87TR_WE4$$$
New Member
- Joined
- May 7, 2003
- Messages
- 75
Article from GMHTP
'' I've got an '87 Turbo T, and I'm having issues with the PCV valve. Specifically, it sucks a lot of oil.....The only solution I found that works is an oil/air separator in/line with the PCV valve and the vacuum block....why is this happening?.... What should be the right fix.....''
''Eric Schertz of Dynotech performance replies:
The question is somewhat vague, however ther are some things that can be checked to narrow down the potential causes. First, is the crankcase vented properly, i.e., are there breathers in the valve covers? Another thing to do is use a long screwdriver to check under the PCV valve to see if the stock oil valley pan is in place. If not , you'll need a new stock intake manifold gasket. Also make sure you are using a genuine GM PCV valve (part No. CV893C-25095468) If all of these things are OK, the problem could be caused by excessive blow-by past the piston rings. You can check for this by doing a simple leak-down test.''
'' I've got an '87 Turbo T, and I'm having issues with the PCV valve. Specifically, it sucks a lot of oil.....The only solution I found that works is an oil/air separator in/line with the PCV valve and the vacuum block....why is this happening?.... What should be the right fix.....''
''Eric Schertz of Dynotech performance replies:
The question is somewhat vague, however ther are some things that can be checked to narrow down the potential causes. First, is the crankcase vented properly, i.e., are there breathers in the valve covers? Another thing to do is use a long screwdriver to check under the PCV valve to see if the stock oil valley pan is in place. If not , you'll need a new stock intake manifold gasket. Also make sure you are using a genuine GM PCV valve (part No. CV893C-25095468) If all of these things are OK, the problem could be caused by excessive blow-by past the piston rings. You can check for this by doing a simple leak-down test.''