Fuel Pressure Leak
#1
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Fuel Pressure Leak
I got this truck and it always was a bit hard to start after it sat for a few days. I lived with it. I had my injectors rebuilt because of a differnt issue, and at the same time i was hoping it would have fixed the issue. It didnt. I jumped the fuel pump so it will automatically turn one with the key switch turned on, and it didnt help. I have no fuel leaks at all.
This morning I decided to turn the key on and let the fuel pump pressurize the system, and after 10 seconds i cranekd it up and it started right up. So I know I definately have a leak down in the fuel system. My actual question is what is next in the system I should check out? The fuel pump seems to work. I can hear it pumping when i have teh key switch turned to let it pump. Since the issue happened before and after i changed the injectors. And when i installed the injectors i changed the filter. Would the check valve go bad but not the pump? I know my charcoal canister does have a vacuum line to the throttle body, but i am not sure that will have an effect on this issue.
Thanks for the help.
This morning I decided to turn the key on and let the fuel pump pressurize the system, and after 10 seconds i cranekd it up and it started right up. So I know I definately have a leak down in the fuel system. My actual question is what is next in the system I should check out? The fuel pump seems to work. I can hear it pumping when i have teh key switch turned to let it pump. Since the issue happened before and after i changed the injectors. And when i installed the injectors i changed the filter. Would the check valve go bad but not the pump? I know my charcoal canister does have a vacuum line to the throttle body, but i am not sure that will have an effect on this issue.
Thanks for the help.
#2
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if this a 3vze or 22re? Do you smell gas? If it's a 3vze, check the fuel pulsation damper (rear of passenger side fuel rail), and fuel pressure regulator (front of driver side fuel rail).
#4
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It is possible for the check valve in the pump to go bad and not hold presure. If the pump has a lot of miles on it the check valve has probably worn out.
#5
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I know the truck has 204,000 on it. I believe the pump is original. i may have to pull the body cover in the 4runner to look at the top of it.
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GreatLakesGuy
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