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    5.0gi Pefs engine wiring sorta question

    Would it be ok to asume that no pins are broken due to 8 wires coming in and 8 pins out. Since 4 is buzzer at the engine harness is that connected internally? All this to put my mind at ease.
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    5.0gi Pefs engine wiring sorta question

    Pin 4 and 9 in question
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    5.0gi Pefs engine wiring sorta question

    My 5.0gi pefs had to come out of the boat due to crankshaft issue. I picked the boat up and noticed the wiring plug from dash to engine that had 2 pins un accounted for. I wounted the wires and there are 8 wires. I am not sure if its ment to be this way (unused pins) or if the mechanic broke 2...
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    5.0gipefs fuel pressure regulator

    Scott, i got the injectors back from a 2nd testing facility and they passed flow and are matched. If the spring doesn't solve my hesitation/deceleration and engine dying from 1000 to 2000 rpms but not above 2000rpms im sure it will lead to the ECM. Everything else either is new or checks out in...
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    5.0gipefs fuel pressure regulator

    Can the regulator be calibrated or is it recomended to replace the internal spring? The reason is i got a hold of 30psi spring and noticed the torx bolt on the regulator sunk all the way in. I did read somewhere that it is permanent calibration. Injectors are currently getting tested, cleaned...
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    5.0gipefs fuel pressure regulator

    It was taken apart after i changed the fuel pumps. I replaced the diaphram and the gaskets. The spring i did feel mushy. Due to the questionability of the cleaning that was done to the injectors i have to take apart again. Injectors where found to be leaking. Now i have to take apart and send...
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    5.0gipefs fuel pressure regulator

    I assume i need at 29 psi regulator for my GI. Do you know of any cross match to automotive. Engine decels upon throttle. OEM is discontinued.
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    5.0gi PEFS stalls and deceleration

    Update, crank is bent
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    5.0gipefs fuel pressure regulator

    Guys im trying to find the psi that a regulator operates in VP 5.0gi PEFS. i am trying to find the gm or aftermarket equivalent but want to make sure i get the right pressure. Factory is locked in so no messing with it. I am hunting down deceleration issues. Thanks
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    5.0gi PEFS stalls and deceleration

    Joy
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    5.0gi PEFS stalls and deceleration

    Here is a close up of the first time the engine was fired up. The video does not do it justice as now after being installed it is more prevalent. I dropped the boat off at the mechanic today and after a brief view by the mechanic i stated that there is also a noise upon start up after being off...
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    5.0gi PEFS stalls and deceleration

    Yes motor was bought reman long block. I will return with updates as i have an appt to drop the boat off today to have ECM scanned and/or to swap to carb. I will have the mechanic go from top to bottom with a fine tooth comb. If its something simple with the TBI such as timing or a sensor or...
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    5.0gi PEFS stalls and deceleration

    Sorry my bad, no i used part 3862014 for a 5.0giPEFS
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    5.0gi PEFS stalls and deceleration

    No, lol 880 block, that would really flip me off
  15. G

    5.0gi PEFS stalls and deceleration

    To be honest this had been a real pain in the ***. Really considering the swap to carb.
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    5.0gi PEFS stalls and deceleration

    The boat was bought with the 5.0 locked solid, i got a cheap deal out of it. Timing was set from what i saw by non base. Then i came along after a back and forth with who did it and did the timing as per volvo. Paper clip jumping at dtc with a timing light and got 8 btdc, engine still rough. I...
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    5.0gi PEFS stalls and deceleration

    I got someone to look at it and hook up a computer. Even IF it gets resolved i see a carburator in my future. Several people have sugested this due to poor reliability of TBI. Any thoughts?
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    5.0gi PEFS stalls and deceleration

    Idle seems to be running ok after several attempts at starting. When it starts by giving it throttle engine shakes or vibrates. Engine was aligned and drive installed by a shop because of previous misalignment upon engine intall. Once engine starts you very slowly throttle past 2000 rpms it...
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    5.0gi PEFS stalls and deceleration

    No dry as a bone
  20. G

    5.0gi PEFS stalls and deceleration

    Guys maybe someone can point in the right direction. The issue i am having is stalling and deseleration on a new 5.7 that replaced my old 5.0gi. Evrything else is the same cept the engine. The engine has new evrything, if you name it is new. Engine shakes at idle to the point of moving the...
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