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What's the prognosis? DR.

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Old 08-21-2006, 11:58 AM
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Default What's the prognosis? DR.

I put a superchager on a 99 SS camero.
After three runs of tuning it started blowing white / blue smoke.
Vac went from 20 to 15, idle is rough.
So what do you think it is?
Old 08-21-2006, 12:17 PM
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head gasket but that is just a wild guess without knowing more on it
Old 08-21-2006, 12:33 PM
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I was thinking maybe it was a piston.
If I take off the oil filler cap I feel a small puff.
What else do you need to know?
Old 08-21-2006, 01:33 PM
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Anyone else have any Idear what the problem is?
Old 08-21-2006, 01:40 PM
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is it just a slightly roughf idle or is it a dead miss. pull the plugs and see what is going on
Old 08-21-2006, 01:55 PM
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Could be a combination. White usually is water/coolant, and blue is usually oil related.
Old 08-21-2006, 02:01 PM
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Originally Posted by Billy177
is it just a slightly roughf idle or is it a dead miss. pull the plugs and see what is going on
it is slightly rough.
The car still has a lot of power.
It also pops through the intake once and while.
Old 08-21-2006, 02:42 PM
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How far off was the tune during the three runs? What were WB O2, spark, and knock at?

I agree with pulling the plugs and doing a leak down to narrow your search.
Old 08-21-2006, 03:01 PM
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Originally Posted by CrazyChris
How far off was the tune during the three runs? What were WB O2, spark, and knock at?



I agree with pulling the plugs and doing a leak down to narrow your search.
the first run I get some ping. knock was at 7.9 not sure how to answer the WBO2 question.
so I opened the high and low octane table and lowered all cell values by 5. then did the second run (no ping)
then I added 2 back into the High / low tables.
then did third run (very little ping)

I'll pull the plugs and see what they look like
Old 08-21-2006, 04:57 PM
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Anything else to look at?
Old 08-21-2006, 05:27 PM
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I have no real expierence with these type of superchargers but is there a chance that a seal could go bad in them allowing engine oil into the intake via the supercharger. the popping through the intake sounds like a different problem possibly in the tune
Old 08-21-2006, 06:16 PM
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Originally Posted by Billy177
I have no real expierence with these type of superchargers but is there a chance that a seal could go bad in them allowing engine oil into the intake via the supercharger. the popping through the intake sounds like a different problem possibly in the tune
Well that is possible i'll check that.
I did mess with the timing.
Old 08-22-2006, 01:19 AM
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So how much timing are you running at peak tq and hp? Do you know what your AF ratio is at??
Old 08-22-2006, 11:01 AM
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Originally Posted by CrazyChris
So how much timing are you running at peak tq and hp? Do you know what your AF ratio is at??
If I am reading this software correctly? The timming is about 35 deg.
AFR = 14.63
Old 08-22-2006, 11:14 AM
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Originally Posted by STKN1STGEAR
If I am reading this software correctly? The timming is about 35 deg.
AFR = 14.63

Way too much timing and way too little fuel!!!
Old 08-22-2006, 11:18 AM
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Originally Posted by badaSS346
Way too much timing and way too little fuel!!!
What should it be?
Old 08-22-2006, 11:22 AM
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Originally Posted by STKN1STGEAR
If I am reading this software correctly? The timming is about 35 deg.
AFR = 14.63
Is that at WOT? Sounds more like part throttle/closed loop.
Old 08-22-2006, 11:40 AM
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Originally Posted by 2xLS1
Is that at WOT? Sounds more like part throttle/closed loop.
the timming veries from about 10 - 35 deg
This is while using EFILive and making scan runs.
it is in SD with the MAF disconnected.
also from idle to WOT
Old 08-22-2006, 11:40 AM
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Originally Posted by STKN1STGEAR
If I am reading this software correctly? The timming is about 35 deg.
AFR = 14.63
WOW, HOLY KABOOM BATMAN! Dude, let a professional tune your car first and then mess around with it later to teach yourself......
Old 08-22-2006, 11:41 AM
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Originally Posted by lilbuddy1587
WOW, HOLY KABOOM BATMAN! Dude, let a professional tune your car first and then mess around with it later to teach yourself......
Yeah I think so !!!!!!!!!!!!




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