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#3079323 - 07/28/13 09:39 PM Cleaning my intake?
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
Well I've got the throttle body off and the intake manifold off and I'm down to the gaskets. My intake has some black buildup and I'd like to remove this easily without a trip to the store again. After using a can of brake cleaner I had zero luck. It's pretty thick residue. Any tips?
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3079327 - 07/28/13 09:41 PM Re: Cleaning my intake? [Re: Staleembrace]
racer12306 Offline


Registered: 10/06/05
Posts: 2302
Loc: Baltimore, MD
Metal or plastic intake manifold?
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04 Dodge Neon SXT/2.0/MTX/MaxLife 5w30/Fram Ultra/7500

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#3079336 - 07/28/13 09:51 PM Re: Cleaning my intake? [Re: Staleembrace]
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
It's metal. Here's what I'm trying to get clean.

Ps don't mind the rip in the gasket. Was an accident and a new one is going on tomorrow.

http://i.imgur.com/YcKqGCY.jpg

http://i.imgur.com/jArXfR5.jpg

I'm not too concerned with the external cleanliness as much as the interior. It looked baked inside there.
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3079337 - 07/28/13 09:53 PM Re: Cleaning my intake? [Re: Staleembrace]
71Chevyguy Offline


Registered: 07/10/11
Posts: 414
Loc: Martinsburg West Virginia
I was cleaning my TDI intake (aluminum) with brake cleaner and I was really surprised that it barely cleaned anything. I then switched to the Valvoline brand Throttle body cleaner and it almost instantly dissolved right down to the shiny metal. Not saying this is the best stuff, I just bought that one since it happened to be on sale. As well as it worked, the next time I think I will be buying it again regardless of price.
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#3079338 - 07/28/13 09:54 PM Re: Cleaning my intake? [Re: Staleembrace]
yonyon Offline


Registered: 03/06/12
Posts: 3492
Loc: NJ, USA
If it's a metal intake use a rag soaked with your cleaning solvent of choice or a brush, then spray to get rid of any loose fibers. Then again, it it's metal it might also be a rough casting. If so, you might be better off leaving that carbon in there to give a smoother surface and slightly better flow.

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#3079340 - 07/28/13 09:58 PM Re: Cleaning my intake? [Re: Staleembrace]
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
It's rough casting externally but I'm pretty sure it's a smooth finish inside underneath the gunk. Somehow my throttle body is near spotless yet my intake looks like its loaded with tar lol. Is there any soak I can do to it overnight to just spray it down with a hose in the morning? There's a tiny o ring on top that's already kinda iffy that I'd rather not harm though. I don't plan to own the car but for another 3 months or so. If its not an issue ill just leave it alone.
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3079355 - 07/28/13 10:11 PM Re: Cleaning my intake? [Re: Staleembrace]
wally6934 Offline


Registered: 02/18/12
Posts: 318
Loc: Wi
A picture of a black hole does not help much. My plenum had a very dark black film on it and i just left it, i think it is the oil streak from the PCV valve.

Now if it is a thick layer of crud that is different.

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#3079360 - 07/28/13 10:17 PM Re: Cleaning my intake? [Re: Staleembrace]
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
Ill get another pic after I'm done watching dexter. Sorry it's tough in pitch dark in the country with an iPhone lol
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3079361 - 07/28/13 10:17 PM Re: Cleaning my intake? [Re: Staleembrace]
jfking106 Offline


Registered: 02/15/13
Posts: 190
Loc: GA
http://www.lastotallyawesome.com/html/Products_Degreaser.html

$1 for the spray bottle, $3 for the big bottle at Dollar General. Buy a plastic tub you can submerge it in if you don't have one, soak it for 30 minutes in 50/50 cleaner and water. Rinse if off, then clean what's left with straight cleaner and a tooth brush.

Check out my thread in the solvent forum:

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2949569#Post2949569

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#3079420 - 07/28/13 11:32 PM Re: Cleaning my intake? [Re: Staleembrace]
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
http://i.imgur.com/fY0M4eY.jpg

That's a better shot of the inside. I don't think it's considered too bad but I don't like it. I'm planning to get rid of the car in like 3 months anyways so if its not an issue ill just skip it. Would any other cleaner work in place of the LA's totally awesome?
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3079424 - 07/28/13 11:41 PM Re: Cleaning my intake? [Re: Staleembrace]
yonyon Offline


Registered: 03/06/12
Posts: 3492
Loc: NJ, USA
Rough cast. That buildup isn't doing anything to hurt your cross-sectional area but might be smoothing the surface out ever so slightly. If you want to do some cleanup to that intake that might actually do something look at port matching and/or polishing. That means taking off some metal and will be more work than is justified if you're only going to have it for a few months.

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#3079457 - 07/29/13 01:03 AM Re: Cleaning my intake? [Re: Staleembrace]
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
Thanks for that tip. I know what port polishing is but I didn't know if this would cause any harm or not. See I'm a bong to dump this car and upgrade to something newer. I've had my eye on an 86 Monte Carlo as well however. I think it'd look great with a 468 dropped in haha! Anyways thanks for the help! Ill get her volte back up tomorrow afternoon and back running again. Much appreciated!
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3079462 - 07/29/13 01:27 AM Re: Cleaning my intake? [Re: Staleembrace]
wally6934 Offline


Registered: 02/18/12
Posts: 318
Loc: Wi
Good 2nd pic! I would not fool with it. That is nothing more than a oil streak. Cleaning it off will do nothing for you.

