How to change spark plugs 2004 hyundai XG350 - 2002 Hyundai XG350

SOURCE: how to change spark plugs on hyundai 2004 2.4L

Remove the plastic cover that goes over the engine (the one with the Hyundai logo).
At this point, you will see the cables that goe to each fo the spark plugs.
Noting their position, remove them.
The spark plugs are ready to be removed, turn counterclockwise and replace with manufacturer recomended ones.

Greg Bernett

• 2993 Answers
• Posted on Feb 10, 2010

SOURCE: I need 2004 Hyundai XG350L Service/repair Manual

3.5L Engine

Remove or disconnect the following:

1. Negative battery cable
   

• Engine coolant
  
• Water pump pulley bolts
  
• Alternator bolt, loosen only
  
• Water pump pulley and drive belts
  
• Crankshaft pulley
  
• Timing belt cover(s)
  

1. Turn the crankshaft until the timing marks on the camshaft sprocket and cylinder head are aligned.
   
2. Loosen the timing belt tensioner bolt and turn the tensioner counterclockwise as far as it will go. Tighten the adjusting bolt.
   
3. Mark the timing belt with an arrow showing direction of rotation.
   
4. Remove the timing belt.
   
5. If defective, remove the timing belt tensioner.
   

1. If necessary, install the timing belt tensioner.
   
2. Attach the top of the tensioner spring on the engine coolant pump pin. Ensure the hook on the pin is facing down and the hook on the tensioner is facing away from the engine
   
3. Rotate the timing belt tensioner to the extreme counterclockwise position. Temporarily lock the tensioner in place.
   
4. Align the timing marks of the camshaft and crankshaft sprockets.
   
5. Install the timing belt on the crankshaft sprocket, then onto the rear camshaft sprocket.
   
6. Route the belt to the coolant pump pulley, the front camshaft sprocket and the timing belt tensioner.
   
7. Apply force counterclockwise to the rear camshaft sprocket with tension on the tight side of the belt and check that timing marks are aligned.
   
8. Loosen the tensioner bolt 1–2 turns and tighten the timing belt to a tension of 57–84 lbs. (260–380 N).
   
9. Turn the crankshaft two turns clockwise.
   
10. Readjust the sprocket timing marks and tighten the tensioner bolts.
    
11. Install the timing belt covers.
    
12. Install the crankshaft pulley and tighten to 108–116 ft. lbs. (150–160 Nm).
    
13. Install or connect the following:
    
    • Timing belt cover(s)
      
    • Crankshaft pulley
      
    • A/C compressor belt
      
    • Water pump pulley
      
    • V belt
      
    • Negative battery cable
      
    • Engine with coolant
      

SOURCE: My 2002 Hyundai XG350 has

if i can help you, i have the same problem and i discovered that my CATALYTIC CONVERTER was blocked and the two pre-cat too !
First i think it's was the throttle body but no ! After checking every electronics parts,a friend of mine takeout the first oxygen sensor on the line of the exaust and i see a difference
We clean (take out) the interior of all catalytic on the exaust line and replace all parts after, the oxygen sensor too !
i try it on the road for a week,and that's it,we have resolved the problem. Wow ! at last
I bought the new pre-cat and the catalytic converter and i got a new car.
It took two months before we found the probleme. I read on the web different solution but no one
have the good one.
Sorry for my english,i hope you understand what I have write(What I explained)

SOURCE: I JUST CHANGED THE FUEL FILTER IN MY 2004 HYUNDAI

make sure you installed the filter correctly the is normally " in " and " out " marks on it., installed wrong and fuel cannot flow..