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  1. #1 Re: trannyman can u help 
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    i checked dealership they changed upper intake gasket and put in platinum plugs at 95000 could them plugs be bad already?platinum i think
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  2. #2 Re: trannyman can u help 
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    They likely changed the gasket because it was causing a vacuum leak which can make the engine run lean and also give the problems you had if it was a bad leak but typically you have a lean condition code to go along with it. If it had the original spark plugs with 95K miles then they were way past due. Often most vehicle manufactures rate the ignition components to go to 100K miles but that is often way past due so your spark plugs were probably very worn and also causing misfire.
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  3. #3 Re: trannyman can u help 
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    so if they was changed at 95000 and its 130000 start out by changing plugs by the way thanks for all your expertise and knowledge
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  4. #4 Re: trannyman can u help 
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    I'm stuck now. I had a MAF, & misfire on #5 code. I changed the MAF, & changed the spark plugs. I had no codes for about 5 minutes. My SES light start blicking. Putting #5 misfire code back. So I then change my wires and replace the #5 plug again. Ok for about 5 minutes again then again does same thing. I then go and change my coil pack for the #5 plug.
    Still putting the same code in.
    My car runs good except when it is sitting in park. you can then hear the mis in the engine and the SES light keeps blinking until you take it out of park.
    where should I go next?
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  5. #5 Re: trannyman can u help 
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    You could possibly have a bad coil that is arcing internally or you could have a clogged injector that is causing that cylinder to run a bit lean. Did you check the condition of the coil terminals to the spark plug wires when you replaced them? It is very common to see rust or corrosion here and it can definately cause a misfire. An easy way to check out the injectors is to go around to each one with a stethoscope and listen to the sound they make. I have an injector pulse tool that is purpose meant to check the spray pattern and output of the fuel injectors but is not something that is too easy to come across and requires removing the fuel rail from the car. A compression test will also verify that the cylinder is mechanically sound or at least is close to the other 5 if it is then you are left with fuel and spark.
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