Jefflaws
Detonation wont cause any rod noise, and he hasnt "blown the engine or thrown a rod" yet, its just making some noise. The detonation will burn the top of a piston down, exposing ring lands, and maybe cause head or valve damage most of the time.
Most detonation occurs when the timming is over advanced, or fuel is run with an octane rating that is lower than specified. A gasoline octane rating is that blend's ability to resist combustion without an ignition source. If your engine is running hot or lean, running lower than 93 octane....that engine is doomed.
How was it improperly tuned? If i put on a 4# pulley and chip burned for 91 Octane and the 4# pulley (plus better plugs) how would i know if it's tuned properly or not? Just curious because my '01 is bone stock until the mods come in a couple weeks. A blown motor just scares me!
update
The tech. ask if I had a chip and I said yes.Now the story has changed.I'll take the truck in on Thurs. so the tech. can check it more closely.It's funny that dealer sales the chip I installed,but no matter I'll find out then.They may not warranty.Be worned!
they sell the chip
if the dealer sells the chip, and they chose not to warrenty the motor.....the odds of that holding up in court are slim to none. Total conflict of interest. It is your understanding the the dealership is there to support you......why would you be under the impression that a part they sell you for your truck will damage it......right........right......
The tech. ask if I had a chip and I said yes.Now the story has changed.I'll take the truck in on Thurs. so the tech. can check it more closely.It's funny that dealer sales the chip I installed,but no matter I'll find out then.They may not warranty.Be worned!
in the interest of helping rick out, lets please let this post and the other one pertaining to this one quickly get pushed off the first page, meaning lets not keep posting on these 2 threads
If he bought the chip from the dealership and then went and installed a 4# pulley without their knowledge, you're right, this could get very interesting. 
Add a another notch to the "if you're going to play, you'd better be ready to pay" post.

Add a another notch to the "if you're going to play, you'd better be ready to pay" post.


