Cleaning intake manifold on NT?

[birdd]

I'm thinking I should look at my intake manifold and clean it up, I haven't cleaned it since I bought the vehicle at 120000kms and it's done 170000 now, I also have no idea if its ever been cleaned before (I somehow doubt it).

Will cleaning my intake manifold improve my fuel economy? (if it's carboned up which I highly think it will be! - based on the fact that the best fuel economy I can get is about 10.8L/100k on the highway...)

Is it a hard job to do? Is it something you can do yourself or do you need specialised equipment?

Do you need to replace the gasket or can you re-use the old one if you don't damage it?

I'd like to clean the intake manifold and then install the resistor mod to disable the EGR valve.

[Paj People 2009]

Hi,

It takes a while. Yes, they need a special unit to clean it properly and mine was a day and a half. Don't just get the spray!

Couldn't really notice too much difference in fuel econ or performance, but good to know it won't clog up in the future.

Got a Catch Can installed and the SPV Mod. Probably only need the SPV Mod after the clean though. I had the C/C installed first at the time of the clean. HAd ours done at 60,000km and it was pretty dirty.

Cheers,
Sally

[Skexis]

What was the all up cost of the clean?

[green troll]

I did mine with two can of liquid Molly and some degreaser. Took half a day to clean. Pretty easy. Just time consuming

[birdd]

I did mine with two can of liquid Molly and some degreaser. Took half a day to clean. Pretty easy. Just time consuming

Over 12 months later and now a bit over 190,000kms I still haven't had a chance to do it.

I am looking at getting a couple of my mechanically minded cousins and my dad to help me over the Christmas break.

So what do I need to do this? It sounds like I just clean and reuse the gasket? It also sounds like acetone might be the way to go, how much would I need?

Are there any guides on how to do this?

[green troll]

There’s a guide for I think the triton engine I used. Pretty similar. Only special tools needed are ratchet wrenches. As I think there’s one bolt at the back on a flange that’s hard to get a socket on. I reused metal gaskets and got new rocker gasket.

The liquid molly stuff destroys the gunk easier then anything I found but is $$$.

Just take ur time. It’s just a few nuts and bolts the hard part is not forgetting something. LOL. Also just be gentle on the fuel rail lines etc.

[littleriver]

Over 12 months later and now a bit over 190,000kms I still haven't had a chance to do it.

I am looking at getting a couple of my mechanically minded cousins and my dad to help me over the Christmas break.

So what do I need to do this? It sounds like I just clean and reuse the gasket? It also sounds like acetone might be the way to go, how much would I need?

Are there any guides on how to do this?

what's your fuel economy like now ?

...

[birdd]

There’s a guide for I think the triton engine I used. Pretty similar. Only special tools needed are ratchet wrenches. As I think there’s one bolt at the back on a flange that’s hard to get a socket on. I reused metal gaskets and got new rocker gasket.

The liquid molly stuff destroys the gunk easier then anything I found but is $$$.

Just take ur time. It’s just a few nuts and bolts the hard part is not forgetting something. LOL. Also just be gentle on the fuel rail lines etc.

Do you know where the guide is?

what's your fuel economy like now ?

...

It hasn't changed that I have noticed, still around the high 10's on the highway and around the 12-13 around town.

[ticky]

Im also planning to do mine over the christmas break. My wife has a couple of weeks off so having my car out of action for a few days wont be a problem..

There is a really good thread on here somewhere that gives step by step instructions to do this job.

I have plenty of tools, and I plan on adjusting the tappets during this job as well. The only real problem I can foresee is that my plans don't always coincide with reality. I have made a similar plan in the past, but I still haven't done it.

Maybe this time.


Steve

[green troll]

I’ll look for the guide. From
Memory I just googled it and found something. Good idea to do tappets at the same time.

[green troll]

Can’t post it but can email if u want. Send me a pm. Or google
How to remove ML triton manifold for cleaning.