[Shotimes] Throttle body gasket

[Kenneth Epperly]

Under the cover that the ell is on there only is a baffle to keep the liquid 
out of the line.

                Ken
----- Original Message ----- 
From: "George Fourchy" <krazgeo@comcast.net>
To: <shotimes@autox.team.net>; "Mark Mucher" <mmucher@bellsouth.net>
Sent: Sunday, April 09, 2006 3:26 PM
Subject: RE: [Shotimes] Throttle body gasket


> On Sun, 9 Apr 2006 12:14:52 -0400, Mark Mucher wrote:
>
>>Where does it go?  What are the possible areas of restriction?  I tried to
>>RTFM, but I can't find anything - perhaps it's in the emissions FM?
>
> I have a short block in the storage shed, across town, with the heads and 
> fuel rails
> off.  I seem to remember that the hose just goes to a 90 degree el that 
> goes into
> the block and vents the upper crankcase.  Using a flashlight on BD, I can 
> see the el
> just a bit farther to the center of the block than directly underneath the 
> schrader
> valve on the fuel rail.  The other small hose that goes to the front head 
> is
> probably the inlet, and the big hose is the outlet.  Somewhere, though, 
> there needs
> to be a valve to control airflow. otherwise the whole thing would look 
> like a huge
> vacuum leak to the intake.  Back in the old days, the PCV valve pushed 
> into a valve
> cover, and the hose from the other end of that went to a fitting on the 
> carburetor
> throttle body or intake base just below the carb.
>
>>Maybe I should just vent the hose from the front cam cover to the open
>>(ducking flak from tree huggers) for a while to see if that helps.  But it
>>just goes into the intake behind the throttle body and ports into the TB
>>where, again, I could find little or no restriction.  I CAN blow from the
>>cam cover end of that hose thru the TB, but not without a little
>>restriction.
>
> You can take that hose off the head or throttle body, either one, then 
> start the
> engine.  Theoretically there should be a bit of airflow into the head 
> which you can
> detect with your finger by blocking the hose.  If there is no flow, then 
> the EGR
> valve, if there is one, is plugged, and there is your pressure problem.
>
>>Finally, there is a small hose near the IAB the goes to a solenoid and 
>>then
>>to the canister (I think).  That is blocked (with the motor and ignition
>>off), but that's probably normal.
>
> This is the gas tank vent, that sends fumes from the tank to the carbon 
> canister
> under the right fender, and then when the computer senses the need, it 
> opens that
> solenoid and lets the fumes go to the intake.
>
> Hope this helps a bit.
>
> George
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