How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Kenny Your Own Question
Kenny, BMW Technician
Category: BMW
Satisfied Customers: 1120
Experience:  BMW Master Certifed level 1 Technican
Type Your BMW Question Here...
Kenny is online now
A new question is answered every 9 seconds

2002 Bmw 745li vin: dr06299 I can hear almost like chain

Customer Question

2002 Bmw 745li vin: dr06299 I can hear almost like chain chattering coming from bank 1. It sounds like either the cam moving around or a loose chain. I know there's an upper tensioner on bank 2 but I don't see one for bank 1. Is there any other tensioner
a I can remove and inspect ?
Submitted: 2 years ago.
Category: BMW
Expert:  Kenny replied 2 years ago.
I suspect the plastic guides have worn out and allowing the chain to slap around. Only one tensioner. To partial inspect the guides you will need to remove the valve covers and the oil pan, Once you do that you will need to remove the front timing case cover to check the reset of the system
Customer: replied 2 years ago.
I did some research seems like there is one more tensioner next to the vacuum pump. I'm going to check it before i do anything.