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Help me understand oil burning on decel??

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Old Apr 7, 2008 | 06:00 PM
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Default Help me understand oil burning on decel??

I have a Metco breather on pass side valve cover with a crossover tube to the drivers side v. cover. I have a catch can from the valley cover and then to a dump hose at the bottom of the car. I thought I had eliminated the intake system all together maybe not. It only smokes real bad on heavy decel from like 4k and let her wind down for a little. I want to get the GZ vacuum pump to see if that would help but want to make sure I don't have something else amiss first. Thanks guys.
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Old Apr 8, 2008 | 04:08 PM
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i have the same prob, but i have my PCV still hooked up like stock. i am going to try a catch can one of these days. if thats not it then i am going to look into valve guide seals... i know its not my oil rings...
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Old Apr 8, 2008 | 05:16 PM
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Have you done a leakdown test??
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Old Apr 8, 2008 | 08:38 PM
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Good work so far eliminating PCV and breathers from your intake. However, when you let off the throttle, especially at higher speeds, you will pull a crapload of vacuum. You could be sucking oil past your valve guides or through your rocker arm bolts under heavy decel.
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Old Apr 8, 2008 | 08:59 PM
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I am going to try this GZ vacuum pump setup to see if sealing the entire system will work. Most say it will fix most of the issues I am having. The breather setup is fine but under high pressure it will just drip oil onto your header tubes.
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Old Apr 8, 2008 | 10:34 PM
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Valve guide seals, or yes it cold be bad oil rings, or one really bad cylinder.
Do a leak down test before you spend any more money..
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Old Apr 15, 2008 | 11:52 AM
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Mine consumed oil like crazy and smoked on decel. Ended up being that the valve seals were not seated all of the way. Do a leak down, very easy to do. PM me if you need any help...
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