280z Head Disassembly?

[moozieman]

Just now, moozieman said:

 

Posted a couple vids. This is the current status. Had a bit of an inconsistent rumble to it.??‍♂️

[Dave WM]

the white tail pipe smoke is the issue? I thought it was leaking around the manifold?

Take it out and drive it for a while, see if it still has white smoke.

Are you losing antifreeze? is it overheating?

 

 

Edited February 18, 2020 by Dave WM

[moozieman]

1 minute ago, Dave WM said:

the white tail pipe smoke is the issue? I thought it was leaking around the manifold?

Take it out and drive it for a while, see if it still has white smoke.

 

The first video depicts my manifold issue. The second was so you could hear the exhaust. The car isn’t driving. It’s stationary right now. No transmission fluid at the moment. I’m in the process of getting it road ready

[Zed Head]

You posted the same video two times.  High idle, smoky exhaust.  Looks like a cold engine from the condensate/water dripping from the pipe.

Since it's running you should still do what I suggested.  In my opinion.  You can have an exhaust leak without having an intake leak.  And some exhaust leaks seal up when the engine gets hot.

Edit - but with the idle so high it will be hard to diagnose.  You need a warmed up engine.

Edited February 18, 2020 by Zed Head

[moozieman]

4 hours ago, Zed Head said:

You posted the same video two times.  High idle, smoky exhaust.  Looks like a cold engine from the condensate/water dripping from the pipe.

Since it's running you should still do what I suggested.  In my opinion.  You can have an exhaust leak without having an intake leak.  And some exhaust leaks seal up when the engine gets hot.

Edit - but with the idle so high it will be hard to diagnose.  You need a warmed up engine.

Oops! my bad. Heres the correct video....IMG_2100.TRIM.MOV

Edited February 19, 2020 by moozieman

[Zed Head]

Could be an exhaust leak.  things seem kind of wet there though.

Why is the valve cover bolt so far up from the cover?  Those need to be tight or you'll have a leak the cover gasket.

[moozieman]

1 minute ago, Zed Head said:

Could be an exhaust leak.  things seem kind of wet there though.

Why is the valve cover bolt so far up from the cover?  Those need to be tight or you'll have a leak the cover gasket.

When I got the car, I found it crossthreaded. I'm gonna re-tap it. It's just that one bolt.

[Dave WM]

cant get the video to work, but with all that oil from the valve cover leaking down, I could see it smoking off a hot manifold.

[moozieman]

28 minutes ago, Dave WM said:

cant get the video to work, but with all that oil from the valve cover leaking down, I could see it smoking off a hot manifold.

Well then I suppose I might start by getting a new rocker cover gasket and fixing that bolt.

[siteunseen]

I can't figure out all those splatter spots.  Is it oil?  Seems hard to get that where it is unless you've used an air hose or similar to maybe clean?

[Dave WM]

besides leaking oil, you may have an vacuum leak (the pcv assumes an air tight valve cover). a vacuum leak there will cause problems with the EFI system as unmetered air gets sucked into the manifold.

[Dave WM]

if you are looking for things to do, make sure you have good hoses on all the FI stuff and use the correct FI clamps. Get FI rated hose, its a fairly low pressure system as far as FI goes, but why risk it. Also a trip to the local JY will give you a bunch of GOOD FI OE clamps, not those slotted style. You want a good tight no leak FI system, esp on a car this old that likely has leaks if everything has not been replaced already. Carry a good fire extinguisher at all times.