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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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Old 09-02-2013, 02:02 AM
bharris42 bharris42 is offline
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Will Lacquer thinner really clean my catalytic converter?

Hey guys I'm new to the forum and wanted to ask a couple questions about this method of adding Lacquer thinner to my gas tank to clean my so called clogged catalytic converters. First off, I have a 2006 F150 5.4 with 90k miles on it and my engine light is on. When I took it to autozone, they said it was just a clogged catalytic converter. Well to be sure, I took it to another autozone, and they said it was an oxygen sensor. Has anybody ever tried this? I run a lot of ethanol in my truck. My instincts tell me that the catalytic converters are probably clogged because when I mash on the gas it doesn't accelerate as fast as it should being a V8. Can someone please help me?
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Old 09-02-2013, 10:11 AM
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Lacquer thinner in the fuel might possibly damage some non-metal items, I don't know. There probably is something made for vehicles that would be better. For the future, your best bet is to use a fuel stabilizer made for ethanol fuels all the time - with every fill-up. I use Sta-Bil super concentrate for ethanol fuels (blue) in everything I have that uses gasoline. I've been doing this for about five years and have had no trouble with any vehicle fuel or exhaust systems yet. It definitely keeps the cat converters 'sweet' like a new car.
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Old 09-02-2013, 05:02 PM
P.Bronner P.Bronner is offline
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I second the concern about damage to fuel system components.
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Old 09-02-2013, 05:17 PM
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Clogged converter may mean that the material inside has actually melted and is now a solid piece; not gonna clean that. Also, before doing anything, I'd have a more certain diagnosis done. These trucks have a habit of killing converters, often due to failing fuel injectors that stick open and pour raw fuel which eventually ends up running through the cats. Spend the money to have a reputable mechanic find the ROOT cause of the fault.
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Old 09-02-2013, 07:00 PM
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Quote:
Originally Posted by sandrat View Post
Clogged converter may mean that the material inside has actually melted and is now a solid piece; not gonna clean that.
He also wouldn't be able to drive it.

No offense, but I'm pretty sure there's nothing in the substrate material used in catalytic converters that can melt and create a solid piece.

Stewart
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Old 09-02-2013, 09:04 PM
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Thanks guys, ill have it looked at this week. I have a really good mechanic in mind!
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Old 09-02-2013, 09:33 PM
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Quote:
Originally Posted by Stewart_H View Post
He also wouldn't be able to drive it.

No offense, but I'm pretty sure there's nothing in the substrate material used in catalytic converters that can melt and create a solid piece.

Stewart
Misspoke. Not a complete blockage of the exhaust, but instead of a honeycomb shape, it becomes a solid piece and [I]restricts[I] the exhaust flow, not necessarily seals it. The raw fuel hitting the hot ceramic ignites, and the ceramic melts as a result.
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Old 09-07-2013, 05:18 PM
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I’m not sure of everyone’s interpretation of what a "solid piece" is, but to me this looks solid. This was from my 2004 f150 supercew lariat 4x4.

clogged cat.



new cat.

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Old 09-07-2013, 05:18 PM
 
 
 
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