The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-18-2005, 05:18 PM   #1
Blue_71
Bloo
 
Blue_71's Avatar
 
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,283
milky oil on pcv valve?

i was checkign everything out on the 69, just outta boredom and need of maintnance... the pcv valve and inside the left valve cover under the pcv is covered in milky oil, but the oil pan is shiny black oil..... what could cause this?
__________________
ASE Master Certified-GM Trained-Mechanic
1968 Chevy C30 157" WB Wrecker
1969 Chevy CST/10 SWB
1971 Chevy Custom/10 (first truck) 350, NV3500 5 speed
1971 Chevy K20 Custom Camper 4x4 350 TBI, SM465/NP205
1974 Chevy Custom Deluxe/10
1979 Chevy Custom Deluxe K10 farm truck beater
1989 Chevy K2500

Quote:
Originally Posted by Alan Jackson, Cause I'm a country boy
35s whinin on the asphalt, grabbin mud, throwin up some red dirt
R.I.P. Michael Stilts... I will always love and miss you brother! (9-12-80, murdered 4-9-05)
Blue_71 is offline   Reply With Quote
Old 02-18-2005, 05:32 PM   #2
CPNE
Resident Curmudgeon
 
CPNE's Avatar
 
Join Date: Dec 1999
Location: NH
Posts: 6,662
If you have some milky stuff on the pvc, and are not losing coolant, and drive a lot of short trips in colder climates, this is perfectly normal.

If this is the case, it just means that your oill is not getting warm enough to burn off the excess condensation in the oil, or you need to replace the pvc valve
__________________
Currently on or near the homestead:

67 Chevy SWB 2WD stepside 350/3 on tree (Pat's)
67 GMC SWB 2WD Fleet 402/auto (Brian's under construction)
67 Chevy 3/4 ton 2WD 402/auto (Business Hauler)
67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC)
68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC)
70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC)
71 Chevy SWB stepside (Crushed by tree - parts donor)
72 Chevy 3/4 ton 4WD (Parts donor)
72 Chevy 3/4 ton 4WD Suburban (Parts Donor)
72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC)
81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler)
82 Camaro Z/28 355/Super T-10 (Pat's toy)
93 Caprice 9C1 (Brian's Cop Car)
02 Toyota Camry (Reliable but a souless steel and plastic hulk)
2011 2SS RS Camaro M6 Factory Hurst Shifter

Maybe I need to sell some of this crap

Yet another Bozo with a sawz-all
CPNE is offline   Reply With Quote
Old 02-18-2005, 05:35 PM   #3
Blue_71
Bloo
 
Blue_71's Avatar
 
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,283
that would be it then, ive been driving it on 1/2 mile trips only for about a month now b/c of problems that make me not trust it to go to town. im planning to adjust the valves anyways so ill take the valve covers off and clean them and put in a new pcv valve i have here
__________________
ASE Master Certified-GM Trained-Mechanic
1968 Chevy C30 157" WB Wrecker
1969 Chevy CST/10 SWB
1971 Chevy Custom/10 (first truck) 350, NV3500 5 speed
1971 Chevy K20 Custom Camper 4x4 350 TBI, SM465/NP205
1974 Chevy Custom Deluxe/10
1979 Chevy Custom Deluxe K10 farm truck beater
1989 Chevy K2500

Quote:
Originally Posted by Alan Jackson, Cause I'm a country boy
35s whinin on the asphalt, grabbin mud, throwin up some red dirt
R.I.P. Michael Stilts... I will always love and miss you brother! (9-12-80, murdered 4-9-05)
Blue_71 is offline   Reply With Quote
Old 02-18-2005, 08:13 PM   #4
Don R. Dodson
Registered User
 
Join Date: Mar 2004
Location: Gibsonville, NC
Posts: 42
Quote:
Originally Posted by Blue_71
i was checkign everything out on the 69, just outta boredom and need of maintnance... the pcv valve and inside the left valve cover under the pcv is covered in milky oil, but the oil pan is shiny black oil..... what could cause this?
You just described an engine that is not breathing. Clean out the PCV valve and oil breather and anything else that is involved in getting air into and out of the crankcase area.
__________________
~ Don ~
Don R. Dodson is offline   Reply With Quote
Old 02-18-2005, 08:22 PM   #5
green68c10
Ditto Head
 
Join Date: Oct 2004
Posts: 183
A little bit of condensation is my guess.
green68c10 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:11 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com