Question about Cars & Trucks
Well, do you smell fuel once the system is charged and not running? Do you see any fuel on ground or along fuel line? There are only a few connections where it could possibly leak. Most likely though is you are correct in assuming that the pump is bad. It should hold pressure. Are you having problems starting the vehicle, or does it take longer to start than it used to? If so it's the pump.
Posted on Oct 19, 2013
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Posted on Jan 02, 2017
SOURCE: 1999 chevy blazer fuel problem
probably not fuel filter . probably going to have to remove the upper intake and replace the fuel injector spider(fuel inj assebly) if it is droping fuel pressure it is leaking into the upper manifold
Posted on Nov 30, 2008
Most fuel injected vehicles have a relay that controls the fuel pump so after the ignition switch has been on for about 5 seconds and the engine is not running, the fuel pump automatically shuts off.
I don't know what your original problem was, but I think if the car runs normally, you have probably fixed your problem. If you don't have a manual, you can probably go to the library and take a look at a manual that covers your vehicle.
Posted on Jan 16, 2009
The only thing left in this system is the fuel pressure regulator. You need to check pressure before the regulator and after the regulator if there is the problem then you need to replace it. I hope this helps. Don't forget to rate my answer.
Posted on Feb 18, 2009
if you have done all the above go ahead and replace the fuel pressure regulator and check the intake manifold gasket for leaks if you need any GM parts you can try Schram auto and truck parts 1-800-292-1032
Posted on Mar 20, 2009
The pump should be capable of at least 60 psi with the return capped. I seriously doubt that the pump is at fault. I fought with this myself once going through three pumps before I found the leak in the flexible line in the tank that goes from pump to metal line.
Posted on May 10, 2009
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