Inlet Manifold removal

[NZDaz]

TLDR; whats the easiest way remove the inlet manifold for cleaning?

My Terrano has 160K's on the clock so has been around for a wee while.
When blocking the EGR today I figured where the EGR pipe meets the inlet manifold would be the easiest place. When I had it apart I was shocked by the build up of gunk so took the throttle body off for a better look. You can see the build up in the front port but not the rear port, weird huh.
Anyway I have unplugged the cables the dipstick mounts and a few other random connectors and earths but access to the manifold mounting bolts is very restricted. There are what I assume are injector tubes or something which pretty much block access to each of the bolts, can these tubes just get removed without any problems?

Ill update this thread with some decent pics of the manifold when it is removed.
- Didn't want to hijack the EGR thread too much.

[the ferret]

NZ Daz, what motor is it and what year, I may have instruction sheet for EGR plate instal.
Cheers, the ferret.

[YNOT]

NZ Daz, what motor is it and what year, I may have instruction sheet for EGR plate instal.
Cheers, the ferret.

It's a 1999 Nissan Terrano with ZD30 engine.

Tony

[the ferret]

Thanks Tony.
This is the set up for EGR instal on a ZD30 Direct injection.
http://i608.photobucket.com/albums/tt164/ferret/egrblockzd302-1.png
http://i608.photobucket.com/albums/tt164/ferret/ZD20EGR20modified.jpg

[NZDaz]

Thanks for the advice, thats a handy picture. I already blocked it where you have have noted, I was wonder why lots of people where recommending blocking it where it says Plaque when your place is easier.
I have done heaps of reading on this subject in the reference doc and on this and other forums. I have the boost gauge already installed and working (could do with a damper / restrictor but that can come later)

However I haven't found a thread or page on removing the inlet manifold, there is a few with people saying they want to and I saw one thread from YNOT asking for pics from someone if they do.

If someone has done this job I would appreciate it if they could pass on any hints or suggestions, my main concern is the whether I can simply unbolt the injector tubes or not. They are in the way so I guess I have to.

You can see from the pics above that it needs too be done and as I have the use of my flat mates car for the week it is the ideal time to do it.

[YNOT]

I'm hoping Chaz will find this thread soon, I'm sure he has taken his inlet manifold off for cleaning so will know what's involved.
I cleaned mine as far as I could with it still fitted to the engine, not ideal but I'm lazy.

Tony

Edit; and if you think your manifold is bad, you aint seen nothin'!

[NZDaz]

I wonder if that's an indication the motor has been pulled apart or rebuilt before. Doesn't really matter I guess.

[the ferret]

Thank goodness you don't have a Prado!!!
This is what the so called "anti pollution" devices do to an engine from the day you buy it!!
http://i608.photobucket.com/albums/tt164/ferret/7-1-1.jpg

[NZDaz]

Well I got the manifold out, I found it a bit of a prick to do but could have been a lot easier if I had removed the injector tubes from the start!
It seems that you get most of the build up in the throttle bodies rather then the manifold so dont know if it is really worth the effort to remove the manifold.

There is a bit more build up in the head but I am not going there!

Now to clean and reassemble...

[Skull]

Looks allot cleaner than mine at 180k. my 3 and 4 runners were restricted down to about the size of a ten cent piece, 3 especially. I just threw mine in a bucket and submerged it with kero. Couple of days later started to clean the gunk out. Was a mission trying to scrape it all out thought the runners. Was a different truck afterwards though, funnily enough it used more fuel after I got her breathing again.