Driver's side engine knocking noise

Tiny
BILBO_MCFAGGINS
  • MEMBER
  • 2003 FORD F-150
  • 4.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 131,960 MILES
Knocking sound coming from valve cover driver side used my stethoscope to locate it. Crisp burning smell. Oil turns to black pretty quick. Thins out but no coolant and oil mixing! Freaking out! Changed the spark plugs did an oil change and did not help. Oil pressure has lowered from wheres it is usually at. Which is 3/4 of the way up now it is down to 1/2 or a little below one problem no dipstick. My engine size is a 4.2l 256ci.
Sunday, August 27th, 2017 AT 9:27 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
It sounds like you have spun a rod bearing which would cause all of the symptoms you have described above.

Can you make a video and send us a link so we can confirm the problem?

Please let us know what happens.

Cheers, Ken
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Wednesday, August 30th, 2017 AT 11:05 AM

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