Fresh Rebuild 67 442 PCV Sucking Oil
Thread Starter
Registered User
Joined: Jul 2012
Posts: 69
From: Glastonbury, Ct.
Registered User
Joined: Jul 2009
Posts: 5,186
From: Birmingham,Alabama
[QUOTE=GM MUSCLE;1134185]If my intake gasket is leaking at the bottom inside, will it give me these symptoms of smoking out the tailpipe and sucking oil out the pcv?[/QUOT
Bottom line,unless there's nothing obvious in the vent system,the only option is to pull the intake. Chances are if the intake gasket is leaking pulling oil in with vacuum,it will be leaking water also. I know it's hard taking an engine apart but what's the option? From what I see,there's nothing wrong with your vent system,so...........
Bottom line,unless there's nothing obvious in the vent system,the only option is to pull the intake. Chances are if the intake gasket is leaking pulling oil in with vacuum,it will be leaking water also. I know it's hard taking an engine apart but what's the option? From what I see,there's nothing wrong with your vent system,so...........
Thread Starter
Registered User
Joined: Jul 2012
Posts: 69
From: Glastonbury, Ct.
[QUOTE=66-3X2 442;1134194]
You're right Thank you
If my intake gasket is leaking at the bottom inside, will it give me these symptoms of smoking out the tailpipe and sucking oil out the pcv?[/QUOT
Bottom line,unless there's nothing obvious in the vent system,the only option is to pull the intake. Chances are if the intake gasket is leaking pulling oil in with vacuum,it will be leaking water also. I know it's hard taking an engine apart but what's the option? From what I see,there's nothing wrong with your vent system,so...........
Bottom line,unless there's nothing obvious in the vent system,the only option is to pull the intake. Chances are if the intake gasket is leaking pulling oil in with vacuum,it will be leaking water also. I know it's hard taking an engine apart but what's the option? From what I see,there's nothing wrong with your vent system,so...........
Registered User
Joined: Jul 2009
Posts: 5,186
From: Birmingham,Alabama
It's always good to use sealer on anything that might be an issue. Water passages especially and around where there might be a vacuum issue. It's engine building 101. When you pull the intake and see nothing wrong,change the lifters. I'm telling you there was a huge problem with defective lifters flooding the covers and making the engine pull oil in and smoke.
Last edited by 66-3X2 442; Nov 1, 2018 at 10:07 AM.
Thread Starter
Registered User
Joined: Jul 2012
Posts: 69
From: Glastonbury, Ct.
It's always good to use sealer on anything that might be an issue. Water passages especially and around where there might be a vacuum issue. It's engine building 101. When you pull the intake and see nothing wrong,change the lifters. I'm telling you there was a huge problem with defective lifters flooding the covers and making the engine pull oil in and smoke.
Registered User
Joined: Jul 2009
Posts: 5,186
From: Birmingham,Alabama
I hate to be the bearer of bad news but as you already know,you gotta problem that's got to be fixed. I had a buddy who had the exact same problem you did and he got a set of good used lifters from me,put them in and it fixed his problem.I do not encourage using used lifters but he didn't want to spend the $$$$ for expensive .921 lifters. At the time,NOS was the only choice but now there are good made in the USA .921 lifters available fro HyLift Johnson. I'm not sure about the price of them now but they were very reasonable last time I checked.
Last edited by 66-3X2 442; Nov 1, 2018 at 10:33 AM.
Administrator
Joined: Oct 2009
Posts: 42,454
From: Poteau, Ok
My suggestion was to raise the pcv to create a distance gap for oil to drain back down before being sucked into the valve. I've done it with aftermarket VC's.
Registered User
Joined: Jul 2009
Posts: 5,186
From: Birmingham,Alabama
A leaking manifold gasket will give symptoms of smoking out the tailpipe, but not the oil sucking in the pcv. You can run the engine for a while with the pcv line capped and see if your issue goes away. There would be no indication of oil under the carb as the oil goes direct into the cylinder and usually this problem makes the engine run like caca because of the vacuum leak. You can also take the breather off the other VC and spray a bunch of breaklean in there, if the idle jumps up the gasket is leaking.
My suggestion was to raise the pcv to create a distance gap for oil to drain back down before being sucked into the valve. I've done it with aftermarket VC's.
My suggestion was to raise the pcv to create a distance gap for oil to drain back down before being sucked into the valve. I've done it with aftermarket VC's.
72Cutlass S
Joined: Jul 2011
Posts: 1,201
From: Bakersfield, CA
[QUOTE][/QUOTEWouldn't that result in your face being in the carburetor?
you can perform this with the air cleaner on and yes it does. It also helps to have long arms. Its not like you have to remain in that position for 10 minutes. If there is a problem you should know in 30 seconds or less.
you can perform this with the air cleaner on and yes it does. It also helps to have long arms. Its not like you have to remain in that position for 10 minutes. If there is a problem you should know in 30 seconds or less.
Registered User
Joined: Aug 2012
Posts: 390
From: Research Triangle Park, NC
What is your PVC hose connected to? It looks like a rubber cylinder piece. My PVC hose is connected directly to the PVC valve with a little clamp to keep it tight.
Registered User
Joined: Sep 2010
Posts: 472
Thread
Thread Starter
Forum
Replies
Last Post
