Boost's Performance Attempt - Page 56 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-02-2007, 09:41 AM   #551
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Can you rent or borrow an Ultra Sonic tester and vacum pump?
Might be your only option to find a tricky leak?
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Old 05-02-2007, 09:42 AM   #552
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ok you forced me in to it.....ill look at it Thursday
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Old 05-02-2007, 08:59 PM   #553
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GP buddy Frankie and Ed Morad both suggested checking the pcv. I did.. looked normal. And THEN... I notice some melted blob of plastic below it. Hmmmm it'* loose and won't come out the top... there'* a few small pieces in there.

Fished them out. Hard plastic. Looks to have melted. Will be calling Ed tomorrow to bring him up to speed.

Thinking maybe this moved and it'* HOPEFULLY causing the issue.
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Old 05-02-2007, 09:18 PM   #554
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Good find, thats a tricky place to look for a problem

Do you have a pcv you can swap in there?
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Old 05-02-2007, 11:56 PM   #555
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Doesn't appear to be the issue or at least the piece in there might still be causing something. I have a possible leak under the snout to SC. Going to have another gasket in place soon.

Currently have bumped the octane up. We'll see it that helps at all.
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Old 05-03-2007, 12:33 AM   #556
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If the engine is misfiring then you can scan for that and identify which cylinder is the culprit. You can also pull the plugs and look for any signs of lean or rich cylinders.

If you have a vacuum leak then it will show up in your IAC count at idle or low rpms.

Are any of the injector skew values over 100?

Cheers,
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Old 05-03-2007, 06:49 AM   #557
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Off to scan and start checking.

Thanks
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Old 05-03-2007, 09:06 AM   #558
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I'm trying to follow this thread but you're getting to technical for me Boosty, where'* technical Ted when I need him. Oh well, off I go since Now I better go see what posts you've made about me.
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Old 05-04-2007, 12:00 AM   #559
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Ensured the charger gasket is 100% sealed to the intake tonight. Still getting the false kr at low rpm low throttle.

Have about 95-97 octane at the moment...

Looking for loose rattling items and finding none. Still looking though
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Old 05-04-2007, 12:06 AM   #560
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Sounds like more of a fueling issue or tune to me.
Not a bad idea to look for false kr but your scans should some bump to go with that kr?
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