Where is a good source of vacuum on a LQ4 motor?
07-28-2008 | 06:55 PM
#1
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From: Montgomery, AL
Where is a good source of vacuum on a LQ4 motor?
I was going to Seafoam my truck and went to disconnect the vacuum line off the master cylinder and guess what....no vacuum line there. So I just bought the truck and haven't really been able to mess with it with work and all so I haven't spent much time looking honestly. What would be the best vacuum source under the hood to pour the Seafoam in the clean the vacuum system? Thanks
07-28-2008 | 07:40 PM
#3
Your truck must have hydroboost instead of vacuum booster.
There should be a PCV line that goes from the back of the driver's side valve cover into the manifold somewhere (I think it's on the very top). Try that one instead.
There should be a PCV line that goes from the back of the driver's side valve cover into the manifold somewhere (I think it's on the very top). Try that one instead.
07-28-2008 | 07:54 PM
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From: Montgomery, AL
Thanks, yeah the truck does have Hydroboost so the brake booster wouldn't work. Thanks for the valve cover line tip, I wasn't sure it was would be enough of a source of vacuum.
07-28-2008 | 11:47 PM
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