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Old 04-11-2013, 05:37 PM   #21
1turbofocus
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That could be it will be interesting to see as the Zetec fires all Cyl at the same time or he would have 2 Cyl dead all the time and it wouldnt even run, under load tho ?????

Tom
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Old 04-11-2013, 06:11 PM   #22
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That could be it will be interesting to see as the Zetec fires all Cyl at the same time or he would have 2 Cyl dead all the time and it wouldnt even run, under load tho ?????

Tom
Because of wasted spark it will still run, however 3 & 4 will be on the wrong stroke and will run like shit.

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Old 04-11-2013, 09:06 PM   #23
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Ha! That was my first start up after doing the engine.
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Old 04-12-2013, 01:36 AM   #24
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lemme swap in the am before I give tom a call
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Old 04-12-2013, 12:01 PM   #25
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doesn't work, the wires only stretch so far, theres no way I had them switched around

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Old 04-12-2013, 12:07 PM   #26
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damn doubl post
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Old 04-12-2013, 04:24 PM   #27
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You check wire resistances yet? A 3$ voltmeter will do fine for this in case you don't have one.
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Old 04-12-2013, 04:48 PM   #28
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pretty sure theres a vac leak somewhere
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Old 04-12-2013, 08:59 PM   #29
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pretty sure theres a vac leak somewhere
That does sound right, it really doesn't resemble a totally dead cylinder at idle and in the video, the car seems to run fine with some revs and once you get into any boost which would basically negate any vacuum leak idle problems due to the proportionally way smaller air intake volume at idle, it also disproves any doubts about ignition because it seems to be running well with more combustion pressure at speed and when boosting. When you're boosting does it feel down on power any? Does the AFR stabilize more if you're cruising steady speed with some boost present? If the AFR is stablizing under more engine load, in theory that directly points to a vacuum/boost leak.

Neither you or MotherFocus have directly stated that this is a recently built engine, if that's the case it might just be a matter of some intake piping that popped a little loose somewhere.

I don't have any firsthand FI experience, surely Tom and others here could validate or disprove that it's a vacuum/boost leak.
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Old 04-12-2013, 10:04 PM   #30
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a vacuum leak will be almost irrelevant at wot. it will become just a small boost leak. although it would be unmetered it would have to be a large leak and a vacuum leak that large will affect the idle more than any thing.
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