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Thread: Changing a TB42 efi and putting a Tb42 Carby in

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    Changing a TB42 efi and putting a Tb42 Carby in

    Hi All

    Ive got a 1993 tb42efi and it has alot of problems. People that use to own it befor me are saying it needs a new ecu.... But id like to know if i rip that motor out and put a tb42 carby in would i need to change the wiring loom?

    Cheers Zoe

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    Dribble Master Clunk's Avatar
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    Can you elaborate on what "alot of issues" are? Is it dual fuel or petrol only?

    To rule out the ECU, do you know anyone else with an EFi that you might be able to borrow their ecu for a short time?


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    Its blowing heaps of blue smoke, seems to only be running on 2 cyclinders.
    Its petrol.

    No i wont be able to get hold of another ecu either.

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    ECU won't cause blue smoke... thats oil getting into the combustion chambers.
    Would also be unlikely to be the ECU to drop 3 or 4 cylinders but possible I spose... much more likely to be injectors or spark

    Changing the engine will fix both those issues but I wouldn't be going back to Carby unless I was 100% sure the ECU was toast and the engine was stuffed
    Dolphins are so smart that within a few weeks of captivity, they can train people to stand on the very edge of the pool and throw them fish.

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    Ill start checking for spark problems first, is it possible to test the ecu somehow?.

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    Legendary 4bye4's Avatar
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    G'day mate, not to be stupid, but you haven't picked up some contaminated fuel by any chance have you?
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    Unlikely, i brought the Patrol cheap monday, i knew it had problems but we are trying to sus out what the problem could be

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    Quote Originally Posted by Trolzo View Post
    Unlikely, i brought the Patrol cheap monday, i knew it had problems but we are trying to sus out what the problem could be
    By teh time you chase another motor to drop in you will likely buy another car. buy another car and use this as your parts car i'd say to be honest.
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    Patrol God mudnut's Avatar
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    First thing is to do a compression check. Then a compression check with a couple of small squirts of oil onto the bore of each cylinder. If the reading is significantly higher than before the oil, the rings are stuffed. If the reading is low and stays that way, suspect leaking valves.
    Last edited by mudnut; 12th July 2018 at 12:51 AM.
    My advice is: not to follow my advice.

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    Gday Everyone

    We noticed that the raditor was using a fair bit of water very quickly so i assume that the head gasket is gone with this motor.

    I was lucky enough to find another engine with the ecu still attached for $300, i will be replacing this engine with that one in the next coming months. Thank you for all your help.

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