oil leak

mgm
Posts: 1
Joined: Mon Dec 11, 2017 6:05 pm

oil leak

Unread post by mgm » Tue Dec 12, 2017 9:30 am

I have a 2004 Trailblazer 4.2 I-6, the problem I am having oil is getting into the secondary air injection system. Also, leaking out at the secondary check valve gasket onto the exhaust manifold. I have spoke to alot people and nobody has runn across is problem. Does anyone know what could cause this condition?

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carriedi
Posts: 2573
Joined: Wed Apr 10, 2013 12:42 pm

Re: oil leak

Unread post by carriedi » Fri Dec 15, 2017 5:17 am

system should be just blowing air. Sometimes you can get water through the system. Where is your air intake for the air pump? Or do you have the pulse secondary air injection? could it be water rusted up and leaking out?
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