Need Help! Excessice crankcase pressure - Page 2 - Mazda3 Forums : The #1 Mazda 3 Forum
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post #11 of 24 (permalink) Old 10-01-2015, 12:06 AM Thread Starter
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Well from what can figure...


I believe that when the intake manifold was connected to the PCV Valve, it would draw vacuum on the crankcase whenever the PCV valve opened, which it is no longer doing now that the catch can has been installed and the intake manifold was capped off and the PCV valve and cam breather going to the Catch can. With that loss of vacuum to the crankcase makes too much positive crankcase pressure.


So I plan on deleting the PCV valve. like I this thread How to "delete" PCV valve - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum


Than somehow put a line from the intake manifold into the Catch can system. putting vacuum back on the block.
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post #12 of 24 (permalink) Old 10-01-2015, 08:57 AM
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Wait.... are you saying you never connected the OCC back to the intake manifold?

If so, that's your problem. You installed the OCC wrong.

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post #13 of 24 (permalink) Old 10-01-2015, 06:20 PM Thread Starter
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Quote:
Originally Posted by XCNuse View Post
Wait.... are you saying you never connected the OCC back to the intake manifold?

If so, that's your problem. You installed the OCC wrong.


Yes.


the instructions that came with the Corksport OCC told me to block off the intake manifold with an included cap. then hose from PCV at block to a t-fitting that connected the valve cover breather. then that hose went to the OCC. After which the hose on the OCC went to the air intake.


How is it supposed to be installed?
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post #14 of 24 (permalink) Old 10-01-2015, 07:22 PM
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Shouldn't you still have vacuum from ur intake? Damond motorsports it's coming out with block off plate for our cars prolly need more vacuum, are you sure ur bottom pcv system isn't working? Ur check valve could be bad, pcv catch can set up kinds fuck with my brain a lil hard for me to comprehend but seem simple enough of our car since it's all vacuum, but if corksport says this works for a regular 3 then it should n no one really talks about na catch can setup for our cars either why I never installed one...or two n then we have egr don't we not sure if the block of plate cures that to

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post #15 of 24 (permalink) Old 10-01-2015, 08:56 PM
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It's supposed to be connected to the intake. It needs... requires, the vacuum. There is no way that is what the install instructions for the Corksport say. Not a chance.

To be honest though, the NAs really don't need them, not really.
99% of the time they just create problems, which is exactly what yours has done.

Turbo, sure, I'll argue for them. Low power NA... no.

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post #16 of 24 (permalink) Old 10-01-2015, 09:02 PM
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He has it posted on the first page

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post #17 of 24 (permalink) Old 10-04-2015, 02:42 AM Thread Starter
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Quote:
Originally Posted by XCNuse View Post
It's supposed to be connected to the intake. It needs... requires, the vacuum. There is no way that is what the install instructions for the Corksport say. Not a chance.

To be honest though, the NAs really don't need them, not really.
99% of the time they just create problems, which is exactly what yours has done.

Turbo, sure, I'll argue for them. Low power NA... no.


It is connected to the intake. But not the intake manifold as per their instructions. There is a way that the install instructions say that....Because they do. That's why I listed the link to them.


Yes I can agree they just create problems on NA because I am having one lol. But I cant agree that they don't need them. My intake manifold was coated in oil on the inside before I rebuilt it. I decided to prevent that on a new rebuild that I would install a OCC. OCC were not just built for turbo cars.


What I am going to do is plug off the intake. then reroute the vapor line (line from can) to the intake manifold port. Hopefully the manifold vacuum (instead of ported vacuum from cam case) to the system will solve the problem


But thank you for taking the time to respond...
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post #18 of 24 (permalink) Old 10-04-2015, 02:46 AM Thread Starter
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Quote:
Originally Posted by 3.2s View Post
Shouldn't you still have vacuum from ur intake? Damond motorsports it's coming out with block off plate for our cars prolly need more vacuum, are you sure ur bottom pcv system isn't working? Ur check valve could be bad, pcv catch can set up kinds fuck with my brain a lil hard for me to comprehend but seem simple enough of our car since it's all vacuum, but if corksport says this works for a regular 3 then it should n no one really talks about na catch can setup for our cars either why I never installed one...or two n then we have egr don't we not sure if the block of plate cures that to

Yes it should but I am thinking maybe that the vacuum from there isn't strong enough ie. ported vacuum. So I am going to take that hose and connect it to the intake manifold and hopefully the full manifold vacuum from there will cure the problem ie. start opening the PCV valve and releasing crankcase pressure.
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post #19 of 24 (permalink) Old 10-05-2015, 07:25 AM
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Idk where u have ur can mounted but u may need to move it hopfully that fixes ur issue report back

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post #20 of 24 (permalink) Old 11-21-2015, 04:52 PM
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Ever fix ur issue??

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