Boost Leak Detector?
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From: pawhuska,okla.
Boost Leak Detector?
read on here awhile back on a method for finding a boost leak. been searching for a time now with no luck. tightened all boots,disconnected WG temporarily,even ordered a back-pressure sensor. (code read from predator).cant really find any exhaust leaks. (looked for black residue). dont know what else to do,can yall help
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Originally Posted by marvinlong
read on here awhile back on a method for finding a boost leak. been searching for a time now with no luck. tightened all boots,disconnected WG temporarily,even ordered a back-pressure sensor. (code read from predator).cant really find any exhaust leaks. (looked for black residue). dont know what else to do,can yall help
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I think this is what you are looking for: https://www.ford-trucks.com/user_gal...=87281&width=2
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I don't have the actuall component list, but looking at it those are just simple items all avaliable at Home Dopot in the plumbing section. A rubber reducer, end cap drilld for the ball valve that has a fitting for you air compressor.
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From: pawhuska,okla.
yes, but what kind of pressure would i use? simulate the upper pressure limits of boost or a little more?
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From: pawhuska,okla.
just recieved reply from cookies88 with details. hopefully this will keep me from giving to the stealers.
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IF you applied 25 PSI to the intake you're seeing the wastegate actuator rod move, not the EBPV. I assume you did not fnd any air leaks?
The EBPV actuator rod is the one that comes out of the mount pedestal below the turbo. It is actuated by oil pressure and will not move with air applied. To check the EBPV follit the actuator rod from the pedestal out to where it hoos to the butterfly at the turbo's exhaust outlet (probably need to remove the intercooler tube for this). From there you can slide the retaining clip on the rod back towards the turbo and lower the rod straght down to disengage it from the valve.
Once the actuator rod is unhooked you shuld be able to move the butterfly valve freely by hand. If you can not, it is stuck and is the source of your problem.
The EBPV actuator rod is the one that comes out of the mount pedestal below the turbo. It is actuated by oil pressure and will not move with air applied. To check the EBPV follit the actuator rod from the pedestal out to where it hoos to the butterfly at the turbo's exhaust outlet (probably need to remove the intercooler tube for this). From there you can slide the retaining clip on the rod back towards the turbo and lower the rod straght down to disengage it from the valve.
Once the actuator rod is unhooked you shuld be able to move the butterfly valve freely by hand. If you can not, it is stuck and is the source of your problem.
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From: pawhuska,okla.
still have not unhooked actuator rod.while trying i noticed the rod and valve move freely without unhooking. it just flops back and forth. i am getting a code P0172(back pressure sensor-low input) tried wiring valve wide open (pulled towards pass. side). test drove WOT and got 5psi boost with 1200deg egt before exiting 3rd gear. have ordered a new back pressure sensor,should be in next week. worried that the actuator rod just flops back and forth with little or no resistance. is that normal?
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worried that the actuator rod just flops back and forth with little or no resistance. is that normal?
When you are replacing the sensor, be sure to clean out the tube it is attached to.
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