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#3206822 - 12/05/13 12:18 AM Re: Seafoam vs MMO vs Auto-RX [Re: demarpaint]
Aurora09 Offline


Registered: 12/31/11
Posts: 63
Loc: Saint Clair, MI USA
This particular engine does not have an IAC valve. It doesn't have a PCV valve either. My next thing might be to clean or replace the MAP sensor.
_________________________
96 Oldsmobile Aurora, 123,000 miles, Valvoline Next-Gen Maxlife High Mileage Blend w/Purolator Pure-One Oil Filter.

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#3206906 - 12/05/13 05:46 AM Re: Seafoam vs MMO vs Auto-RX [Re: Aurora09]
dave5358 Offline


Registered: 04/25/13
Posts: 669
Loc: North Bend
Originally Posted By: Aurora09
It has 120,000 miles roughly and there is a check engine light on as far as she knows for random engine misfire, Autozone's standard diagnosis. I looked around on the cobalt forums and some people said they resolved the stalling/rough idle issue by replacing the air and fuel filters. I did the air filter, cleaned the throttle body, and did two seafoam inductions spaced about an hour apart. The first being more effective than the second. If the fuel filter doesn't help, that's where I stop. I'm not real concerned with the blow-by, as this engine 2.2 doesn't actually have a PCV valve, just a tube from the valve cover body to the intake side.


You might want to check or replace your front oxygen sensor, if you have one. They don't last forever and, by most reports, actually do contribute to the engine running properly.
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2006 Forester XT
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#3206924 - 12/05/13 06:24 AM Re: Seafoam vs MMO vs Auto-RX [Re: Aurora09]
Trav Offline


Registered: 11/20/06
Posts: 11313
Loc: MA, Mittelfranken.de
Originally Posted By: Aurora09
This particular engine does not have an IAC valve. It doesn't have a PCV valve either. My next thing might be to clean or replace the MAP sensor.


No but it does have a PVC system, it uses a PCV orifice.

Spark plugs oil fouled, oil in cylinders, excessive oil consumption on Malibu, Cobalt, Alero, Grand Am, Pursuit, Saturn L with 2.2 liter engine


Spark plugs oil fouled, oil in cylinders, excessive oil consumption on Malibu, Cobalt, Alero, Grand Am, Pursuit, Saturn L with

GM has issued a technical service bulleting (TSB) #05-06-01-003C for issues relating to excessive oil consumption, spark plug fouling, and oil in cylinder for the vehicles shown below with the Ecotec 2.2L 4-Cylinder Engine (VINs D, F)

2004-2005 Chevrolet Cavalier, Classic, Malibu
2005 Chevrolet Cobalt
2004 Oldsmobile Alero
2004-2005 Pontiac Grand Am, Sunfire
2005 Pontiac Pursuit (Canada Only)
2004-2005 Saturn L-Series, ION, VUE

If you have excessive oil consumption or blue smoke on acceleration and can’t find any external oil leaks, you may have an improperly sized or plugged PCV valve or a problem the oil baffle in the camshaft cover.

GM recommends removing the cover and checking for heat stake marks where the baffle was welded to the cover. If they’re not visible, you must replace the camshaft cover because it is now out of place and blocking proper airflow and oil mist control. The oil fill tube must also be replaced with the cover.

Next, insert the smooth end of a 5/64-in. drill bit into the PCV orifice. If the bit passes through the orifice, replace the intake manifold—the opening is too large. If the opening is clogged, that’s what’s causing your problem.

More info..

http://www.ecotecforum.com/forums/showthread.php?14411-2-2-Ecotec-burning-oil-help-with-isolation
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#3207469 - 12/05/13 03:17 PM Re: Seafoam vs MMO vs Auto-RX [Re: TrevorS]
dave5358 Offline


Registered: 04/25/13
Posts: 669
Loc: North Bend
Originally Posted By: TrevorS
... MMO: Marvel Mystery oil is a mostly pale oil base meaning it's a light 20 visc. oil. The additives as shown in spectroscopy aren't much. That's not to say there isn't anything else there, just doesn't show up in analysis. If you run it as an injector cleaner in an ULSD diesel, expect damage to be done to the engine from sulfurs in the mix. The same sulfurs will be in your gas engine only the combustion process will turn some of it into sulfuric acid. Your oils base (mostly calcium) should handle the extra acids but it's not something I would use on a regular basis. The best injector cleaners and carbon removers are Stoddard Solvent based. This is the base for Techron and BG-44 cleaners. And here's another issue, what about the cats? We already know cat life is short with an engine that burns oil. So you add oil (MMO) to the gas and not expect shorter cat life? Use at your own risk but I'd use some of the proven cleaners/ carbon removers that are cat friendly before trying something that right off says it will damage an expensive piece of emissions equipment.


Per Wikipedia MMO is The product is composed of 74 percent mineral oil, 25 percent stoddard solvent, and 1 percent lard. Or, o-Dichlorobenzene (1,2-Dichlorobenzene (ortho-dichlorobenzene))0 - 5% , Fine White Mineral Oil 70 - 100% , Mineral Spirits 20 - 30%. So it should do a good enough job on injectors.

Recall that it was originally used as UCL - not an oil additive - so it would not have come in contact with lifters.
_________________________
2006 Forester XT
2008 Corolla LE

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#3208143 - 12/06/13 05:56 AM Re: Seafoam vs MMO vs Auto-RX [Re: Aurora09]
sprintman Offline


Registered: 05/27/02
Posts: 11006
Loc: Canberra ACT Australia
Hold off on the Auto-Rx Plus until the new year.

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#3208185 - 12/06/13 07:11 AM Re: Seafoam vs MMO vs Auto-RX [Re: sprintman]
Trav Offline


Registered: 11/20/06
Posts: 11313
Loc: MA, Mittelfranken.de
Originally Posted By: sprintman
Hold off on the Auto-Rx Plus until the new year.


Or just hold off permanently and fix the problem. If this is the problem that seems to be a known with this engine then nothing in a bottle is going to "fix it".
The $28 will probably buy the new intake gasket.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#3209907 - 12/07/13 09:25 PM Re: Seafoam vs MMO vs Auto-RX [Re: ChrisD46]
binkis Offline


Registered: 11/18/13
Posts: 14
Loc: Maryland U.S.A
Lucas green bottle stuff supposed to ail thiss?

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#3209911 - 12/07/13 09:28 PM Re: Seafoam vs MMO vs Auto-RX [Re: TrevorS]
binkis Offline


Registered: 11/18/13
Posts: 14
Loc: Maryland U.S.A
Thank you in all yer knowledge its people like you who help make sense of the additive world

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#3210333 - 12/08/13 11:31 AM Re: Seafoam vs MMO vs Auto-RX [Re: Aurora09]
Aurora09 Offline


Registered: 12/31/11
Posts: 63
Loc: Saint Clair, MI USA
I didn't end up needing to get involved. Her car ended up breaking down and at the mechanic for a different reason. Also, she is trying to get back with her ex boyfriend, so I don't need that mess.
_________________________
96 Oldsmobile Aurora, 123,000 miles, Valvoline Next-Gen Maxlife High Mileage Blend w/Purolator Pure-One Oil Filter.

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