Woah! Loud bang from left side!!!
I firmly believe no question is a dumb one...please bare with me.
We just got our first diesel bus. We are super excited, but they taught us zero! So, my question is....after it starts up, there is a loud bang on the drivers side towards the rear. Despite the Tupperware bin of manuals my Hubbs is scouring for the answer....I thought I'd ask if anyone else has experienced it, or has a clue what it is. It has happened twice now. We start the vehicle, wait for the alarms for the....I dunno air?, then about 2 mins late - POW! Sounds like a backfire.
Help please! And thank you in advanced!