[Rocky Chiquera]

Hi.
Our 6-year old (Canada) DW is suddenly noisy (roughly grumbling) from the motor/pump area.

1) How to distinguish whether it's, eg. motor bearings, foreign objects in the impellers etc?

2) Is it worth figuring it out myself or impossible?

3) Should I call a repairman or just purchase another?

4) Does this Maytag model MDB4 have this problem regularly?

Thanks in advance!

Rocky in Vancouver