toyota yaris 2002 knocking noise coming from the head not from the crank shaft

2002 TOYOTA YARIS
37,000 MILES • 4 CYL • FWD • MANUAL
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WAJIH_MALIK
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  • 8 POSTS
i have a 2002 toyota yaris its engine making knocking noise comming from the caim shaft not from the crank side and the acceleration is not so good there is no pick up and efficency in engine i will change oxygene sensor also but it is fine some one tell me the timing is very advance in ideal speed theres no voice after i puch the gas pedal the knocking noise begain can u tell me the problem plzzzzz
May 29, 2011 at 6:00 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Drivetrain area-upper end-Check valves/lifters and camshaft/bearing-describe the noise you're hearing-ticking/tapping?????
May 29, 2011 at 9:31 AM
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WAJIH_MALIK
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  • 8 POSTS
can u tell me the exact timing mark of caim shaft
May 29, 2011 at 10:11 AM
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