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  1. #1

    2003 Virage I Issues Backfiring

    Backfires out the exhaust when trying to start and only if you give it throttle. Had the emm repaired, has spark, has a different stator in it, getting fuel, plugs are getting wet, checked voltage at injectors 25-30 volts, unhooked tps, checked reeds, found it had no fuel pressure, drained old fuel and repaired the pos regulator that fell out of the top of the fuel pump housing. Now I have 20-25 psi. Checked crank indexing through injector holes...180. I am at a loss, oh yeah, checked battery voltage also....it's over 10.6 while cranking. I do have a identical machine with it and I tried swapping the emm (Which this emm was also just repaired) and injectors off the other machine and that did nothing but made a bang louder than my .40 going off. Any input would be appreciated .


  2. #2
    jackofalltrades's Avatar
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    Ohm check the crank position sensor and make sure its good or better yet swap it from your other ski.

  3. #3
    Tried that, also tried swaping a different start/stop switch just for the heck of it. Still nothing.

  4. #4
    jackofalltrades's Avatar
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    The only other things I can think of is sheared flywheel key, flywheel damage, loose magnets on the flywheel. For some reason its firing out of time thats for sure. Dont know if its possible on your ski but are the plug wires reversed? When did the ski start doing this?
    Last edited by jackofalltrades; 09-01-2011 at 04:44 PM.

  5. #5
    jackofalltrades's Avatar
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    Another thought.. Are the signal wires reversed on the coils?

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