MY CAR IS TAPPING OR KNOCKING

2005 PONTIAC GRAND PRIX
115,750 MILES • 6 CYL • 2WD • AUTOMATIC
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#82JY2002
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when my car is on and running while in park it be tapping or knocking could you tell me what you think it is my dad said it might be a lifter in the motor but hes not sure.
Jan 25, 2011 at 8:03 PM
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RASMATAZ
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If the noise is coming from the upper end of the engine -could be the lifters, might want to open it up and investigate
Jan 25, 2011 at 8:07 PM
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#82JY2002
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DO THEY HAVE ANYTHING I CAN BUY TO STOP THE TAPPING OR KNOCKING R MAKE THE LIFTER STOP STICKING
Jan 25, 2011 at 8:20 PM
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RASMATAZ
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You can try engine flush and Seafoam on it and see what happens, and also check the oil pressure -
Jan 25, 2011 at 8:32 PM
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#82JY2002
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so do i just pour those items in the engine and what about lucas do u think its good to use and will they stop my car from tapping and knocking and stop making the lifter stop sticking
Jan 25, 2011 at 8:38 PM