'm not a fuel expert or anything but hopefully this will point you in the right direction and help out a bit. Good luck with it man 
