Carbon build - up its everyone’s problem.

[irwazza]

+1 for PDF

[big_bob_thefirst]

Great post! Don't know if I'll tackle doing that job just yet!!

[snowman]

definitely post in it's own thread. nice work mate.

[Cowboy Dave]

We'll try and do up a PDF as we did with the cv change document.

May take a week or two (or more....)

[mad992]

Mate that may well be the post of the year. Did you prepare it in word or something first? If so maybe we can turn it into a PDF and host it somewhere in its own thread. Would be well worth printing out for anyone about to tackle the task and the formatting might work better from a PDF than it will from the forum.

ERA your a bloody champion this gets the prize for post of the year 100%
good work and thanks for your effort mate

[NowForThe5th]

After nearly 30 pages I actually lowered myself to read a few posts in here, thought I needed a giggle because the thread is actually incorrectly titled. See, some of us don't have this problem, never had this problem and never will. But, that's another story...

Era, just wanted to say what a great post. Well done and should help everyone who wants to tackle this job.

[irwazza]

After nearly 30 pages I actually lowered myself to read a few posts in here, thought I needed a giggle because the thread is actually incorrectly titled. See, some of us don't have this problem, never had this problem and never will. But, that's another story...

Era, just wanted to say what a great post. Well done and should help everyone who wants to tackle this job.

I hope you touched wood

[Cowboy Dave]

He has a petrol engine mate, those blokes never get wood.

[Era2003]

Thanks all for the thumbs up. Although its a dirty job and thank god you only need to do it once for mine anyway it's not that difficult. Just removing the fuel injection system was a bit of a pain but it was one of those jobs that when you start from the top you can see exactly what needs to be removed as you work down. As I said take some pics just in case to see how it all goes back if you don't remember. One thing though i dont see how the newer inlet manifolds would stop this in the long run. Mitsi and others i reckon have something to answer for. Thats just my opinion though. Well I'm off to Bali in a couple of days so I'll be offline for a week and a half. I'll check when I get back if any one has any questions.
Cheers ERA

[Era2003]

Hey Cowboy did you get my email and attachment for the PDF? I still owe you some more pics.

[Cowboy Dave]

Yeah mate, all good.

[curepipe]

Are we saying the petrols don't have carbon buildup

Well run a can of Subaru upper engine cleaner in yr petrol n see how much white smoke comes out

The thing is petrols just chew more fuel when you have carbon buildup on valves n pistons valves don't close properly so therefore lower compression

Diesels just die altogether lol

[viking shippy]

Great work era
Now for the guys who question the mod of blocking of the egr and catch can LOOK at the photos above yuck!,

[Era2003]

Had I have had the can mod ready to go I would have put it on immediately when I did the repair. I'm going to get the can, etc and stick it on within the next couple of weeks. The stupid thing about this was that the engine specialist I took the car to initially didn't have clue and actually said to me that anything over 200,000k's were what he called "free miles". . You got to be kidding I told him if these diesels are looked after they will last well over 400,000 kms. They dont just die in the spot. he steered me of to go and see a common rail specialist who wanted to change all the injectors out at $800 each . I then spent the night researching the internet and came across this site and this post that hicko started. Seriously had i not come across this site I would be out more than $5,000 by now instead of the $50 it ended up costing me. A mate of mine had an old land cruiser diesel that went for over 500,000 when it was sold and still going strong. It was constantly serviced though and the oil changed every 5,000 kms. Diesels do go on forever.

[NowForThe5th]

Are we saying the petrols don't have carbon buildup

Not in the intake manifold.

Well run a can of Subaru upper engine cleaner in yr petrol n see how much white smoke comes out

Last time I looked carbon was black, not white.

The thing is petrols just chew more fuel when you have carbon buildup on valves n pistons valves don't close properly so therefore lower compression

Carbon build up in the combustion chamber is primarily the result of improper air:fuel ratios. Modern engines manage this by computer so it is relatively unusual to see an excessive carbon build up unless the result of some other fault. The issue under discussion in this thread is carbon build up in the intake manifold. You are attempting to confute my statement that I don't have this problem by conflating two separate issues, neither of which is even vaguely related to the other. My statement stands as correct.

Diesels just die altogether lol

No they don't. Diesels, just like petrol motors, are capable of extremely long service lives with proper maintenance. The issue of excessive carbon build up in intake manifolds is not restricted to Mitsubishi and is the means by which manufacturers meet ever more stringent emissions regulations. While catch cans, EGR blanks and various other modifications may control the carbon build up they also adversely affect the emissions produced by the engine, possibly rendering it illegal. As long as this technology is used, having to clean intake manifolds will remain a part of "proper maintenance".

[snowman]

CONFUTE.

Shit Chris you made me Google again.......

[gauci204]

Well run a can of Subaru upper engine cleaner in yr petrol n see how much white smoke comes out

Last time I looked carbon was black, not white.

Whilst I agree with your whole post, even the big words, if you went by the above theory, why when you do burnouts with black tyres on black bitumen do you get white smoke?

[Cowboy Dave]

CONFUTE.

Shit Chris you made me Google again.......

Did he confund you?

[NowForThe5th]

Whilst I agree with your whole post, even the big words, if you went by the above theory, why when you do burnouts with black tyres on black bitumen do you get white smoke?

Because carbon is only a part of the compound that makes up a tyre. The heating, by friction, results in other parts of the compound being separated as smoke which is white/grey. The carbon itself doesn't actually burn during a burnout. However, when you actually incinerate a tyre the smoke produced is black.

The professor is tired. Can we get back on topic now?

[big_bob_thefirst]

I agree. In the movie black hawk down, they burnt tires and the smoke was black...

[Era2003]

Easy solution to this. As mentioned the engine management systems monitors air fuel mixture, when it gets fouled up etc through various air fuels sensor not working the air fuel mixture is enriched to a point where combustion is no longer possible or really badly afftected (thats what I hadin my triton). Remember you need both air and fuel to create fire So when the carbon builds up in the engine most of it stays there and never gets out, lodged on to the walls of everything it touches. The white/ blue smoke that people see here in diesels is the engine burning the excessive amounts of diesel, my fuel consumption went up from 9.5l/100 to 11L/100 in a matter of a month, hence the white smoke (it actualy has very little carbon in it). Another analogy is if you look into a furnace buring wood. Once the wood is well burnt all you have left is carbon and if you look outside at the chimney what do you see (no black smoke) true carbon actually burns very clean.

Cheers
ERA

[curepipe]

The Subaru spray like sea foam combines with the carbon buildup and burns white. Although ecu manages combustion process there are many factors the affect air fuel ratio dirty filter. Dirty fuel ect injector gumming ect.

Ive run Subaru sprays in cars after the clean had to readjust valves due to the removal of the carbon deposits coming off the valves they have been adjusted the past with carbon present


Try a can of the spray and tell me the results you will be amazed


To give you a idea a customer came to see me car had very low compression and would not go above 2000 rpm in gear

Sprayed one can through the system clean the carbon customer went home
And car is still running fine after 2 years

Carbon buildup takes longer in petrol cars and doesn't affect the inlet manifold but affects valves and rings

[curepipe]

In diesels white smoke too much air not enough fuel lean mixture

black smoke is too much fuel not enough air rich mixture

[curepipe]

Anyway i have 2 manifolds

One i keep in the garage ready to go
The other on The car

So when gets dirty i do the swap
Clean the other seal it and wait hahahaha

I just need an automated way of swapping it lol

[hvac guy]

White smoke in a diesel is un burnt fuel that has not reached flash point

A lean diesel has no smoke at all.