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Tool Talk Discussion Forum

OT: Removing Carbon Deposits

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Darren in TN

04-18-2004 20:49:42




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Hey, y'all.

Can anyone give me advice on the best way to remove carbon deposits in a fuel injected engine? This is on a little Mazda four-banger. I've been thinking about trying the old trick I use on carbureted engines and spray a fine mist of water into the throttle body with the engine warm and idling. Anyone tried that on an injected engine, or know a better trick?

Thanks,
Darren

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Revredneck

04-19-2004 05:19:38




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 Re: OT: Removing Carbon Deposits in reply to Darren in TN, 04-18-2004 20:49:42  
Darren,
First of all, remember that my experience is primarily on GM cars and trucks. Your local GM dealer should have a product called Top Engine Cleaner. If your engine has a "sideways" intake, you will want the spray can version, otherwise the regular can will do the job just fine. You warm up the engine and then spray the contents of the can into the intake system just fast enough to keep it from stalling. Then spray the last third or so of the can into it as fast as you can, stalling the engine. Let her sit for about a half hour and then start her up and clear her out. It will make a terrible cloud of stinky smoke, but it will clean your carbon out. If you want to take the time and can get the water into it (maybe a big spray bottle), you can follow up with about a quart of water to rinse it all out. I've done many vehicles this way, and it works very well. Just be sure to have the vehicle outside and warn the neighbors so they don't call the fire dept. on you. Good Luck and God Bless,
Tommy

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DaveCA

04-19-2004 17:58:26




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 Re: Re: OT: Removing Carbon Deposits in reply to Revredneck, 04-19-2004 05:19:38  
Yep thats the stuff. I've heard Castle Hydroblast is the same thing. I have used the GM product for 30 years now on occasion. Plan to stay upwind of the tailpipe.



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