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Occasional stumble while idling

The inside of the throttle body needs to be spotless clean and shiny bright for the car to idle properly. Get yourself some throttle body cleaner and keep at it until the cleaning cloth shows no ...
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Searching for poor burn problem. How to know if valve guides are worn?

If you have a problem with oil getting down the valve guides, it usually isn't the valve guides which are the problem, but the valve stem seals at the top of the cylinder head underneath the valve ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
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Where is the PCV valve on my engine, and how can I check/change it?

It should be located in the driver's side (left) valve cover towards the rear, pointing just about straight up. There should be a hose which is attached to it and plumbed into the intake manifold (...
Pᴀᴜʟsᴛᴇʀ2's user avatar
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Suburban stumbles at idle, unknown tube spewing black liquid into air intake is suspected cause. Please advise?

I don't think you're looking in the right place (at least by your images) for where the PCV is located on your Suburban. It should be located in the driver's side (left) valve cover towards the rear, ...
Pᴀᴜʟsᴛᴇʀ2's user avatar

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