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#3079555 - 07/29/13 07:28 AM Re: Cleaning my intake? [Re: Staleembrace]
dwcopple Offline


Registered: 10/11/04
Posts: 3747
Loc: Michigan
Originally Posted By: Staleembrace
See I'm a bong to dump this car
???
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#3079610 - 07/29/13 08:31 AM Re: Cleaning my intake? [Re: Staleembrace]
jfking106 Offline


Registered: 02/15/13
Posts: 190
Loc: GA
Originally Posted By: Staleembrace
http://i.imgur.com/fY0M4eY.jpg

That's a better shot of the inside. I don't think it's considered too bad but I don't like it. I'm planning to get rid of the car in like 3 months anyways so if its not an issue ill just skip it. Would any other cleaner work in place of the LA's totally awesome?


Simple Green is popular, and easily available at Walmart. I hear it will stain (darken) aluminum, though.

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#3080163 - 07/29/13 06:11 PM Re: Cleaning my intake? [Re: Staleembrace]
Staleembrace Offline


Registered: 07/27/13
Posts: 12
Loc: Mississippi
Lol autocorrect did me wrong I suppose. Meant about not a bong lmao
_________________________
1995 Chevrolet Monte Carlo Z34 Coupe with 3.4L DOHC VIN code X

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#3102664 - 08/22/13 03:06 PM Re: Cleaning my intake? [Re: Staleembrace]
camelCase Offline


Registered: 07/11/13
Posts: 170
Loc: Southeastern, USA
Look for a orange scented cleaner. These use D-Limolene as their base solvent and will absolutely DESTROY any carbon/varnish deposits.

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#3265055 - 01/30/14 04:51 PM Re: Cleaning my intake? [Re: Staleembrace]
Spetz Offline


Registered: 01/23/14
Posts: 382
Loc: Australia
Would there be any real benefit of cleaning an intake manifold?
Either measurable in any way, or perceived?
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2003 Mitsubishi Diamante 6G74 3.5L. 5 Speed auto. 150,000 miles. Shell Helix Ultra 5W40 at 6k OCI

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#3265123 - 01/30/14 05:56 PM Re: Cleaning my intake? [Re: Spetz]
Clevy Offline


Registered: 11/11/10
Posts: 9783
Loc: Saskatoon canada
Originally Posted By: Spetz
Would there be any real benefit of cleaning an intake manifold?
Either measurable in any way, or perceived?


Valve deposits removed creating a more complete seal potentially I proving compression.
And sucking it in through a couple different vacuum lines seems to help the engine feel more responsive with light throttle inputs.


OP. If those deposits are from the oil mist and combustion gasses that got by the rings then try using mmo or a 2 stroke oil.
My grandpa always said "like dissolves like" which can be translated as 2 similar based things will mix,meaning the cooked oil vapour should get soft and come loose if you add oil to it.
Try soaking a shop rag with 2 stroke oil or mmo and left it sit on top of the deposits overnight.
I had hard carbon deposits on the old pistons from my Harley and they were sitting on my table in my shop.
I accidentally spilled either mmo or 2 stroke oil and some of it got on the carbon encrusted pistons.
I went into my shop a few days later and saw the piston that got spilled on the carbon looked kinda soft,and I wiped the piston clean ONLY where the oil got spilled,the rest of the piston was still hard crusted carbon.
So on one piston I coated the entire top with mmo,the other one with 2 stroke oil and left them sit. The next evening I go to check them out and on both pistons the deposits came off however the mmo one was much softer and easier to clean. The 2 stroke oil one was a bit harder to clean off.
So I know these products will clean up hard,baked on,cooked deposits if given time to absorb into the affected area.
After seeing what they did to the insane build up on my Harley's stock pistons I began using mmo in the same fashion as seafoam,administering through a vacuum line trying to saturate all the deposits possible.
With mmo I stall the engine pouring it in as fast as it will accept it then once stalled let it sit for 20 mins to a half hour then take it out and drive spiritedly.
I think the best way is overnight though.
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2006 Charger RT
Miles x 2 per oil filter

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#3299943 - 03/03/14 08:14 AM Re: Cleaning my intake? [Re: Staleembrace]
ac_tc Offline


Registered: 05/06/08
Posts: 601
Loc: sweden
Mopar Combustion Chamber Cleaner
Google it
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-98 Dodge Durango 5.9 4*4 HDEO 10w- 40 ci4
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#3340140 - 04/11/14 07:47 PM Re: Cleaning my intake? [Re: Staleembrace]
xxch4osxx Offline


Registered: 03/11/09
Posts: 2533
Loc: Cedarbrae, Ontario
Amsoil Power Foam works wonders on those deposits.
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2015 RAM SXT Crew Cab 5.7 with 6 speed tranny.

2008 Mazda 3 GS Sport Hatchback 5sp MT (Girlfriend's car)


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#3347530 - 04/19/14 04:54 PM Re: Cleaning my intake? [Re: Staleembrace]
andyd Online   content


Registered: 09/25/04
Posts: 6867
Loc: Marshfield , MA
Heh heh Thanks Clevy, MMO is 1/4th the price of Seafoam and smells better too. I wonder if Demarpaint has used it in this fashion?
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'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline bulk 0w20 and ? filter

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