Date: Mon, 22 Mar 1999 18:00:55 -0500 From: "Mike Smith" <kld_msmithnopsamAMearthlink.net> Subject: Re: Explanation of engine 'ping' and 'knock'
I have *heard* (I have never tried it, and am not suggesting that you do) that spraying small amounts of water into the intake when the engine is running may loosen carbon deposits. Can anybody corroborate/debunk this? -- Mike Smith. No, the other one. Chasisaac1 wrote in message <19990318135116.29687.00000143nopsam06.aol.com>... >Okay this leads to another question. What about those gas additives that will >get rid of carbon deposits? WIll this work and do well to the engine? Or do we >more snake oil > >Charles > > >In article <01be70bd$fb1a7ea0$25a84f0cnopsamwarp>, "Jeff" wrote: > >>Ping and knock are the same thing, with ping being a milder form. They >>are caused by premature ignition in the cylinder. This in turn is >>caused by incorrect (too advanced) ignition timing, improper air-fuel >>ratio, or using fuel of too low an octane. A mild ping heard on hard >>acceleration or steep uphill climb generally is considered harmless. >>Continual pinging at constant speed or heavy knocking (you will hear a >>loud noise and ususally feel the engine shudder) are considered bad and >>can cause serious engine damage. Burning of valves and pitting of >>piston tops are possibilities. >
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