kawaboy13 Posted November 26, 2011 Share Posted November 26, 2011 So when I was greasing my lift, I saw these tears in a hose up by my intake. I'm guessing this is my main intake. Could this be the vac leak that causes my truck to rough idle and die on cold start? I changed my IAC with little change in the idle of my truck. Is this available and easy to change? Next, when I put my lift on, there was no oil leak. I changed my rear main seal, oil pan gasket, and my valve cover gasket in March. However, I look under to snap a few pictures and there it is. Clearly ran out from the front of my pan. Should I try to tightn bolts? I would rather not break the heads. I put the expensive rubber and metal gasket. I know I have blowby but is there enough pressure to leak htrough that gasket? And all of the sudden? Thanks in advance! Quote Link to comment Share on other sites More sharing options...
vaquaro Posted November 26, 2011 Share Posted November 26, 2011 Photo # 1 Warm air duct to air cleaner intake . You should be able to see it from above , running beside the air intake box into a thermo vacuum activated diverterter . The other end attaches to a tin housing on the exhaust manifold . :wrench: Quote Link to comment Share on other sites More sharing options...
cruiser54 Posted November 26, 2011 Share Posted November 26, 2011 That torn hose will not cause any driveability problems or rough idling. It's just there to provide warmer air on cold start-ups. The leak you see is from behind your front crankshaft dampener, aka front timing cover seal. Quote Link to comment Share on other sites More sharing options...
kawaboy13 Posted November 26, 2011 Author Share Posted November 26, 2011 Is this a seal that is hard to get to? Also, its not just the oil pan leaking? And should I replace the hose or not worry about it? Where else should I check for vaccuum leaks? Thanks! Quote Link to comment Share on other sites More sharing options...
cruiser54 Posted November 26, 2011 Share Posted November 26, 2011 That hose IS NOT a vacuum hose. It supplies warm air to the intake when it's really cold outside. Got a flashlight handy? Take a look at the leak in front. Is it coming from above the oil pan? If so, it's the timing cover seal. Replacement requires special tools like a puller. You would be best off having a shop do it if it's needed. Quote Link to comment Share on other sites More sharing options...
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