Petersubaru Posted October 3, 2006 Share Posted October 3, 2006 usually I give people advice on this problem..but I am stumped as to what the real problem is..oil is sitting inside the air filter and the PVC is new and the compression for each cylinder is 159-160psi ...is it possible that the oil control rings are not doing there job...oil consumption is about 1qt.@ 1300 miles when driving at highway speed...is there a method as to tell if there is to much back-pressure Quote Link to comment Share on other sites More sharing options...
NorthWet Posted October 3, 2006 Share Posted October 3, 2006 Oil rings control how much oil makes it into the combustion chamber, not how much oil gets pushed around by blow-by(compression rings) or by the engine's case "breathing". You said that you had replaced the PCV... I assume that you mean the PCV valve inself? Did you remove both cam-/valve-over breather tubes and check for build-up narrowing the hoses or the metal nipples that they fit over? Quote Link to comment Share on other sites More sharing options...
Bucky92 Posted October 3, 2006 Share Posted October 3, 2006 Sounds like you have a clogged breather tube like NorthWet says..I had the same thing on my 88 GL..new PVC etc..was so bad I would take a turn and the car would just shut off from the oil dumping into the SPFI. I put new breather tubes on like a friend told me ( this was even after I took the car to a dealer and they couldnt figure it out..smart dealer huh?) and the problem was fixed Quote Link to comment Share on other sites More sharing options...
Petersubaru Posted October 4, 2006 Author Share Posted October 4, 2006 I did mean a new PVC valve itself...and the pipes are clean with no blockage Oil rings control how much oil makes it into the combustion chamber, not how much oil gets pushed around by blow-by(compression rings) or by the engine's case "breathing". You said that you had replaced the PCV... I assume that you mean the PCV valve inself? Did you remove both cam-/valve-over breather tubes and check for build-up narrowing the hoses or the metal nipples that they fit over? Quote Link to comment Share on other sites More sharing options...
Petersubaru Posted October 4, 2006 Author Share Posted October 4, 2006 I will double check again the breather tubes etc .. Sounds like you have a clogged breather tube like NorthWet says..I had the same thing on my 88 GL..new PVC etc..was so bad I would take a turn and the car would just shut off from the oil dumping into the SPFI. I put new breather tubes on like a friend told me ( this was even after I took the car to a dealer and they couldnt figure it out..smart dealer huh?) and the problem was fixed Quote Link to comment Share on other sites More sharing options...
mikeshoup Posted October 4, 2006 Share Posted October 4, 2006 Check the breathers on the valve covers themselves. They usually get quite clogged up. Quote Link to comment Share on other sites More sharing options...
ezapar Posted October 4, 2006 Share Posted October 4, 2006 The only time that ever happened to me was when I left the oil cap off after adding some to my 85 GL. Drove it 60 miles after that, it was super messy. Maybe your cap isn't sealing well. . . Quote Link to comment Share on other sites More sharing options...
Petersubaru Posted October 5, 2006 Author Share Posted October 5, 2006 My oil cap is very tightly on and all the breather tubes flow air thru them easily...maybe the new PVC is defected..I will check tomorrow... The only time that ever happened to me was when I left the oil cap off after adding some to my 85 GL. Drove it 60 miles after that, it was super messy. Maybe your cap isn't sealing well. . . Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 5, 2006 Share Posted October 5, 2006 Did you replace the foam PCV filter element inside the air filter housing? They are real cheap from the dealer, and you need the REPLACE it. I've never had any luck cleaning them unfortunately. GD Quote Link to comment Share on other sites More sharing options...
Petersubaru Posted October 5, 2006 Author Share Posted October 5, 2006 it is a clean element in there... Did you replace the foam PCV filter element inside the air filter housing? They are real cheap from the dealer, and you need the REPLACE it. I've never had any luck cleaning them unfortunately. GD Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 5, 2006 Share Posted October 5, 2006 Clean air filter or clean PCV filter? They are two different filters. GD Quote Link to comment Share on other sites More sharing options...
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