clattering engine
Thread Starter
Instructor
Joined: Oct 2006
Posts: 108
Likes: 0
From: greeley pa.
clattering engine
Hi crew,dropped oil& filter today,put in shell rotella 15w-40.started up and got bad clatter on top end.pulled rocker covers checked for stuck lifter,all tight.immediately dropped oil,put in my usual pennzoil 10-30.noise is less but still very noticeable.I'm hoping I didn't wipe a lobe or bearing on cam.oil pressure is lower than usual.drove a short distance,power is still strong.Any ideas folks.....
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Hi crew,dropped oil& filter today,put in shell rotella 15w-40.started up and got bad clatter on top end.pulled rocker covers checked for stuck lifter,all tight.immediately dropped oil,put in my usual pennzoil 10-30.noise is less but still very noticeable.I'm hoping I didn't wipe a lobe or bearing on cam.oil pressure is lower than usual.drove a short distance,power is still strong.Any ideas folks.....
Does it still clatter even after a cruise and the engine is hot?
Usually when you do an oil change the bearings and lifters all still have a coating of oil so they're not bone dry.
With the engine running, try to determine where exactly the noise if coming from. Maybe a particular side, top, bottom, front, back...
Racer
Joined: Feb 2008
Posts: 497
Likes: 0
From: Streator Illinois
Terry
Intermediate
Joined: Dec 2007
Posts: 27
Likes: 0
From: Lancaster PA
Happened to me once, carbon chunk off the valve stem got in the cylinder and knocked for a few minutes then broke up and the sound went away. This was after a few start ups and shut downs when it never warmed up (just moving the car in and out of the garage, doing work to the garage) Guess the fuel soaked the carbon then the peice broke off. Sounded real bad, I got that chill inside then the noise went away.
