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Pinging, knocking and detonation are all terms for a condition known as "pre-ignition,". That means some of the gas and air mixture is igniting in the cylinder before it's supposed to. And when that extra flame front crashes into the normal flame front (created by the spark plug), you hear a noise, and that noise is pinging. Pinging is something you want to avoid if possible. Engine damage can occur if pinging is severe. Pinging is caused by using too low an octane fuel. Use what is recommended in your owners manual. An engine out of time will also ping, so have the timing checked. Carbon buildup will also cause pinging. A product called Seafoam injected through the intake as outlined in the instructions on the can will help remove carbon and stop pinging. A defective EGR valve is another cause, and also overheating. So replace the thermostat and flush the cooling system.
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What would cause brake lights in a 2005 trail blazer to only work in park?
more than likely some of the wires are loose
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There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
What would cause a knocking sound under the hood on a 2004 Chevy trail blazer when the Ac is turned on?
The ac compressor is shot. Usually what your hearing is a bearing that is moving around.
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i am having the same problem with my LTZ 02
How long would a 2006 Chevy Trail Blazer last with 190000 miles on it?
No way of knowing without a service record and even then it would be a guess.
Where is the ac vacuum hose in 2003 trail blazer?
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Does the 2001 trail blazer have the same transmission as the 1992 Chevrolet pickup?
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