Nate2497
Junior Member
Hey guys I'm new here and I need a little help. This post maybe long so forgive me in advance. I have a 2014 BigHorn 5.7L and it is making a sporadic tapping noise. I took it to my mechanic and without opening up the engine he can't seem to find where it is coming from. He didn't want to open it up and if it is nothing there and have me spend unnecessary money. Here's some of the details:
Don't hear it above 2000 rpm
With insp cover off seems louder at bell housing
Inspected starter drive torque converter bolts (x6)
no visible cracks in flywheel where it bolts to crankshaft
Oil is new
Still hear it with belt drive off
Timing chain wear not excessive though
Rotated engine w/pull handle could not duplicate noise
Tapping sound is not like a lifter or rocker arm nor like a rod bearing or piston/ wrist pin
It sounds like a pen tapping on a kitchen table but with no rhythm. My mechanic has 40 years in the game so I trust him. Any advice is well appreciated
Don't hear it above 2000 rpm
With insp cover off seems louder at bell housing
Inspected starter drive torque converter bolts (x6)
no visible cracks in flywheel where it bolts to crankshaft
Oil is new
Still hear it with belt drive off
Timing chain wear not excessive though
Rotated engine w/pull handle could not duplicate noise
Tapping sound is not like a lifter or rocker arm nor like a rod bearing or piston/ wrist pin
It sounds like a pen tapping on a kitchen table but with no rhythm. My mechanic has 40 years in the game so I trust him. Any advice is well appreciated