Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Mar 2004
Location: kent, Wa
Posts: 5
oil in throttle valve

The inside of My 86 944 throttle valve is covered with oil. Why is
oil being sucked into the throttle valve?
She runs great warm, but idle is getting rough when cold...
Only the idle is bad until warmed up, still drives great cold.

__________________
86 944 98k
Old 03-12-2004, 11:08 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Feelin' Solexy
 
Tishabet's Avatar
 
Join Date: Oct 2003
Location: Seattle
Posts: 3,341
Is your air filter stock?
__________________
Grant
1974 Vespa Rally 200, 1974 Vespa Primavera 125, 1963 Solex 2200, 1938 Buick Special, 2008 Mini Cooper S, 2010 Mazda CX-9, 1986 VW Vanagon Syncro Westfalia, 1989 VW Doka Tristar - in the stable
1989 Porsche 944, 1973 VW Beetle - gone but not forgotten
Old 03-12-2004, 11:11 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Mar 2004
Location: kent, Wa
Posts: 5
using K&N air filter
__________________
86 944 98k
Old 03-12-2004, 11:17 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Feelin' Solexy
 
Tishabet's Avatar
 
Join Date: Oct 2003
Location: Seattle
Posts: 3,341
As in, the K&N filter that you're supposed to oil periodically?
__________________
Grant
1974 Vespa Rally 200, 1974 Vespa Primavera 125, 1963 Solex 2200, 1938 Buick Special, 2008 Mini Cooper S, 2010 Mazda CX-9, 1986 VW Vanagon Syncro Westfalia, 1989 VW Doka Tristar - in the stable
1989 Porsche 944, 1973 VW Beetle - gone but not forgotten
Old 03-12-2004, 11:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Sabyre's Avatar
 
Join Date: Jul 2003
Location: Maine
Posts: 529
lol.... GO STOCK OR WALK!
__________________
"We are the music makers and we are the dreamers of the dreams" -Willy Wonka

Maine 4x4 Club www.maine4x4.org
Old 03-12-2004, 11:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Mar 2004
Location: kent, Wa
Posts: 5
Yes. maybe been too long since cleaned and oiled it. will that cause rough-cold idle?? also, its not filter oil in throttle valve its mobil 1
__________________
86 944 98k
Old 03-12-2004, 11:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Feelin' Solexy
 
Tishabet's Avatar
 
Join Date: Oct 2003
Location: Seattle
Posts: 3,341
Are we talking like oil residue in there or legit amounts of oil? Except for oil cominf off your aftermarket filter I can't think of any way for oil to get there.
Having never used a K&N myself, how do you know the oil is not filter oil? Is the filter oil a different color or something? Is it possible the PO used normal oil on the filter?
__________________
Grant
1974 Vespa Rally 200, 1974 Vespa Primavera 125, 1963 Solex 2200, 1938 Buick Special, 2008 Mini Cooper S, 2010 Mazda CX-9, 1986 VW Vanagon Syncro Westfalia, 1989 VW Doka Tristar - in the stable
1989 Porsche 944, 1973 VW Beetle - gone but not forgotten
Old 03-12-2004, 12:18 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Mar 2004
Location: kent, Wa
Posts: 5
NEW INFO. The oil is coming from a hose connected to the
plastic oil filler. the hose runs from the oil fill part to the rubber boot that connects to the throttle valve. dont understand why its sucking oil.
think i'm going to need shop manuals for this car!!
__________________
86 944 98k
Old 03-12-2004, 12:46 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Dec 2002
Location: Richmond, VA
Posts: 484
Ok, you need to replace the O-rings that seal the oil filler/mist seperator to the block.

What is happening is the sump is supposed to be under a partial vacuum so that any combustion chamber blow-by gets scavenged and drawn into the intake plenum via that rubber hose.

When the O-rings start to leak the additional air that is drawn into the sump pulls oil vapor into the intake plenum. What is supposed to happen is only the blow-by gets scavenged, and the oil vapor (or mist) collects on the walls of the filler neck and then flows back into the sump.

The O-rings are a dealer part and should run you about $11.00 for the pair. Be sure to check the part numbers because the O-Rings are different sizes and you need one of each.
__________________
Cliff Hipsher
'87 944 India Red
'86 951 Kalahari Metallic
Old 03-12-2004, 01:11 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
88_944's Avatar
 
Join Date: Apr 2001
Location: HAWAII
Posts: 492
Garage
Quote:
Originally posted by Sabyre
lol.... GO STOCK OR WALK!

Quote:
Originally posted by Porsche944
Ok, you need to replace the O-rings that seal the oil filler/mist seperator to the block.

What is happening is the sump is supposed to be under a partial vacuum so that any combustion chamber blow-by gets scavenged and drawn into the intake plenum via that rubber hose.

When the O-rings start to leak the additional air that is drawn into the sump pulls oil vapor into the intake plenum. What is supposed to happen is only the blow-by gets scavenged, and the oil vapor (or mist) collects on the walls of the filler neck and then flows back into the sump.

The O-rings are a dealer part and should run you about $11.00 for the pair. Be sure to check the part numbers because the O-Rings are different sizes and you need one of each.



LOL!!
__________________
My Black 944

My Gaming Forums. Xbox360gen.com
Old 03-12-2004, 02:18 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
Sabyre's Avatar
 
Join Date: Jul 2003
Location: Maine
Posts: 529
nice

__________________
"We are the music makers and we are the dreamers of the dreams" -Willy Wonka

Maine 4x4 Club www.maine4x4.org
Old 03-12-2004, 02:20 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 08:56 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.