5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

gas is getting into my oil on 5.0

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Old 05-06-2006, 02:07 AM
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joe50
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Default gas is getting into my oil on 5.0

what's up, this is my first post and I have a 306 with aluminum heads custom cam, and a spyder intake with 30 pound injectors. I just got the car put together and i'm getting gas in my iol and it's bogging out right around 3500-4000 and up, Woundering what could be causing it do that, i have a brand new aeromotive fpr and i called the company and they gave me some things to check and they said it's good so could it be my injectors that's causing this problem. Thank for the help.
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Old 05-06-2006, 02:35 AM
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black89gt
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Default RE: gas is getting into my oil on 5.0

injects mgiht be too big. might wanna move down to 24's
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Old 05-06-2006, 02:36 AM
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joe50
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Default RE: gas is getting into my oil on 5.0

I have 10.5 compression and i'm going to run a 150 shot of nx
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Old 05-06-2006, 03:08 AM
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Tims 88GT
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Default RE: gas is getting into my oil on 5.0

needs tuned. is the car SD or mass air?
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Old 05-06-2006, 03:32 AM
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joe50
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Default RE: gas is getting into my oil on 5.0

mass air
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Old 05-06-2006, 03:34 AM
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Tims 88GT
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Default RE: gas is getting into my oil on 5.0

is the maf calibrated for the injectors?
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Old 05-06-2006, 03:40 AM
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Hurricanedt77
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Default RE: gas is getting into my oil on 5.0

I think it needs a solid tune, optimum fuel pressure is around 39 psi Or something close to that, i've read having a bit much can cause the car to run funny. As far as the injectors, they wont really cause too much fuel to enter, they really just wont be using nearly their potential..
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Old 05-06-2006, 10:18 AM
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PRO50SC
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Default RE: gas is getting into my oil on 5.0

Gettin' any black smoke out the t-pipes?
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Old 05-06-2006, 12:20 PM
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joe50
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Default RE: gas is getting into my oil on 5.0

just a little abit when i first get on it, I'm concerned about the bogging but i'm more concerned about the gas in oil more than anything.
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Old 05-06-2006, 12:31 PM
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Joel5.0
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Default RE: gas is getting into my oil on 5.0

Fuel getting through vaccum line of the AFPR or injectors leaking....to check for this last possibility, a leakdown test of the fuel pressure (engine off) should show if you have an injector, or injectors that are leaking or staying opened....causing fuel to get to the crankcase... My 2ยข.
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