Fuel pressure deops when accelerating
#1
Fuel pressure deops when accelerating
I have a 90 4runner V6 m/t.. Did a fuel pressure test today and when it's idleing the fuel pressure is between 37-39 psi.. But as I slow increase the throttle up around 2500 rpms the fuel pressure would start to drop to zero and then die.. Any thoughts?
#2
Registered User
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Could be a few things.
China built fuel pressure gauge??
Will the engine idle as long as you want??
As the pressure drops the engine stalls
Fuel filter blocked the pump can`t push it through fast enough.
Your circuit opening relay is dropping out and the pump shuts off
The pump sock is full of rust so it can`t keep up with demand
the pump is on it`s last breath before it dies.
China built fuel pressure gauge??
Will the engine idle as long as you want??
As the pressure drops the engine stalls
Fuel filter blocked the pump can`t push it through fast enough.
Your circuit opening relay is dropping out and the pump shuts off
The pump sock is full of rust so it can`t keep up with demand
the pump is on it`s last breath before it dies.
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v_man
86-95 Trucks & 4Runners
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07-23-2015 04:01 PM