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Serious Blow By |
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DocCreer 
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Joined: Oct/03/2009 Location: Portland Oregon Status: Offline Points: 1568 |
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 Topic: Serious Blow ByPosted: Aug/03/2018 at 4:40pm |
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I have a 196 that runs great but has alot of blow by...then again it hasn't been driven much in the last decade...would a catch can help?
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61 American
82 eagle limited |
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6768rogues
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Joined: Jul/03/2007 Location: United States Status: Offline Points: 6241 |
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Posted: Aug/03/2018 at 6:22pm |
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What would you catch, oil coming out of the road draft tube?
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Content intended for mature audiences. If you experience nausea or diarrhea, stop reading and seek medical attention.
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Fluffy73
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Joined: Nov/21/2007 Location: Castlegar, BC Status: Offline Points: 3059 |
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Posted: Aug/03/2018 at 10:11pm |
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If the cylinders are just glazed, you could try the old Borax down the carb trick. But if it's rings that have lost their tension or excessive wear - stick a fork in it. It's rebuildin' time!
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I am genetically incapable of being Politically Correct.
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farna
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Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19677 |
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Posted: Aug/04/2018 at 11:20pm |
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63 and later 196s used a PCV valve. A catch can might help with one of those. I'd try an engine oil flush (Gunk makes a good one, or use a half quart of ATF and a half quart of diesel fuel). That might free up the rings if they are stuck. If it's been run hot a few times and the rings have lost tension... Fluffy73 said it already.
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Frank Swygert
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FSJunkie
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Posted: Aug/05/2018 at 2:03am |
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A lot of that "blow by" you see may just be water in the oil that is cooking out and turning to steam as it runs. Engines that sit for long periods of time or are driven short distances in humid weather will build up an alarming amount of moisture in the oil that cooks off as the engine gets hot and steams out the crankcase.
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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farna
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Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19677 |
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Posted: Aug/05/2018 at 8:43am |
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Good observation! Also, the 196 is notorious for blown/leaking head gaskets cracked heads. Could be water from that....Torque that head!!!
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Frank Swygert
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amxdreamer
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Posted: Aug/05/2018 at 10:36am |
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What about replacing the PCV? They get gummed up.
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Tony
Vancouver, BC 1970 AMX 1972 Badassador AMO#10333 |
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farna
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Posted: Aug/05/2018 at 4:43pm |
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Good catch! A faulty PCV valve (assuming it's a 63-65 model)can cause blow-by. Check the hose for blockage as well.
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Frank Swygert
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DocCreer
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Posted: Aug/06/2018 at 2:41am |
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What does the pcv look like
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61 American
82 eagle limited |
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farna
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Posted: Aug/06/2018 at 5:53am |
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There is a hose coming from the front side cover (on the lower right side) up around the front of the engine to a fitting just under the carb. Near the carb in the rubber part is a short metal piece. That's the PCV valve. You need an in-line valve that is designed to be mounted sideways. Rock Auto has the correct valve listed.
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Frank Swygert
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