Announcement

Collapse
No announcement yet.

Engine knocking sounds

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Engine knocking sounds

    Ok, so my car sat for about 9mo's while i was at college. The oil was all gone when i got back, and put some more in, took about 4.5 qts :shock:

    Anyway, the engine now makes a bad knocking sound when run. What could this be? How can I check? Thanks!!
    Tags: None
    #2
    Someone drained your oil, then drove the car.

    You have a spun bearing, most likely a rod bearing.

    Time for a new engine, or to rebuild yours.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

    Vapor Honing & E30 ABS Pump Refurbishment Service
    https://mtechniqueabs.com/

    Comment

      #3
      Ok thanks, just a little update.

      Now that the oil has gotten through the system, it idles fine, sounds ok, it only has the knocking/rattling on acceleration at around 2k rps.

      About the spun bearing. How much does a rebuilt on an m20 run? compared to how much for a new engine? Thanks

      Comment

        #4
        new engine is $4600 from the dealer plus $2100 labor to install it. a rebuild shouldnt cost more than $1000

        Comment

        Previous template Next
        Working...
        X