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94 Impreza engine change...wont start. EJ 18.
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Thread: 94 Impreza engine change...wont start. EJ 18.

  1. #1
    Noobinator
    Join Date
    Dec 2011
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    Default 94 Impreza engine change...wont start. EJ 18.

    Hello all. Hope someone out there can help me with this. I got a 94 Impreza with a bad engine from my nephew. Bought a used one from a wrecking yard with 101,000 miles to replace it. All went well with the swap until I tried to plug in the two big terminals at the back of the engine. One of the terminals on the new engine had a different shape to it, making it impossible to plug in. I removed the wiring harness from the old engine and carefully replaced it on the new engine. Every plug seemed to fit fine with no "leftovers". I assumed the new engine was a different year or possibly from a car with a manual trans or something. Any way, I have spark at the plugs and fuel where the hose leaves the filter, but it won't start. I tried a little starting fluid in the intake and it backfires, almost as if the timing is off, but I understand that the timing is controlled by the computer. I have swapped the cam position sensor, the crank position sensor and the coil pack from the old engine. Any help would be appreciated.

  2. #2
    Suby Talker
    Join Date
    Jun 2011
    Posts
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    Default

    You have to check the VALVE TIMING first. May be timing belt jump at either bank or and check the compression if valve timing are OK.

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