2002 Pontiac Grand Prix Mechanic Learning Bought 3800 Family Member Car Been

2002 PONTIAC GRAND PRIX
111,300 MILES
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GTUCKER
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  • 1 POST
I am not a mechanic. Learning as I go. I bought a 2002 Pontiac Grand Prix 3800 from a family member. The car has been sitting for about a year. He thought it was a blown head gasket. I changed the intake plenum valve gasket,valve cover gaskets,and the radiater. The sludge in valve covers were bad but i seen wors. It blocked the holes good. Cleaned that up. Changed oil. Drove good for five days. I changed the Map sensor to get check engine light off,which it did. Then almost immediately I heard a ticking knock. Sounds like it is coming from valve cover. It does not stop. Goes faster with speed. What should I do?clean oil pan and pick up
Jan 17, 2013 at 6:11 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
the knocking may be a bad lifter or maybe a bearing in the lower end.

try changing the oil again to see what happens

Roy
Jan 17, 2013 at 10:41 AM
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