Pressure testing the intake system .......Continued

Phil Rose pjrose at
Sat Jul 31 13:30:57 EDT 2004

At 8:37 AM -0700 7/31/04, Chuck Pierce wrote:
>Thanks for the input Phil.
>The plugs have been in for about 20k.

That's close enough to "new" that they shouldn't be an issue.

>  I  like the wine cork plug that is easy to do. I will order some o 
>rings on Monday for the injectors and while I have them out I will 
>test them to check their operation..
>In looking at the Crank case pressure valve it looks like it has a 
>hole that vents to the outside, I would think that it would go to a 
>diaphragm and not leak through to the crank case vent system.

I don't recall any venting to the atmosphere by that valve. The 
diaphragm ought to always seal the valve off from the atmosphere. It 
it easy to install the valve backwards, but even so that still 
wouldn't allow venting to outside. Scott Mockry's Web site has a very 
complete diagram and explanation about the crankcase pressure valve 

BTW, what kind of maximum boost do you get? I assume it's not close 
to 1.8 bar, or else why be looking for leaks?


Phil Rose
Rochester, NY USA
mailto:pjrose at

More information about the 200q20v mailing list