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Cleaning my intake? #3079323
07/28/13 09:39 PM
07/28/13 09:39 PM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3079327
07/28/13 09:41 PM
07/28/13 09:41 PM
Joined: Oct 2005
Posts: 2,310
Baltimore, MD
racer12306 Offline
racer12306  Offline
Joined: Oct 2005
Posts: 2,310
Baltimore, MD
Metal or plastic intake manifold?


16 Ford Focus/2.0/6A
04 Dodge Neon SXT/2.0/MTX
12 Chrysler T&C/3.6/6A
Re: Cleaning my intake? [Re: Staleembrace] #3079336
07/28/13 09:51 PM
07/28/13 09:51 PM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3079337
07/28/13 09:53 PM
07/28/13 09:53 PM
Joined: Jul 2011
Posts: 416
Martinsburg West Virginia
71Chevyguy Offline
71Chevyguy  Offline
Joined: Jul 2011
Posts: 416
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.


15 Chevy Sonic RS M1 Dexos1 / Delco filter
99 VW Beetle TDI M1TDT / Mann filter
98 Buick LeSabre PHM + G oil / Bosch filter
85 Skylark 2.5
71 Nova 250
Re: Cleaning my intake? [Re: Staleembrace] #3079338
07/28/13 09:54 PM
07/28/13 09:54 PM
Joined: Mar 2012
Posts: 3,492
NJ, USA
yonyon Offline
yonyon  Offline
Joined: Mar 2012
Posts: 3,492
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.

Re: Cleaning my intake? [Re: Staleembrace] #3079340
07/28/13 09:58 PM
07/28/13 09:58 PM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3079355
07/28/13 10:11 PM
07/28/13 10:11 PM
Joined: Feb 2012
Posts: 318
Wi
wally6934 Offline
wally6934  Offline
Joined: Feb 2012
Posts: 318
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.

Re: Cleaning my intake? [Re: Staleembrace] #3079360
07/28/13 10:17 PM
07/28/13 10:17 PM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3079361
07/28/13 10:17 PM
07/28/13 10:17 PM
Joined: Feb 2013
Posts: 190
GA
jfking106 Offline
jfking106  Offline
Joined: Feb 2013
Posts: 190
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

Re: Cleaning my intake? [Re: Staleembrace] #3079420
07/28/13 11:32 PM
07/28/13 11:32 PM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3079424
07/28/13 11:41 PM
07/28/13 11:41 PM
Joined: Mar 2012
Posts: 3,492
NJ, USA
yonyon Offline
yonyon  Offline
Joined: Mar 2012
Posts: 3,492
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.

Re: Cleaning my intake? [Re: Staleembrace] #3079457
07/29/13 01:03 AM
07/29/13 01:03 AM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3079462
07/29/13 01:27 AM
07/29/13 01:27 AM
Joined: Feb 2012
Posts: 318
Wi
wally6934 Offline
wally6934  Offline
Joined: Feb 2012
Posts: 318
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.

Re: Cleaning my intake? [Re: Staleembrace] #3079555
07/29/13 07:28 AM
07/29/13 07:28 AM
Joined: Oct 2004
Posts: 3,749
Michigan
dwcopple Offline
dwcopple  Offline
Joined: Oct 2004
Posts: 3,749
Michigan
Originally Posted By: Staleembrace
See I'm a bong to dump this car
???


2017 RAM Big Horn 4x4 3.6L V6
2011 Chrysler 200 Limited 3.6L V6
Re: Cleaning my intake? [Re: Staleembrace] #3079610
07/29/13 08:31 AM
07/29/13 08:31 AM
Joined: Feb 2013
Posts: 190
GA
jfking106 Offline
jfking106  Offline
Joined: Feb 2013
Posts: 190
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.

Re: Cleaning my intake? [Re: Staleembrace] #3080163
07/29/13 06:11 PM
07/29/13 06:11 PM
Joined: Jul 2013
Posts: 12
Mississippi
Staleembrace Offline OP
Staleembrace  Offline OP
Joined: Jul 2013
Posts: 12
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
Re: Cleaning my intake? [Re: Staleembrace] #3102664
08/22/13 03:06 PM
08/22/13 03:06 PM
Joined: Jul 2013
Posts: 170
Southeastern, USA
camelCase Offline
camelCase  Offline
Joined: Jul 2013
Posts: 170
Southeastern, USA
Look for a orange scented cleaner. These use D-Limolene as their base solvent and will absolutely DESTROY any carbon/varnish deposits.

Re: Cleaning my intake? [Re: Staleembrace] #3265055
01/30/14 05:51 PM
01/30/14 05:51 PM
Joined: Jan 2014
Posts: 450
Australia
Spetz Offline
Spetz  Offline
Joined: Jan 2014
Posts: 450
Australia
Would there be any real benefit of cleaning an intake manifold?
Either measurable in any way, or perceived?


2003 Mitsubishi Diamante 6G74 3.5L. 5 Speed auto. 155,000 miles. Shell Helix Ultra 5W40 at 6k OCI
Re: Cleaning my intake? [Re: Spetz] #3265123
01/30/14 06:56 PM
01/30/14 06:56 PM
Joined: Nov 2010
Posts: 9,783
Saskatoon canada
Clevy Offline
Clevy  Offline
Joined: Nov 2010
Posts: 9,783
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.


2006 Charger RT
Miles x 2 per oil filter
Re: Cleaning my intake? [Re: Staleembrace] #3299943
03/03/14 09:14 AM
03/03/14 09:14 AM
Joined: May 2008
Posts: 601
sweden
ac_tc Offline
ac_tc  Offline
Joined: May 2008
Posts: 601
sweden
Mopar Combustion Chamber Cleaner
Google it


-98 Dodge Durango 5.9 4*4 HDEO 10w- 40 ci4
-04 PT Cruser GT 10w- 40 HDEO ci4
-Everything else HDEO 10w- 40 ci4/STOU 10w-30/THF
Re: Cleaning my intake? [Re: Staleembrace] #3340140
04/11/14 07:47 PM
04/11/14 07:47 PM
Joined: Mar 2009
Posts: 2,639
Cedarbrae, Ontario
xxch4osxx Offline
xxch4osxx  Offline
Joined: Mar 2009
Posts: 2,639
Cedarbrae, Ontario
Amsoil Power Foam works wonders on those deposits.


2015 RAM SXT Crew Cab 5.7 with 6 speed tranny.

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

Re: Cleaning my intake? [Re: Staleembrace] #3347530
04/19/14 04:54 PM
04/19/14 04:54 PM
Joined: Sep 2004
Posts: 7,608
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,608
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?


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

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

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
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