Question about 1998 Dodge Neon

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Loud knocking or tapping sound when engine is cold

When i start the car in the morning i could hear a loud knocking sound for about two minutes, then it would disappear and the car would run perfect. i could hear the sound coming from #1 and #2 spark plug under valve cover. i took it to a mechanic he said try to change oil, so i did synthetic oil. the noise is still there and it is very loud in the morning.
could this be valves,piston slap, or fuel pump etc. my mechanic would not even open the valve cover or check for other causes.he said just change the oil. my car is a 1999 neon dodge SOHC 2.0L 4-cylinder automatic. would this hurt my car if i dont get it fix?


davy b.

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  • Anonymous Mar 29, 2009

    i have a 2004 sx2.0, the knocking you are hearing is a piston...or pistons slapping and the motor is about to let go, had my motor replaced and no more noises...good luck

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Take our oil pan off from under your car and there should be 4 to 5 covers over a rod bearing. wiggle each one of them and find out which one is loose. take that cover off of the one that is wiggling and get the rod bearing out. order a new one from auto zone and replace it. The knocking in your motor can end up where you will need a whole new motor. so get it done before its to late.

Posted on Jul 22, 2009

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  • Dodge Master
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THIS NOISE IS PISTON SLAP..MOST NEONS HAVE THIS NOISE..HAVE SEEN THEM LAST FOR A LONG TIME..AS LONG AS IT GOES AWAY,IT SHOULD BE FINE

Posted on May 23, 2009

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