4.0forlife Posted September 23, 2020 Share Posted September 23, 2020 Ive got an 88 comanche i just h.o swapped. The small vent line in the back of the valve cover that connects to the intake is being used to consume oil. The intake pulls the oil from the valve train. The valve cover seems fine even did cruisers mod to it but it still sucks oil. Any ideas? Link to comment Share on other sites More sharing options...
Ωhm Posted September 23, 2020 Share Posted September 23, 2020 Isn't there a fixed orifice (2.6mm) on that line? Link to comment Share on other sites More sharing options...
4.0forlife Posted September 23, 2020 Author Share Posted September 23, 2020 I'm not sure its the same line from when i got the truck Link to comment Share on other sites More sharing options...
Ωhm Posted September 23, 2020 Share Posted September 23, 2020 3 minutes ago, 4.0forlife said: I'm not sure its the same line from when i got the truck Does valve cover front vent line go to air box? Link to comment Share on other sites More sharing options...
4.0forlife Posted September 23, 2020 Author Share Posted September 23, 2020 Yes Link to comment Share on other sites More sharing options...
omega_rugal Posted September 23, 2020 Share Posted September 23, 2020 get an oil catch can, it doens have to be fancy Link to comment Share on other sites More sharing options...
4.0forlife Posted September 23, 2020 Author Share Posted September 23, 2020 I have one on stand by but i wasnt sure if it would play nice with the vacuum from the intake Link to comment Share on other sites More sharing options...
omega_rugal Posted September 23, 2020 Share Posted September 23, 2020 put it inline with a pcv valve Link to comment Share on other sites More sharing options...
4.0forlife Posted September 23, 2020 Author Share Posted September 23, 2020 But the other ones the one thats transporting oil with the motor running theres a slight vaccum on the pcv side Link to comment Share on other sites More sharing options...
cruiser54 Posted September 24, 2020 Share Posted September 24, 2020 Is that tube clear or partially clogged? Is it shoved down through the grommet too far? $8 will get you a new tube with grommet. The tube from the rear of the valve cover to the intake manifold is part number BK 715-1365 or Dorman 46005 and comes with the valve cover grommet. Link to comment Share on other sites More sharing options...
4.0forlife Posted September 24, 2020 Author Share Posted September 24, 2020 Ok i checked the tube. Its wide open and theres a lip on the end fitting that provents it from going to far in Link to comment Share on other sites More sharing options...
cruiser54 Posted September 25, 2020 Share Posted September 25, 2020 Is it the original by chance? Where is this oil accumulating? Link to comment Share on other sites More sharing options...
4.0forlife Posted September 25, 2020 Author Share Posted September 25, 2020 I believe it to be the original but i stuck a clear piece of hose on the end at the intake and you can watch the oil come through into the intake Link to comment Share on other sites More sharing options...
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