Blaine Posted June 8, 2014 Share Posted June 8, 2014 I have oil coming in to my air filter from the valve cover any thoughts on why Link to comment Share on other sites More sharing options...
Eagle Posted June 8, 2014 Share Posted June 8, 2014 Clogged CCV tube. Link to comment Share on other sites More sharing options...
Blaine Posted June 8, 2014 Author Share Posted June 8, 2014 U have pic of it Link to comment Share on other sites More sharing options...
Blaine Posted June 8, 2014 Author Share Posted June 8, 2014 Found one online thanks for the help Link to comment Share on other sites More sharing options...
Blaine Posted June 8, 2014 Author Share Posted June 8, 2014 Both lines on the valve cover wasn't plugged but the front line leading right to the air box is leaking oil around the insert to the cover Link to comment Share on other sites More sharing options...
91Pioneer Posted June 8, 2014 Share Posted June 8, 2014 Common. What year is your truck? If it's a Renix, see tip #25 here: http://comancheclub.com/topic/36382-cruisers-renix-tips/ Link to comment Share on other sites More sharing options...
Eagle Posted June 8, 2014 Share Posted June 8, 2014 Both lines on the valve cover wasn't plugged but the front line leading right to the air box is leaking oil around the insert to the cover But the front line is an air INLET, allowing filtered air to enter the valve cover. The smaller line at the rear is the suction line that pulls air and contaminants out of the crankcase and sends them to the engine to be burned. The smaller line at the rear can get clogged over time, blocking that path. Blowby then pressurizes the crankcase and forces the oily residue to travel backwards to the air filter to get out. It's often necessary to remove the valve cover and clean out the inlet port as well as to replace the smaller (rear) CCV line to fix the problem. If your engine has a lot of blow-by, it's possible that even a fully functional CCV system won't be able to handle the excess crankcase pressure. Link to comment Share on other sites More sharing options...
Blaine Posted June 9, 2014 Author Share Posted June 9, 2014 Its a 87 base model originally 2x4 Link to comment Share on other sites More sharing options...
91Pioneer Posted June 9, 2014 Share Posted June 9, 2014 Yep you have a Renix. Do the valve cover mod and put a new hard line on the rear, Dorman makes them. Link to comment Share on other sites More sharing options...
Jeep Driver Posted June 9, 2014 Share Posted June 9, 2014 Make sure the vacuum port is not clogged. Image Not Found Link to comment Share on other sites More sharing options...
cruiser54 Posted June 9, 2014 Share Posted June 9, 2014 All of the above. Link to comment Share on other sites More sharing options...
Blaine Posted June 15, 2014 Author Share Posted June 15, 2014 cool thanks will do everyone. Link to comment Share on other sites More sharing options...
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